Author: claimsbot

We claim:

1. A multi-stage method for compensating frequency response of a DMM, wherein the DMM comprises a plurality of channels, wherein each one of one or more of the plurality of channels comprises one or more channel modes, the method comprising:
characterizing each one of the one or more of the plurality of channels;
designing a digital filter, wherein said designing the digital filter comprises calculating filter coefficients for each one of the one or more of the plurality of channels; and
compensating frequency response of each one of the one or more of the plurality of channels using the digital filter.
2. The multi-stage method of claim 1,
wherein each channel mode can be characterized by one or more of a voltage range and a coupling mode.
3. The multi-stage method of claim 2,
wherein the coupling mode comprises one of AC coupling and DC coupling.
4. The multi-stage method of claim 2,
wherein the voltage range comprises one of a plurality of voltage ranges.
5. The multi-stage method of claim 1,
wherein said compensating the frequency response of the DMM comprises calibrating each one of the one or more of the plurality of channels using the filter coefficients.
6. The multi-stage method of claim 1,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels comprises achieving a desired gain across a desired frequency range.
7. The multi-stage method of claim 6,
wherein the desired frequency range comprises a pass band frequency for each one of the one or more of the plurality of channels.
8. The multi-stage method of claim 6,
wherein the desired gain comprises unity gain for each one of the one or more of the plurality of channels.
9. The multi-stage method of claim 1,
wherein the digital filter comprises one or more of the following:
a FIR filter; and
an IIR filter.
10. The multi-stage method of claim 1,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels comprises minimizing noise in a stop band frequency for each one of the one or more of the plurality of channels.
11. The multi-stage method of claim 1,
wherein said characterizing each one of the one or more of the plurality of channels comprises obtaining an actual response for each one of the one or more of the plurality of channels.
12. The multi-stage method of claim 11, further comprising:
generating a desired filter response for each of the one or more modes for each one of the one or more channels of the plurality of channels;
wherein the desired filter response is substantially equal to the inverse of the actual response.
13. The multi-stage method of claim 12, further comprising:
calculating the filter coefficients by using the desired filter response.
14. The multi-stage method of claim 13,
wherein said calculating the filter coefficients comprises using one or more of an Equal-Ripple filter design, Parks filter design, and least-squares filter design.
15. The multi-stage method of claim 11,
wherein said obtaining the actual response comprises providing a reference signal to each one of the one or more of the plurality of channels and measuring a corresponding channel response of each one of the one or more of the plurality of channels to the reference signal.
16. The multi-stage method of claim 15,
wherein the correction factor is operable to generate the actual response of the first channel at the second mode without providing a reference signal to the first channel at the second mode, wherein the actual response of the first channel at the first mode and the second mode are both generated at the first frequency.
17. The multi-stage method of claim 15,
wherein the actual response of each one of the one or more of the plurality of channels is substantially equal to the reference signal provided to each one of the one or more of the plurality of channels divided by the corresponding channel response of each one of the one or more of the plurality of channels.
18. The multi-stage method of claim 15,
wherein the reference signal is provided by one or more of:
an external calibration unit; and
a built-in calibration unit.
19. The multi-stage method of claim 11,
wherein said characterizing the frequency response further comprises generating a correction factor, wherein the correction factor relates an actual response of a first channel at a first mode to an actual response of the first channel at a second mode, both at a first frequency.
20. The multi-stage method of claim 19,
generating a plurality of correction factors for one or more DMM’s;
wherein the plurality of correction factors for corresponding one or more of the plurality of channels at corresponding one or more modes on the one or more DMM’s may be averaged together.
21. The multi-stage method of claim 19, further comprising:
generating an array of correction factors;
wherein the array of correction factors is operable to relate the actual response of one or more modes of each one of the one or more of the plurality of channels to each other at one or more frequencies.
22. The multi-stage method of claim 21,
wherein the array of correction factors is operable to generate the actual channel response for each one of the one or more of the plurality of channels at the one or more modes.
23. The multi-stage method of claim 11,
wherein the actual response of each one of the one or more of the plurality of channels is operable to show any non-linearity in the frequency response of each one of the one or more of the plurality of channels.
24. The multi-stage method of claim 11,
wherein each one of the one or more of the plurality of channels comprises an input and an output;
wherein said characterizing each one of the one or more of the plurality of channels comprises providing a reference signal to the input of each one of the one or more of the plurality of channels in order to generate the actual response, wherein the reference signal comprises a set of predefined frequencies and amplitudes; and
wherein a channel response is generated at the output of each one of the one or more of the plurality of channels.
25. The multi-stage method of claim 24, wherein the reference signal comprises one or more of:
a stepped sinusoidal sweep;
a stepped square wave sweep; and
any other type of a periodic signal.
26. The multi-stage method of claim 24, wherein the reference signal comprises one or more of:
a single step; and
any other type of a non-periodic signal.
27. The multi-stage method of claim 1, further comprising:
calibrating the DMM;
wherein said calibrating the DMM further comprises using the filter coefficients and measuring accuracy of each one of the one or more of the plurality of channels.
28. The multi-stage method of claim 27,
wherein the DMM comprises one or more memory devices;
wherein said using calibration coefficients comprises writing calibration coefficients to the one or more memory devices.
29. The multi-stage method of claim 27,
wherein the one or more memory devices comprise one or more of:
one or more EEPROMs;
one or more flash memory devices; and
one or more of any other type of a non-volatile memory device.
30. The multi-stage method of claim 27,
wherein said calibrating the DMM comprises testing the one or more memory devices.
31. The multi-stage method of claim 1, further comprising:
verifying the frequency response of each one of the one or more of the plurality of channels, wherein said verifying the frequency response comprises using the filter coefficients.
32. A method to calibrate frequency response of a measuring device, wherein the measuring device comprises a plurality of channels, wherein each one of the plurality of channels comprises one or more modes, the method comprising:
implementing a digital filter using filter coefficients; and
calibrating each one of the one or more of the plurality of channels using the digital filter.
33. The method of claim 32,
wherein the method is usable in a manufacturing calibration procedure for a plurality of measuring devices.
34. The method of claim 32,
wherein the measuring device comprises one or more of:
a digital multi-meter;
a digital volt-meter; and
any measuring instrument operable to couple to a computer system.
35. The method of claim 34,
wherein said coupling to the computer system comprises using one or more of:
any computer bus comprising an ISA bus, a PCI bus, a PXI bus, a VXI bus, a PCMCIA bus, a MicroDAQ bus, a PC104 bus, and a PC104 bus; and
any network bus comprising Ethernet, USB, IEEE-1394, GPIB, RS-232, RS-485, CAN, and DeviceNet.
36. The method of claim 32,
wherein each channel mode can be characterized by one or more of a voltage range and a coupling mode.
37. The method of claim 36,
wherein the coupling mode comprises one of AC coupling and DC coupling.
38. The method of claim 36,
wherein the voltage range comprises one of a plurality of voltage ranges.
39. The method of claim 32,
wherein said calibrating each one of the one or more of the plurality of channels comprises achieving a desired gain across a desired frequency range.
40. The method of claim 39,
wherein the desired frequency range comprises a pass band frequency for each one of the one or more of the plurality of channels.
41. The method of claim 39,
wherein the desired gain comprises unity gain for each one of the one or more of the plurality of channels.
42. The method of claim 32,
wherein the digital filter comprises one or more of the following:
a FIR filter; and
an IIR filter.
43. The method of claim 32, further comprising:
wherein said calibrating each one of the one or more of the plurality of channels comprises minimizing noise in a stop band frequency for each one of the one or more of the plurality of channels.
44. The method of claim 32, further comprising:
calibrating the measuring device;
wherein said calibrating the measuring device further comprises using the filter coefficients by the measuring device and measuring accuracy of each one of the one or more of the plurality of channels.
45. The method of claim 44,
wherein the DMM comprises one or more memory devices;
wherein said using calibration coefficients comprises writing calibration coefficients to the one or more memory devices.
46. The method of claim 45,
wherein the one or more memory devices comprise one or more of:
one or more EEPROMs;
one or more flash memory devices; and
one or more of any other type of a non-volatile memory device.
47. The method of claim 44,
wherein said calibrating the measuring device comprises testing the one or more memory devices.
48. The method of claim 42,
wherein each one of the one or more of the plurality of channels comprises an input and an output;
wherein the measuring device is operable to generate an actual response for each one of the one or more of the plurality of channels.
49. The method of claim 48,
wherein said generating the actual response comprises providing a reference signal to the input of one or more of the plurality of channels in order to generate the actual response, wherein the reference signal comprises a set of predefined frequencies and amplitudes; and
wherein a channel response is generated at the output of one or more of the plurality of channels.
50. The method of claim 49,
wherein the reference signal comprises one or more of:
a stepped sinusoidal sweep;
a stepped square wave sweep; and
any other type of a periodic signal.
51. The method of claim 49,
wherein the reference signal comprises one or more of:
a single step; and
any other type of a non-periodic signal.
52. The method of claim 50,
wherein the measurement device is operable to obtain one or more correction factors to generate an actual response for each one of the one or more of the plurality of channels.
53. The method of claim 52,
wherein the measurement device is further operable to generate desired filter response, wherein the desired filter response is substantially equal to the inverse of the actual response.
54. The method of claim 53,
wherein the measurement device is further operable to generate the filter coefficients from the desired filter response;
wherein said generating the filter coefficients comprises using one or more of an Equal-Ripple filter design, Parks filter design, and least-squares filter design.
55. A system for calibrating a measuring device, wherein the system comprises:
a measuring device, wherein the measuring device comprises:
a plurality of channels; and
a digital filter operable to use filter coefficients, wherein the digital filter is further operable to compensate frequency response of each one of one or more of the plurality of channels; and

a calibration unit, wherein the calibration unit is operable to generate a reference signal to one or more channels of the plurality of channels on the measuring device.
56. The system of claim 55,
wherein each one of one or more of the plurality of channels comprises one or more channel modes.
57. The system of claim 56,
wherein each channel mode can be characterized by one or more of a voltage range and a coupling mode.
58. The system of claim 57,
wherein the coupling mode comprises one of AC coupling and DC coupling.
59. The system of claim 57,
wherein the voltage range comprises one of a plurality of voltage ranges.
60. The system of claim 55,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels comprises achieving a desired gain across a desired frequency range.
61. The system of claim 60,
wherein the desired frequency range comprises a pass band frequency for each one of the one or more of the plurality of channels.
62. The system of claim 60,
wherein the desired gain comprises unity gain for each one of the one or more of the plurality of channels.
63. The system of claim 55,
wherein each one of the one or more of the plurality of channels comprises an input and an output;
wherein the measuring device is operable to generate an actual response for each one of the one or more of the plurality of channels.
64. The system of claim 63,
wherein said generating the actual response comprises providing a reference signal to the input of one or more of the plurality of channels in order to generate the actual response, wherein the reference signal comprises a set of predefined frequencies and amplitudes; and
wherein a channel response is generated at the output of one or more of the plurality of channels.
65. The system of claim 64,
wherein the reference signal comprises one or more of:
a stepped sinusoidal sweep;
a stepped square wave sweep; and
any other type of a periodic signal.
66. The system of claim 64,
wherein the reference signal comprises one or more of:
a single step; and
any other type of a non-periodic signal.
67. The system of claim 64,
wherein the measurement device is operable to obtain one or more correction factors to generate an actual response for each one of the one or more of the plurality of channels.
68. The system of claim 64,
wherein the measurement device is further operable to generate desired filter response, wherein the desired filter response is substantially equal to the inverse of the actual response.
69. The system of claim 68,
wherein the measurement device is further operable to generate the filter coefficients from the desired filter response;
wherein said generating the filter coefficients comprises using one or more of an Equal-Ripple filter design, Parks filter design, and least-squares filter design.
70. The system of claim 55,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels further comprises minimizing noise in a stop band frequency for the each one of the one or more of the plurality of channels.
71. The system of claim 55,
wherein the digital filter comprises one or more of the following:
a FIR filter; and
an IIR filter.
72. The system of claim 55,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels further comprises using the digital filter for each one of the one or more of the plurality of channels and measuring accuracy of each one of the one or more of the plurality of channels.
73. The system of claim 55,
wherein the measuring device further comprises one or more memory devices;
wherein said calibrating comprises writing filter coefficients to the one or more meamory devices.
74. The system of claim 73,
wherein the one or more memory devices comprise one or more of:
one or more EEPROMs;
one or more flash memory devices; and
one or more of any other type of a non-volatile memory device.
75. The system of claim 73,
wherein said compensating the frequency response of each one of the one or more of the plurality of channels comprises testing the one or more memory devices.
76. The system of claim 55,
wherein the system is usable in a manufacturing calibration procedure for a plurality of measuring devices.
77. The system of claim 55,
wherein the measuring device comprises one or more of:
a digital multi-meter;
a digital volt-meter; and
any measuring instrument operable to couple to a computer system.
78. The system of claim 77,
wherein said coupling to the computer system comprises using one or more of:
any computer bus comprising an ISA bus, a PCI bus, a PXI bus, a VXI bus, a PCMCIA bus, a MicroDAQ bus, a PC104 bus, and a PC104 bus; and
any network bus comprising Ethernet, USB, IEEE-1394, GPIB, RS-232, RS-485, CAN, and DeviceNet.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A method for obtaining a reading of a sequence of components in a polymer molecule, the method comprising:
providing a pipette having a longitudinal axis and having a tapered region and having a pore with a selected pore diameter in a range of 1-40 nanometers (nm);
providing a selected liquid in contact with an interior surface of the pore;
impressing a selected voltage difference across the selected liquid within the pipette pore substantially parallel to the pipette longitudinal axis direction, and providing an ionic current value induced in the selected liquid;
passing a polymer molecule, having a sequence of two or more polymer components, through the pore, and determining a change in the ionic current signal induced by passage of each of the polymer components through the pore;
comparing each of the sequence of changes in ionic current signals with each of N reference ionic current change signals (N\u22672), with each reference ionic current change signal corresponding to a reference polymer component drawn from a reference group of polymer components; and
for at least one of the determined changes in ionic current signals for one of the polymer components, identifying the polymer component with the reference polymer component whose reference ionic current change signal is closest to the at least one determined ionic current change signal.
2. The method of claim 1, further comprising providing a self-assembling monolayer of a selected substance on a selected portion of said interior surface of said pore.
3. The method of claim 2, further comprising choosing said self-assembling monolayer to include at least one of: (i) octadecyltrichlorosilane on glass and (ii) (16-Mercapto)hexadecanoic acid on a gold substrate.
4. The method of claim 1, further comprising choosing said polymer sequence to be a nucleic acid sequence including the bases adenine, cytosine and guanine and at least one of the bases thymine and uracil.
5. The method of claim 1, further comprising selecting material for said pipette from a group of materials including quartz glass, aluminosilicate glass and borosilicate glass.
6. The method of claim 1, further comprising choosing said selected liquid to include at least one of an alkali halide, an ammonium compound, an ionic organic compound and an ionic inorganic compound.
7. The method of claim 1, further comprising providing a selected second liquid in contact with a portion of a surface of said pipette not including said interior surface of said pore.
8. The method of claim 7, further comprising choosing said second liquid to be substantially the same as said selected first liquid.
9. The method of claim 7, further comprising choosing said second liquid to be different from said selected first liquid.
10. The method of claim 1, wherein said process of identifying said polymer component with said reference polymer component whose reference ionic current signal is closest to said at least one determined ionic current signal comprises:
(i) measuring a value CIC(tm;meas) of said determined ionic current change signal at each of a sequence of times t=tm (m=1, . . . , M;M\u22671);
(ii) forming an error value, defined as
(
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between said determined ionic current change signal value and a corresponding reference ionic current change signal value, for each of N reference ionic current change signals CIC(tm;+\u03c4(n);ref;n), numbered n=1, . . . , N(N\u22672), where {wm}m is a set of selected non-negative weight values, \u03c4(n) is a selected time shift value and p is a selected positive number; and
(iii) when at least one reference ionic current signal, numbered n\u2032, satisfies \u03b5(n\u2032)\u2266\u03b5(thr), where \u03b5(thr) is a selected threshold value, identifying at least one reference polymer component, number n\u2033, with said polymer component, where \u03b5(n\u2033)=min1\u2266n\u2266N\u03b5(n).
11. The method of claim 1, further comprising passing said polymer sequence through said tapered tip of said pipette at an average rate in a range of 10-1000 polymer components per millisecond.
12. The method of claim 1, further comprising selecting said voltage difference from a group of time-dependent differences including a difference that (i) is substantially uniform in time; (ii) increases substantially monotonically with time; (iii) decreases substantially monotonically with time; (iv) is substantially a step function in time; (v) varies substantially sinusoidally with time; and (vi) varies substantially trapezoidally with time.
13. A method for obtaining a reading of a sequence of components in a polymer molecule, the method comprising:
providing a pipette having a longitudinal axis and having a tapered region and having a pore with a selected pore diameter in a range of 1-40 nanometers (nm), where a self-assembling monolayer of a selected substance is provided on an interior surface of the pore;
providing a selected liquid in contact with an interior surface of the pore;
impressing a selected voltage difference across the selected liquid within the pipette pore transverse to the pipette longitudinal axis direction, and providing an electronic current value induced in the selected liquid;
passing a polymer molecule, having a sequence of two or more polymer components, through the pore, and determining a change in the electronic current signal induced by passage of each of the polymer components through the pore
comparing each of the sequence of changes in electronic current signals with each of N reference electronic current change signals (N\u22672), with each reference electronic current change signal corresponding to a reference polymer component drawn from a reference group of polymer components; and
for at least one of the determined changes in electronic current signals for one of the polymer components, identifying the polymer component with the reference polymer component whose reference electronic current change signal is closest to the at least one determined electronic current change signal.
14. The method of claim 13, wherein where a self-assembling monolayer of a selected substance is provided on a selected portion of said interior surface of said pore.
15. The method of claim 14, further comprising choosing said self-assembling monolayer to include at least one of: (i) octadecyltrichlorosilane on glass and (ii) (16-Mercapto)hexadecanoic acid on a gold substrate.
16. The method of claim 13, further comprising choosing said polymer sequence to be a nucleic acid sequence including the bases adenine, cytosine and guanine and at least one of the bases thymine and uracil.
17. The method of claim 13, further comprising selecting material for said pipette from a group of materials including quartz glass, aluminosilicate glass and borosilicate glass.
18. The method of claim 13, further comprising choosing said selected liquid to include at least one of an alkali halide, an alkaline halide, a nitrate and a sulfate.
19. The method of claim 13, further comprising providing a selected second liquid in contact with a portion of a surface of said pipette not including said interior surface of said pore.
20. The method of claim 19, further comprising choosing said second liquid to be substantially the same as said selected first liquid.
21. The method of claim 19, further comprising choosing said second liquid to be different from said selected first liquid.
22. The method of claim 13, wherein said process of identifying said polymer component with said reference polymer component whose reference electronic current change signal is closest to said at least one determined electronic current signal comprises:
(i) measuring a value CEC(tm;meas) of said determined electronic current change signal at each of a sequence of times t=tm, (m=1, . . . , M;M\u22671);
(ii) forming an error value, defined as
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=
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1

M

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between said determined electronic current change signal value and a corresponding reference electronic current change signal value, for each of N reference electronic current change signals CEC(tm;+\u03c4(n);ref;n), numbered n=1, . . . , N(N\u22672), where {wm}m is a set of selected non-negative weight values, \u03c4(n) is a selected time shift value and p is a selected positive number; and
(iii) when at least one reference ionic current change signal, numbered n\u2032, satisfies \u03b5(n\u2032)\u2266\u03b5(thr), where \u03b5(thr) is a selected threshold value, identifying at least one reference polymer component, number n\u2033, with said polymer component, where \u03b5(n\u2033)=min1\u2266n\u2266N\u03b5(n).
23. The method of claim 13, further comprising passing said polymer sequence through said tapered tip of said pipette at an average rate in a range of 10-1000 polymer components per millisecond.
24. The method of claim 13, further comprising selecting said voltage difference from a group of time-dependent differences including a difference that (i) is substantially uniform in time; (ii) increases substantially monotonically with time; (iii) decreases substantially monotonically with time; (iv) is substantially a step function in time; (v) varies substantially sinusoidally with time; and (vi) varies substantially trapezoidally with time.

1. A system of a plurality of series-connected converter devices for a fuel cell apparatus, the system comprising:
a fuel cell apparatus controller electrically connected to the fuel cell apparatus;
the plurality of converter devices electrically connected to an output end of the fuel cell apparatus and an output end of the fuel cell apparatus controller and configured to convert electricity generated by the fuel cell apparatus and output the converted electricity;
a series connection unit electrically connected to each said converter device and configured to deliver electrical energy to a load;
a Mux control unit electrically connected to the series connection unit and configured to read an amount of electricity output by the series connection unit;
a power control unit electrically connected to the load and configured to calculate an amount of electricity required by the load; and
a master controller electrically connected to the Mux control unit, the power control unit, and each said converter device.
2. The system of claim 1, wherein each said converter device comprises:
a converter electrically connected to the output end of the fuel cell apparatus;
a bi-directional converter electrically connected to the converter;
a battery electrically connected to the bi-directional converter; and
a sub-controller electrically connected to the converter, the battery, and the fuel cell apparatus controller and controlled by the master controller so as to control operation of the converter and the bi-directional converter.
3. The system of claim 2, wherein the master controller determines which of the converter devices need to be turned on, based on signals from the Mux control unit and the power control unit, and transmits a control signal to each said sub-controller.
4. A method for controlling the system of claim 1, comprising:
a step of estimating a load, wherein a load power value and a load output voltage value required by the load are calculated;
a step of determining the number of said converter devices to be turned on, wherein the number of said converter devices that need to be turned on is determined according to the load power value or the load output voltage value, and the converter devices selected are defined as working converter devices;
a step of calculating an output power, wherein a required output power assigned to and to be provided by each said working converter device is calculated;
a step of discharging, wherein when the fuel cell apparatus has an available output power above 0 but lower than the required output power, a battery in each said working converter device works in conjunction with the fuel cell apparatus to provide the required output power, and when the available output power of the fuel cell apparatus is 0, the battery of each said working converter device provides the required output power; and
a step of charging, wherein when an amount of electricity of a said battery is smaller than a predetermined amount, and the available output power of the fuel cell apparatus is higher than the required output power, the fuel cell apparatus begins to charge the corresponding battery.
5. The method of claim 4, wherein the step of determining the number of said converter devices to be turned on comprises either dividing the load power value by a maximum output power, or dividing the load output voltage value by a maximum output voltage of each said converter device, so as to determine the number of said converter devices to be selected.
6. The method of claim 5, wherein the step of calculating an output power comprises dividing the load power value by the number of the working converter devices so as to obtain the required output power to be provided by each said working converter device.
7. The method of claim 6, wherein the working converter devices are connected in series by the series connection unit.
8. The method of claim 7, wherein the step of estimating a load comprises calculating, by the power control unit, the load power value and the load output voltage value required by the load.
9. The method of claim 8, wherein the step of determining the number of said converter devices to be turned on comprises controlling, by the master controller and according to the load power value or the load output voltage value, the working converter devices to be turned on.
10. The method of claim 9, wherein the step of calculating an output power comprises calculating, by the master controller, the required output power assigned to and to be provided by each said working converter device.
11. The method of claim 10, wherein the step of discharging comprises controlling a bi-directional converter of each said working converter device by a corresponding sub-controller so as to control discharging of the corresponding battery.
12. The method of claim 11, wherein the step of charging comprises controlling the bi-directional converters by the corresponding sub-controllers so as to control charging of the corresponding batteries.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1-22. (canceled)
23. A polyphase electric machine, comprising:
a stator, impinged by an electromagnetic rotating field, including a yoke having yoke teeth having at least partially peripheral slots, in which windings, which generate a magnetic field, are situated; and
a rotor, which is rotatable around an axis, having permanent magnets, which is peripherally separated from the stator by an air gap, the rotor fixedly connected to a pulley;
wherein the yoke teeth in the stator are assembled into modules, whose number is at least one of (a) equal to a number of current phases and (b) corresponds to an integral multiple thereof, each module including a number of at least one yoke tooth and directly neighboring yoke teeth of a module having opposing magnetic field polarity.
24. The polyphase electric machine according to claim 23, wherein a ratio of a pole pitch of the rotor to a slot pitch of the stator is 98.
25. The polyphase electric machine according to claim 23, wherein the magnetic field in the air gap is formed in the radial direction to the axis.
26. The polyphase electric machine according to claim 23, wherein the rotor is arranged as an external rotor.
27. The polyphase electric machine according to claim 23, wherein the stator has a peripheral recess, in which the windings including a core assembly and the permanent magnets including the rotor yoke of the rotor are arranged.
28. The polyphase electric machine according to claim 23, wherein the windings in directly neighboring yoke teeth of two modules are arranged in a same rotational direction.
29. The polyphase electric machine according to claim 23, wherein the yoke teeth have pole shoes, which at least partially close the slots lying between the yoke teeth on a side of the air gap.
30. The polyphase electric machine according to claim 23, wherein the yoke has yoke auxiliary teeth between two directly neighboring yoke teeth.
31. The polyphase electric machine according to claim 23, wherein a ratio of the pole pitch of the rotor to the slot pitch of the stator is one of: (a) 910; (b) 98; (c) 65; (d) 67; and (e) 34; each module including at least 3 yoke teeth at the pole pitch to slot pitch ratio of one of (a) 910; and (b) 98; at least two yoke teeth at the pole pitch to slot pitch ratio of one of (a) 65; and (b) 67; and at least one yoke tooth at the pole pitch to slot pitch ratio of 34.
32. The polyphase electric machine according to claim 31, wherein a winding arrangement:
a \u2212a \u2212a a a \u2212a b \u2212b \u2212b b b \u2212b c \u2212c \u2212c c c \u2212c

is provided at the pole pitch of the rotor to slot pitch of the stator ratio of 98 and a winding arrangement:
a \u2212a \u2212a a a \u2212a \u2212b b b \u2212b \u2212b b c \u2212c \u2212c c c \u2212c

is provided at the pole pitch of the rotor to the slot pitch of the stator ratio of 910;
wherein a, b, and c represent current phases of a three-phase current.
33. The polyphase electric machine according to claim 23, wherein the rotor has a recess to at least partially accommodate a bearing.
34. The polyphase electric machine according to claim 23, wherein the rotor has a recess for spacing apart the rotor from the yoke and the windings and a fastener of the yoke on the stator.
35. The polyphase electric machine according to claim 23, wherein the stator has a recess for spacing apart the stator from fasteners of the pulley on the rotor.
36. The polyphase electric machine according to claim 23, wherein the rotor is constructed from multiple identical rings.
37. The polyphase electric machine according to claim 23, wherein an encoder is situated on the polyphase electric machine.
38. The polyphase electric machine according to claim 23, wherein a projection is situated on a circular path concentric to the pulley, whose radius is larger than a radius of the pulley.
39. The polyphase electric machine according to claim 23, wherein the stator is at least partially enclosed by a motor housing and the rotor.
40. The polyphase electric machine according to claim 23, wherein a cover is situated on a motor housing.
41. The polyphase electric machine according to claim 23, wherein the polyphase electric machine is configured as a drive for at least one of (a) a freight elevator and (b) a passenger elevator.
42. The polyphase electric machine according to claim 23, wherein the polyphase electric machine is configured as at least one of (a) a cable drive and (b) a belt drive having at least one pulley.
43. The polyphase electric machine according to claim 23, wherein the polyphase electric machine is configured a drive for an escalator.
44. A device, comprising:
a polyphase electric machine including:
a stator, impinged by an electromagnetic rotating field, including a yoke having yoke teeth having at least partially peripheral slots, in which windings, which generate a magnetic field, are situated; and
a rotor, which is rotatable around an axis, having permanent magnets, which is peripherally separated from the stator by an air gap, the rotor fixedly connected to a pulley;

wherein the yoke teeth in the stator are assembled into modules, whose number is at least one of (a) equal to a number of current phases and (b) corresponds to an integral multiple thereof, each module including a number of at least one yoke tooth and directly neighboring yoke teeth of a module having opposing magnetic field polarity; and
wherein the device is arranged as at least one of (a) a passenger elevator; (b) a freight elevator; and (c) an escalator.
45. A method for at least one of (a) assembling and (b) disassembling a force transmission device in a polyphase electric machine including: a stator, impinged by an electromagnetic rotating field, including a yoke having yoke teeth having at least partially peripheral slots, in which windings, which generate a magnetic field, are situated; a rotor, which is rotatable around an axis, having permanent magnets, which is peripherally separated from the stator by an air gap, the rotor fixedly connected to a pulley; and a cover situated on a motor housing, the yoke teeth in the stator being assembled into modules, whose number is at least one of (a) equal to a number of current phases and (b) corresponds to an integral multiple thereof, each module including a number of at least one yoke tooth and directly neighboring yoke teeth of a module having opposing magnetic field polarity, comprising:
removing the cover;
at least one of (a) removing and (b) attaching the force transmission device; and
refastening the cover.
46. The method according to claim 45, wherein the force transmission device includes at least one of (a) a cable and (b) a belt.