1. An apparatus for manufacturing an evaluation reference tape, comprising:
at least one light source for emitting at least one of a laser beam in a visible region and a laser beam in an ultraviolet region;
an optical system which allows the laser beam emitted from said at least one light source to be incident on a predetermined processing position;
a transportation device for transporting a magnetic tape having a base layer and a magnetic recording layer formed on one of both surfaces of said base layer in a longitudinal direction with said magnetic recording layer facing upstream of a light path of said laser beam while it is held in registry with said predetermined processing position; and
a device for securing flatness of the magnetic tape when it is transported by said transportation device while it is held in registry with said predetermined processing position.
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 multi-stage, variable reluctance device comprising:
(a) a shaft having an axis of rotation;
(b) a plurality of spaced stages disposed about said axis of rotation; each of said plurality of spaced stages having an equal number of stator and rotor poles defining stator and rotor pole pairs, symmetrically disposed about said axis of rotation, and having an airspace therebetween;
(c) means for energizing all stator poles of one of said plurality of stages at the same time for a selected time interval, and
(d) means for sequentially and repeatedly energizing all stator poles of the other of said plurality of stages,
where each stator and rotor pole pair in a stage has substantially the same physical, magnetic and electrical characteristic.
2. A multi-stage, variable reluctance device as claimed in claim 1 wherein the stator and rotor poles are housed in a casing.
3. A multi-stage, variable reluctance device as claimed in claim 1 wherein adjacent rotor poles on adjacent stages are offset from each other.
4. A multi-stage, variable reluctance device as claimed in claim 1 wherein each rotor pole in a stage is skewed in relation to each other.
5. A multi-stage, variable reluctance device as claimed in claim 1 wherein said device is a motor.
6. A multi-stage, variable reluctance device as claimed in claim 1 wherein stators on adjacent stages are offset from each other.
7. A multi-stage, variable reluctance device as described in claim 1 wherein said device is a generator.
8. A multi-stage variable reluctance device as described in claim 1 wherein each stator of a stage is skewed in relation to each other.
9. A multi-stage variable reluctance device as claimed in claim 5 further comprising internal bearings operable to support a casing.
10. A multi-stage, variable reluctance device as described in claim 9 wherein the casing is operable to support the stator stages.
11. A multi-stage, variable reluctance device as claimed in claim 1 further comprising a cooling system.
12. A multi-stage, variable reluctance device as claimed in claim 1 further comprising:
(a) a cooling shroud affixed to the outer periphery of the casing;
(b) external cooling fins mounted on the casing but beneath the shroud defining a plurality of internal spaces; and
(c) a fan operable to circulate air into the internal spaces.
13. A multi-stage, variable reluctance device as described in claim 11 further comprising:
(a) a liquid cooling agent;
(b) a casing with a plurality of internal cooling passages running along the outer periphery of the case operable to transport the liquid cooling agent;
(c) a liquid recirculation pump; and
(d) an air to liquid heat exchanger;
(e) an inline thermostat operable to regulate temperature.
14. A multi-stage, variable reluctance device as described in claim 13 further comprising:
(a) a plurality of spray nozzles operable to inject the liquid coolant; and
(b) a sump operable to collect the liquid coolant.
15. A multi-stage variable reluctance device as claimed in claim 1 having at least two electric conductors for engaging said stator poles.
16. A method for enabling the selective production of multi-stage variable reluctance motorgenerators having a plurality of spaced stages about an axis of rotation, where each stage has an equal number of stator and rotor poles, defining stator and rotor pole pairs symmetrically disposed about the axis of rotation and having an air space therebetween, comprising:
(a) selecting a single stator and rotor pair for each stage,
(b) determining for said single stator and rotor pair criteria selected from the group of physical, magnetic and electrical characteristics for said single stator and rotor pair in such stage, and
(c) producing all of said stator and rotor poles in such stage from said criteria from said single stator and rotor pair.
17. A method as claimed in claim 16 wherein said group comprises the diameter of a rotor, stator winding ampere turns, volume of airgap, length of rotor poles, length of stator poles, angular displacement of said stator and rotor pole pairs, thickness of stator back iron, depth of rotor root, and diameter of shaft.
18. A system for optimizing physical, magnetic and electrical characteristics of a multi-stage variable reluctance motorgenerator having a plurality of spaced stages about an axis of rotation where each stage has an equal number of stator and rotor pairs defining stator and rotor pole pairs symmetrically disposed about said axis of rotation, and having an airspace there between comprising:
(a) storing in memory a representation of a single stator and rotor pair for each stage;
(b) computing for said single stator and rotor pair criteria selected from the group of physical, magnetic and electrical characteristics for said single stator and rotor pair; and
(c) determining all of the stator and rotor poles in said stage from said computing step.
19. A system as claimed in claim 18 wherein said physical characteristics are selected from the group of the diameter of the rotor, stator winding ampere turns, volume of airgap, length of rotor poles, length of stator poles, angular displacement of said stator and rotor pole pairs, thickness of stator back iron, depth of rotor root and diameter of shaft.
20. A system as claimed in claim 18 wherein said magnetic and electrical characteristics comprise magnetic flux forces and current generated when varying amounts of electrical energy are applied to stator windings.
21. A multi-stage variable reluctance device as claimed in claim 1 wherein said means for energizing comprises applying electrical energy to stator pole windings in either parallel or series.