1. A controller for controlling a power stage of a power converter according to a control law, the control law implementing a specific type of compensator and being pre-designed to generate an optimal response of a default power converter for a default parameter value of a component of the power stage; the controller being further configured to alter the control law for an actual parameter value of the component of the power stage such that the optimal response is retained.
2. The controller according to claim 1, wherein the control law is defined by poles and zeros; and the controller is configured to alter the control law by shifting the poles such that a relationship between the poles and zeros of the default power converter and the power converter is maintained.
3. The controller according to claim 1, wherein the control law is defined by poles and zeros; and the controller is configured to alter the control law by shifting the zeros such that a relationship between the poles and zeros of the default power converter and the power converter is maintained.
4. The controller according to claim 1, wherein the type of compensator is any of P, PI or PID; and the controller is configured to alter the control law by adjusting a proportional gain according to a ratio of the actual parameter value and the default parameter value by multiplying a default proportional gain corresponding to the default parameter value by the ratio.
5. The controller according to claim 1, wherein the type of compensator is any of I, PI or PID, and the controller is configured to alter the control law by
adjusting an integral gain according to a ratio between the actual parameter value and the default parameter value by multiplying a default integral gain corresponding to the default parameter value by a square root of the ratio.
6. The controller according to claim 1, wherein the type of compensator is any of D, ID or PID, and the controller is configured to alter the control law by
adjusting a differential gain according to a ratio between the actual parameter value and the default parameter value by multiplying a default differential gain corresponding to the default parameter value by the ratio.
7. The controller according to claim 1, wherein the component comprises a capacitor, and the default parameter value and the actual parameter value comprise a capacitance.
8. The controller according to claim 1, further configured to alter the control law by selecting another type of compensator of a plurality of types of compensators and by altering the control law implementing the another type of compensator for an actual parameter value of the component of the power converter such that an optimal response of the another type of compensator corresponding to the default power converter is retained.
9. The controller according to claim 8, further configured to optimize for a type of compensator of the plurality of types of compensators and the corresponding control law.
10. The controller according to claim 1, comprising a first set of control law coefficients being selected when a steady state is detected, and a second set of control law coefficients being selected when a load transient is detected.
11. A power converter comprising a controller according to claim 1, and a communication bus for providing a select signal to the controller according to which the controller selects the type of compensator from a plurality of types of compensators.
12. The power converter according to claim 11, further comprising a non-volatile memory for storing the plurality of types of compensators.
13. A method for controlling a power stage of a power converter according to a control law, the control law implementing a specific type of compensator, the method comprising:
providing the control law being pre-designed to generate an optimal response of a default power converter for a default parameter value of a component of the power stage;
determining an actual parameter value of the component of the stage; and
altering the control law for the actual parameter value of the component of the power stage such that the optimal response is retained.
14. The method according to claim 13, wherein altering the control law comprises
selecting another type of compensator of a plurality of types of compensators and
altering the control law implementing the another type of compensator for an actual parameter value of the component of the power stage such that an optimal response of the another type of compensator is retained.
15. The method according to claim 14, further comprising:
optimizing for a type of compensator of the plurality of types of compensators and the corresponding control law.
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 closure comprising:
a first section comprising a bore, said bore comprising an opening at one end, said opening having a peripheral dimension smaller than a peripheral dimension of an inner portion of said bore; and
a second section comprising a pin, said pin being at least partly deformable, wherein
said first section is mountable on a first surface,
said second section is mountable on a second surface opposite said first section,
said pin is insertable through each of said second surface and said first surface, and into said inner portion of said bore, and
said pin being at least partly deformable within said inner portion of said bore thereby to expand to have a peripheral dimension larger than said peripheral dimension of said opening of said bore whereby said second section is locked to said first section.
2. (canceled)
3. The closure of claim 1, wherein said bore is integrally formed with said first section.
4. (canceled)
5. The closure of claim 1, wherein said pin is integrally formed with said second section
6. The closure of claim 1, wherein an inner surface of said bore defines a frustum, said frustum having a smaller diameter end oriented in a direction of said opening of said bore.
7. The closure of claim 1, wherein at least a portion of said pin is tubular.
8. The closure of claim 7, wherein said deformable portion of said pin is tubular.
9. The closure of claim 1, wherein said bore includes a bottom surface thereof, said bottom surface comprising a protrusion having a narrowing dimension towards said opening of said bore.
10. The closure of claim 9, wherein said protrusion is at least one of a cone shape, a spherical shape, and a wedge shape.
11. The closure of claim 1, wherein said bore is substantially cylindrical.
12. The closure of claim 1, wherein one of said first and second sections comprises one of a central recess in and a central protrusion from an outer surface thereof
13. The closure of claim 1, wherein at least one of said first and second sections further comprises an ornamental portion along an outer surface thereof.
14. The closure of claim 1, wherein at least one of said first and second sections further comprises at least one spike, said at least one spike restricting movement of said at least one of said first and second sections relative to the other.
15. The closure of claim 14, wherein said first section comprises said at least one spike and said at least one spike is located at least one of adjacent to said bore and adjacent to a periphery of said first section.
16. The closure of claim 8, wherein said second section further comprises a channel extending therethrough and communicating with an interior of the tubular deformable portion of the pin.
17. The closure of claim 1, wherein said pin comprises an enlarged portion having a dimension larger than said dimension of said opening of said bore and wherein said enlarged portion is inserted past said opening prior to deformation of said pin.
18. A magnetic snap assembly for releasably connecting a first sheet material to a second sheet material, the assembly comprising:
an ornamental cap having a bore, the bore comprising an opening and an inner portion having a peripheral dimension larger than the peripheral dimension of the opening;
a second section having a pin, the pin including a deformable portion;
a first permanent magnet; and
a surface magnetically attracted to said first permanent magnet, said deformable portion of said pin extending through one of said first permanent magnet and said magnetically attracted surface and extending through the first sheet material and into said inner portion of said bore, such that when said pin is deformed each of said second section, one of said first permanent magnet and magnetically attracted surface, the first sheet material and said first section are locked together, the other of said first permanent magnet and magnetically attracted surface being attached to the other of the first sheet material and the second sheet material, the first permanent magnet and the magnetically attracted surface being magnetically engaged to releasably connect the first sheet material with the second sheet material.
19. The magnetic snap assembly of claim 18, in which said first permanent magnet is locked together with each of said second section, the first sheet material and said first section.
20. The magnetic snap assembly of claim 18, in which one of said first permanent magnet and said magnetically attracted surface comprises a projection, the other of said first permanent magnet and said magnetically attracted surface having an opening adapted to receive said projection.
21. A snap assembly for releasably connecting a first sheet material to a second sheet material, the assembly comprising:
an ornamental cap having a bore, the bore comprising an opening and an inner portion having a peripheral dimension larger than the peripheral dimension of the opening;
a second section having a pin, the pin including a deformable portion;
a female component; and
a male component, said deformable portion of said pin extending through one of said male and female components and extending through the first sheet material and into said inner portion of said bore, such that when said pin is deformed each of said second section, one of said male and female components, the first sheet material and said first section are locked together, the other of said male and female components being attached to the other of the first sheet material and the second sheet material, the male and female components being releasably engaged to connect the first sheet material with the second sheet material.
22. The snap assembly of claim 21, in which said female component is substantially socket-shaped and said male component is substantially ball-shaped.
23-26. (canceled)