Transient compensation voltage estimation for feedforward sinusoidal brushless motor control

• US 20040095089A1
• Filed: 11/19/2002
• Published: 05/20/2004
• Est. Priority Date: 11/19/2002
• Status: Active Grant

• Current Assignee: GM Global Technology Operations Incorporated (General Motors Company), Steering Solutions IP Holding Corporation (Nexteer Automotive Group Ltd.)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Collier-Hallman, Steven James
• Granted Patent: US 7,157,878 B2
• Time in Patent Office: Days
• US Class Current: 318/567
• CPC Class Codes: B62D 5/046 Controlling the motor
• CPC Class Codes: G05B 2219/42063 Position and speed and current and force, moment, torque
• CPC Class Codes: H02P 6/15 Controlling commutation time
• CPC Class Codes: H02P 6/16 Circuit arrangements for detecting position

Abstract

A method for controlling a voltage mode controlled electric machine comprising: receiving a torque value representative of a desired torque; obtaining a speed value indicative of a rotational velocity of the electric machine; acquiring a phase advance value indicative of a desired phase advance angle; generating a voltage command responsive to the torque value, the position value; the generating is responsive to the torque value, the speed value, and the phase advance value.

Claims

8. A system for controlling a voltage mode controlled electric machine comprising:

a PM electric machine;

a sensor operably connected to said electric machine and configured to measure at least one of a rotor velocity and a rotor position of said electric machine and transmit at least one of a velocity signal and a position signal;

a controller, said controller operably connected to said electric machine and said sensor, said controller receives said at least one of a velocity signal and a position signal and generates a voltage command for said electric machine; and

wherein said voltage command is responsive to said at least one of a velocity signal and a position signal, a desired torque value and a phase advance value.

9. The system of claim 8 wherein said controller computes a speed value responsive to said position signal.

10. The system of claim 8 wherein said voltage command is responsive to a closed loop non-linear implementation of an implicit equation.

11. The system of claim 10 wherein said implicit equation comprises:

12. The system of claim 8 wherein said voltage command is responsive to frequency responsive dynamic terms implemented as filters.

13. The system of claim 8 further including a temperature sensor in operable communication with said controller and transmitting a temperature signal.

14. The system of claim 13 wherein said voltage command is responsive to said temperature signal.

15. The system of claim 14 wherein said voltage command is responsive to a scheduled a motor parameter as a function of said temperature signal.

16. A storage medium encoded with a machine-readable computer program code, said computer program code including instructions for causing controller to implement a method for controlling a voltage mode controlled electric machine comprising:

receiving a torque value representative of a desired torque;

obtaining a speed value indicative of a rotational velocity of said electric machine;

acquiring a phase advance value indicative of a desired phase advance angle;

generating a voltage command responsive to said torque value, said position value;

said generating is responsive to said torque value, said speed value, and said phase advance value.

17. A computer data signal, said data signal comprising code configured to cause a controller to implement a method for controlling a voltage mode controlled electric machine comprising:

receiving a torque value representative of a desired torque;

obtaining a speed value indicative of a rotational velocity of said electric machine;

acquiring a phase advance value indicative of a desired phase advance angle;

generating a voltage command responsive to said torque value, said position value;

said generating is responsive to said torque value, said speed value, and said phase advance value.