×

MOTOR CONTROLLER AND ELECTRIC POWER STEERING APPARATUS

  • US 20080290829A1
  • Filed: 02/25/2008
  • Published: 11/27/2008
  • Est. Priority Date: 02/26/2007
  • Status: Active Grant
First Claim
Patent Images

1. A motor controller comprising:

  • a motor control signal output section that outputs a motor control signal; and

    a driver circuit that supplies a three phase drive power to a motor based on the motor control signal provided by the motor control signal output section, wherein the motor control signal output section includes;

    an electric current command value calculating section that calculates an electric current command value corresponding to a required torque to be generated by the motor;

    a motor control signal generating section that generates the motor control signal by performing a feedback control on an electric current in such a manner as to produce a motor electric current corresponding to the electric current command value obtained by the electric current command value calculating section; and

    an anomaly detecting section that detects a failed electric current flow in any one of phases of the motor,wherein, if the anomaly detecting section detects a failed electric current flow in any phase of the motor, the motor control signal output section generates, based on a phase other than the phase with the failed electric current flow, the motor control signal in such a manner that the motor electric current matches the required torque except for at a specific rotation angle corresponding to the phase with the failed electric current flow.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×