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CONTROLLER FOR DRIVING A MOTOR AND ELECTRIC POWER-ASSISTED VEHICLE

  • US 20140084819A1
  • Filed: 08/21/2013
  • Published: 03/27/2014
  • Est. Priority Date: 09/24/2012
  • Status: Active Grant
First Claim
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1. A controller for driving a motor, comprising:

  • an input part that receives, from each of two brake sensors, a signal indicating that a corresponding brake is in an ON state or a signal indicating that the brake is in an OFF state;

    a control coefficient computing part computing a control coefficient that determines a value of a control parameter that controls the motor relative to a target value of the control parameter, the target value being a value of the control parameter at which the motor achieves a desired power generation efficiency, the control coefficient computing part increasing the control coefficient along a first slope when a first signal indicating that only one of the brakes is in the ON state is received from the input part, the control coefficient computing part increasing the control coefficient along a second slope when a second signal indicating that both of the brakes are in the ON state is received from the input part, the second slope rising faster than the first slope; and

    a control part that derives a value of the control parameter in accordance with the target value of the control parameter and the control coefficient computed by the control coefficient computing part, the control part forwarding the derived value of the control parameter to the motor to control driving of the motor.

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