Motor control unit and electric power steering system

Motor control unit and electric power steering system

  • CN 102,957,374 A
  • Filed: 07/24/2012
  • Published: 03/06/2013
  • Est. Priority Date: 08/22/2011
  • Status: Active Application
First Claim
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1. control device of electric motor, this control device of electric motor possesses the Motor Control signal output unit of output motor control signal and supplies with the drive circuit of three-phase drive electric power based on described Motor Control signal to motor, described Motor Control signal output unit calculates the addition angle suitable with the motor anglec of rotation variable quantity of each execution cycle, export described Motor Control signal by carrying out Current Control in the rotating coordinate system of the motor anglec of rotation on abideing by the control that obtains by this addition angle of accumulative total, and possess that the target torque that will should produce based on described motor and the torque deviation between the actual torque are carried out the torque FEEDBACK CONTROL and the value that obtains as the 1st operational pattern of described addition angle with will infer value that angular velocity of rotation obtains the execution by the described torque FEEDBACK CONTROL value after revising as the 2nd operational pattern of described addition angle based on motor, it is characterized in thatDescribed Motor Control signal output unit changes the gain of described torque FEEDBACK CONTROL according to the operational pattern of described addition angle.

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