Electromotive power steering system

Electromotive power steering system

  • CN 1,741,368 A
  • Filed: 02/28/2005
  • Published: 03/01/2006
  • Est. Priority Date: 08/27/2004
  • Status: Active Application
First Claim
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1. one kind is used for carrying out the electric motor driven power steering system that power-assisted turns to by the torque applications that motor is generated in steering mechanism, it is characterized in that:

  • D-q bid value setup unit, it is used to the electric current that will be applied to motor to determine d axle and q shaft current bid value in the d-q coordinate system;

    Current detector, it is used for detecting the three-phase AC electric current of motor actual flow;

    Three-phase AC/d-q coordinate converter, it is used for the detected three-phase AC of current detector electrorheological is changed into the d shaft current detected value and the q shaft current detected value of d-q coordinate system;

    Voltage controller, it is used for according to the d shaft current bid value of being determined by d-q bid value setup unit and q shaft current bid value and the voltage that is applied to motor according to d shaft current detected value and the control of q shaft current detected value from the output of three-phase AC/d-q coordinate converter;

    AndUnusual discriminating unit, it is used for differentiating by relatively q shaft current bid value and q shaft current detected value or by relatively d shaft current bid value and d shaft current detected value and occurs system'"'"'s control abnormity whether.

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