Title:
電動パワーステアリング装置
Document Type and Number:
Japanese Patent JP3989400
Kind Code:
B2
Abstract:
An elect power steering apparatus includes a motor drive circuit for PWM-driving an electric motor to generate a steering assist torque corresponding to a steering torque. The motor drive circuit includes a bridge circuit formed by a plurality of FETs, and a predrive circuit for driving FETs at a positive potential. Series connected first and second voltage step-up circuits for stepping up a line voltage at two stages are provided in front of the predrive circuit so that the FETs are driven by the predrive circuit with an output voltage from the second voltage step-up circuit supplied to the predrive circuit.
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Inventors:
Atsuhiko Yoneda
Yasuo Shimizu
Yasuo Shimizu
Application Number:
JP2003129427A
Publication Date:
October 10, 2007
Filing Date:
May 07, 2003
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
B62D6/00; B62D5/04; B62D101/00; B62D113/00; B62D119/00
Domestic Patent References:
| JP6298104A | ||||
| JP8084055A | ||||
| JP8266087A |
Attorney, Agent or Firm:
Yoichiro Shimoda
Tamiya Hiroshi
Tamiya Hiroshi