Title:
電動式パワーステアリング装置
Document Type and Number:
Japanese Patent JP3622362
Kind Code:
B2
Abstract:
A motor-assisted power steering apparatus includes a DC motor (2) which is fixed to a heat conductive frame (4), a torque sensor (19) for detecting torque of steering torque and a control circuit (3) for controlling current supplied to the motor (2). The control circuit (3) comprises a first unit disposed in a space defined by the frame (4) and the commutator (8) and a second unit disposed on an outside of the motor (2). The first unit includes a plurality of switching elements (18a-18d) connected to the motor (2) and a microcomputer (22) for setting motor current, a current detecting unit (24) for detecting current supplied to the motor (2), a current control unit (25) for providing duty ratio signals and a gate driving circuit (26) for driving the switching elements (18a-18d) according to the duty ratio signals.
Inventors:
Jiro Hayashi
Application Number:
JP24771596A
Publication Date:
February 23, 2005
Filing Date:
September 19, 1996
Export Citation:
Assignee:
株式会社デンソー
International Classes:
B62D5/04; H02K11/00; H02K11/04; B62D6/00; H02K23/66; (IPC1-7): B62D5/04; B62D6/00
Domestic Patent References:
| JP3176272A | ||||
| JP5209598A |
Attorney, Agent or Firm:
Kenji Ishiguro