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Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP3805657
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide an electric power steering device in which a booster circuit is not broken even in the case where a motor becomes in the regeneration state.
SOLUTION: The booster circuit 100 is provided at a current feed circuit between a battery and a motor driving device and is provided with a coil L applied with a battery voltage; a transistor Q1 for earthing or releasing the coil L; a transistor Q2 connected to the other end side of the coil L and turning on/off; and a capacitor C2 connected to an output side of the transistor Q2 and leveling an output voltage by the coil L. A control device 20 boosts a feed voltage of the motor for alternately turning on/off the transistor Q1, Q2 at the time of operation of the transistor Q1 and the transistor Q2 based on a deviation of a target output voltage and the output voltage. At the time of regeneration, the transistors Q1, Q2 are alternately turned on/off.


Inventors:
鈴木 浩
酒井 厚夫
伊藤 和彦
Application Number:
JP2001283396A
Publication Date:
August 02, 2006
Filing Date:
September 18, 2001
Export Citation:
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Assignee:
株式会社ジェイテクト
International Classes:
B62D6/00; B62D5/04; H02J7/00; H02P3/18; B62D101/00; B62D119/00; (IPC1-7): B62D6/00; B62D5/04; H02J7/00; H02P3/18; //B62D101:00; B62D119:00
Domestic Patent References:
JP8127352A
JP64044377A
JP10304690A
JP9149685A
JP8127351A
JP1094064A
JP8127350A
Attorney, Agent or Firm:
恩田 博宣
恩田 誠