Title:
直流モータ駆動ブリッジ回路の故障検知装置
Document Type and Number:
Japanese Patent JP4508542
Kind Code:
B2
Abstract:
In a direct-current motor drive bridge circuit structured such that a pair of forward rotation switching elements and a pair of reverse rotation switching elements are alternately connected annularly, a direct-current motor is interposed between diagonal node points in one side, and a power source voltage is applied to a portion between diagonal node points in another side via an existing resistance. A fault detection apparatus of the direct-current motor drive bridge circuit is provided with a fault detection means for detecting an electric potential of the one node point r to which the power source voltage is applied via the existing resistance and for detecting a closed-circuit fault of the switching elements and on the basis of a fluctuation of the electric potential.
Inventors:
Susumu Kitagawa
Yu Negishi
Takahiro Kasuga
Takuya Narasaki
Yu Negishi
Takahiro Kasuga
Takuya Narasaki
Application Number:
JP2003084926A
Publication Date:
July 21, 2010
Filing Date:
March 26, 2003
Export Citation:
Assignee:
Showa Corporation
International Classes:
H02P7/29; B62D5/04; H02P29/00
Domestic Patent References:
| JP8084494A |
Attorney, Agent or Firm:
Nozomi Gangwon
Nakamura Kun
Nakamura Kun