Title:
BRAKING FORCE CONTROLLER
Document Type and Number:
Japanese Patent JP3777525
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a braking force controller which can secure braking force properly even at fault of a controller or a motor driver.
SOLUTION: An normally open contact part 8a by the excitation of an exciting coil 8b and a converting circuit 9 are interposed in series between a stepping force sensor 6 and each motor driver 4. The converting circuit 9 converts the stepping force detected by the stepping force sensor 6 into command signals (torque command voltages VFL, VFR, VRL, and VRR for a left fore wheel, a right wheel, a left wheel, and a right abt wheel). The watch dog circuit of a controller 7 stops the current application to the exciting coil 8b in case that the controller 7 goes wrong. In case that the controller 7 has gone wrong, the contact 8a is closed, and the converting circuit 9 converts the detection result of the stepping force sensor 6 into a command signal, and outputs it to the motor driver 4 so the braking force can be secured by driving the motor 2 even at fault of the controller 7, and the reliability on a drive brake can be improved in its turn.
Inventors:
Yamaguchi Touma
Yoichi Kumemura
Atsushi Takano
Yoichi Kumemura
Atsushi Takano
Application Number:
JP25933197A
Publication Date:
May 24, 2006
Filing Date:
September 08, 1997
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B60T8/92; H02P7/00; H02P29/00; (IPC1-7): H02P7/00; B60T8/92
Domestic Patent References:
| JP61069396A | ||||
| JP4108058A | ||||
| JP2027976U |
Attorney, Agent or Firm:
Calyx
Toshio Nakamura
Miyazaki Yoshio
Toshio Nakamura
Miyazaki Yoshio
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