Title:
電気車のブレーキ制御装置
Document Type and Number:
Japanese Patent JP4642083
Kind Code:
B2
Abstract:
A brake control device for an electric vehicle suppresses excessive brake force or shortage of brake force. An electric-brake-force instruction controller (15) generates an electric-brake force instruction (14) to each motor. A comparison pattern generator (5) generates a release-notification-signal electric-brake-force comparison pattern (10) obtained by shifting a release-electric-brake-force comparison pattern (9) by a predetermined frequency to a side on which motor frequency increases. The release-electric-brake-force comparison pattern (9) changes over electric brake force to machine brake force while reducing electric brake force to zero at a closing speed of the electric brake. A comparator (7) outputs, as an electric-brake force pattern (11), a smaller signal selected from the electric-brake force instruction (14) and the release-electric-brake-force comparison pattern (9) to a motor controller (31). A comparator (8) outputs, as a release notification signal (4), a signal output at a timing when the release-notification-signal electric-brake-force comparison pattern (10) becomes equal to or smaller than the electric-brake force instruction (14) to a machine brake controller (2).
Inventors:
Ryotaro Harada
Application Number:
JP2007545475A
Publication Date:
March 02, 2011
Filing Date:
May 30, 2007
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
B60T8/17; B61H11/14
Domestic Patent References:
| JPH0314760A | 1991-01-23 | |||
| JPH1159400A | 1999-03-02 | |||
| JPH01233152A | 1989-09-18 | |||
| JPS639477A | 1988-01-16 |
Attorney, Agent or Firm:
Hiroaki Sakai