| 摘要 |
<p>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).</p> |
