Title:
BRAKE DRIVE CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/159720
Kind Code:
A1
Abstract:
Provided is a brake drive control circuit that can control an electromagnetic brake stably against power source voltage variations and that can suppress the generation of heat in the electromagnetic brake. This brake drive control circuit which controls an electromagnetic brake that releases a brake by energization, includes: a monitoring means for monitoring a voltage or a current supplied to a circuit block that comprises the electromagnetic brake and a switch element provided in series with the electromagnetic brake; and a calculation means for generating, based on the results of monitoring by the monitoring means, a brake control signal, which is a PWM signal, such that the operating voltage or the operating current for the electromagnetic brake reaches a preset value for releasing the electromagnetic brake. Conduction in the switch element is PWM-controlled by the brake control signal.
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| WO/2000/045403 | SYSTEM FOR CONTROL OF AN ELECTROMAGNETIC ACTUATOR |
Inventors:
ODAGIRI HIDEYUKI (JP)
Application Number:
PCT/JP2019/003620
Publication Date:
August 22, 2019
Filing Date:
February 01, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H01F7/18; B25J19/00; H02P15/00
Foreign References:
| JP2010000226A | 2010-01-07 | |||
| JPH06200963A | 1994-07-19 | |||
| JP2008131759A | 2008-06-05 | |||
| JP2004156873A | 2004-06-03 |
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