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Patent Searching and Data


Title:
ELECTRIC PARKING BRAKE DEVICE AND ELECTRIC PARKING BRAKE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/149315
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an electric parking brake device and an electric parking brake control method capable of accelerating data measurement, suppressing influence of load fluctuation during idling, and achieving an appropriate clamping force. In order to achieve the purpose, the present invention comprises a disc rotor 2, brake pads 5a and 5b, which press the disc rotor 2, an electric motor 8, which imparts thrust to the brake pads 5a and 5b, a current detection unit 31, which detects a motor current 43 of the electric motor 8, and a brake control device 11, which controls the electric motor 8 on the basis of the motor current 43. The brake control device 11 controls the electric motor 8 on the basis of a current change amount from a time corresponding to a peak current of the motor current 43 to a predetermined time.

Inventors:
SETO SHINJI (JP)
ARITOMI SHUNSUKE (JP)
KAI RYU (JP)
NISHINO KIMIO (JP)
KOJIMA DAISUKE (JP)
Application Number:
PCT/JP2020/039675
Publication Date:
July 29, 2021
Filing Date:
October 22, 2020
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60T13/74; B60T8/17; H02P29/00
Foreign References:
JP2018118524A2018-08-02
JP2015121203A2015-07-02
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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