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1. (WO2017033803) ELECTRIC BRAKE DEVICE

Pub. No.:    WO/2017/033803    International Application No.:    PCT/JP2016/073932
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 17 01:59:59 CEST 2016
IPC: B60T 13/74
B60T 8/17
F16D 65/18
F16D 66/00
F16D 121/24
Applicants: NTN CORPORATION
NTN株式会社
Inventors: MASUDA, Yui
増田 唯
Title: ELECTRIC BRAKE DEVICE
Abstract:
The purpose of the present invention is to provide an electric brake device that is capable of reducing operating noise and reducing power consumption. This electric brake device (DB) is provided with an electric brake actuator (1) and a control device (2). The control device (2) includes a brake control computer (18) that tracks and controls braking force to achieve a target braking force assigned by a host electronic control unit (ECU) (17), a brake maintenance current estimator (19) that maintains motor current at a constant value, and a switching control unit (20) that switches between the brake control computer (18) and the brake maintenance current estimator (19). When the conditions that the absolute value of the change rate of the target braking force is equal to or less than a specified value and the braking force is in a tracking state are satisfied, the switching control unit (20) switches from the brake control computer (18) to the brake maintenance current estimator (19), which maintains the motor current at a constant value.