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1. (WO2018052068) ELECTRIC BRAKE APPARATUS

Pub. No.:    WO/2018/052068    International Application No.:    PCT/JP2017/033219
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Sep 15 01:59:59 CEST 2017
IPC: B60T 17/22
B60T 8/171
B60T 8/172
B60T 13/74
Applicants: NTN CORPORATION
NTN株式会社
Inventors: MASUDA, Yui
増田 唯
Title: ELECTRIC BRAKE APPARATUS
Abstract:
Provided is an electric brake apparatus capable of enhancing the redundancy when an abnormality has occurred in a predetermined sensor and further enhancing the control accuracy. A control device (2) controls an electric motor (4) on the basis of a sensor abnormality detecting means (20) for determining whether a pressing force sensor (Sb) is normal or abnormal, and on the basis of an estimated sensor output estimated by use of an output from an angle sensor (Sa) or a current sensor (23) when the pressing force sensor (Sb) is determined to be abnormal. When the pressing force sensor (Sb) is normal and a vehicle is stopped, an estimated sensor output of the pressing force sensor (Sb) is estimated by use of an output from the angle sensor (Sa) or the current sensor (23), irrespective of the operation condition of a brake operation means (24), so that the electric motor (4) is controlled. The estimated sensor output of the pressing force sensor (Sb) estimated by sensor substitution control is compared with an actual sensor output from the pressing force sensor (Sb) so that the accuracy of the sensor substitution control is checked.