Patent ID: 9669809
Date: 2017-06-06
CPC Classifications: B60T,Y10S

Claim:
1. A brake control device for a vehicle, the brake control device comprising: a brake actuator for applying braking forces to wheels of the vehicle; a brake operation member operated by a driver of the vehicle; and at least two same-type brake operation sensors which are the same in type, each of the same-type brake operation sensors being configured to detect, as a detection value, a value which changes in response to an operation amount of the brake operation member, the brake control device comprising an electronic control unit for calculating a target value used for a control of the brake actuator and controlling the brake actuator in accordance with the target value, wherein the electronic control unit is programmed: to determine whether or not each of the same-type brake operation sensors is a normal-state sensor; to set, as an invalid-state sensor, the same-type brake operation sensor not determined as the normal-state sensor; to hold, as a last value in association with the invalid-state sensor, one of the detection value detected by the invalid-state sensor immediately before the same-type brake operation sensor is set as the invalid-state sensor and the target value calculated immediately before the same-type brake operation sensor is set as the invalid-state sensor; to fix, as an abnormal-state sensor, the invalid-state sensor when the same-type brake operation sensor has continued to be set as the invalid-state sensor for a predetermined sensor abnormal-state fixing time or more; to calculate the target value by using the latest detection value detected by the normal-state sensor when one of the same-type brake operation sensors is set as the invalid-state sensor and the other same-type brake operation sensor is determined as the normal-state sensor; to calculate the target value by using the last value held in association with the invalid-state sensor when either of the same-type brake operation sensors are determined to be not the normal-state sensor and at least one of the same-type brake operation sensors is set as the invalid-state sensor; and to execute an abnormal-state-associated process when either of the same-type brake operation sensors have continued to be determined to be not the normal-state sensor for an abnormal-state process determination time or more.