Patent ID: 8517476

Claim:
A brake controller that opens or closes a plurality of valves, which cause different noise when opened or closed and which are arranged in a circuit that supplies a hydraulic pressure to a wheel cylinder, so as to vary the hydraulic pressure, comprising: a vehicle state detecting portion that detects a state of a vehicle; an estimating portion that estimates a degree of influence of noise on the vehicle, generated in accordance with the variation in the hydraulic pressure, on the basis of the detected state of the vehicle; and a selecting portion that selects the valve to be opened or closed from among the plurality of valves on the basis of the estimated degree of influence of noise on the vehicle, wherein the vehicle state detecting portion includes a vehicle speed detecting portion that detects a vehicle speed, and the estimating portion estimates the degree of influence of noise on the vehicle on the basis of the detected vehicle speed, wherein the plurality of valves include a first valve and a second valve, wherein noise generated by opening or closing the second valve is smaller than that of the first valve, and the valve selected by the selecting portion is the second valve when the degree of influence of noise on the vehicle, estimated by the estimating portion, is larger than a predetermined reference value.