Electric brake device
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United States of America Patent
Stats
-
Feb 21, 2017
Grant Date -
Jan 22, 2015
app pub date -
Jul 9, 2014
filing date -
Jul 16, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is provided a brake system for vehicles, the brake system including: a slave cylinder S/C to generate a hydraulic pressure by an electric motor according to a braking operation by a driver; and a controller to decrease an operation amount of the slave cylinder S/C when an operation amount of the electric motor is maintained, then increase an operation amount of the slave cylinder S/C when a change occurs in an operation amount of the electric motor subsequently. The controller determines whether or not the phase currents Iu, Iv, Iw of the electric motor are in two-phase continuously energized state and the state remains for a certain time or longer. When the determination conditions are satisfied, the controller performs commutation control to generate commutation in the electric motor by reducing a target hydraulic pressure of the slave cylinder S/C.
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