Disclosed is an electronic parking brake system including a piston provided to press a pair of brake pads disposed on opposite sides of a brake disk rotating together with a wheel of a vehicle, a nut member provided to press the piston, a spindle member provided to move the nut member, an electric motor provided to rotate the spindle member, an H-bridge having a pair of high-side switching elements and a pair of low-side switching elements to rotate the electric motor in a forward or backward direction, and a controller electrically connected to the H-bridge, wherein the controller is configured to detect a back electromotive force of the electric motor in a motor lock inspection mode for inspecting a lock failure of the electric motor and determine the lock failure of the electric motor based on a change in the detected back electromotive force.
Electronic parking brake system and control method thereof
2025-02-25
Patent
Electronic Resource
English
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