Electronic parking brake EPB system and method of controlling the same
AssigneeMando Corporation
InventorSu-Hwan No
Life of this patent
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Abstract
An electronic parking brake system and method for controlling an EPB system are disclosed. An EPB system including EPB actuator operated by a motor includes a motor driver which drives the motor of the EPB actuator; a current detector which detects a current flowing in the motor; and an electronic control unit (ECU) which drives the motor using the motor driver according to an operation mode, calculates an amount of current energy consumed by the motor using the current detected by the current detector while the motor is driving and a detecting time taken to detect the current, compares the calculated amount of current energy and a preset value, and controls an operation of the motor according to a result of the comparison.
Claims16
An electronic parking brake (EPB) system including an EPB actuator operated by a motor, the EPB system comprising:
- a motor driver which drives the motor of the EPB actuator;
- a current detector which detects a current flowing in the motor;
- and
- an electronic control unit (ECU) which drives the motor using the motor driver according to an operation mode, calculates an amount of current energy consumed by the motor using the current detected by the current detector while the motor is driving and a detecting time taken to detect the current, compares the calculated amount of current energy and a preset value, and controls an operation of the motor according to a result of the comparison,
- wherein the operation mode includes a parking operation mode, a parking release mode and a pad exchange mode, and the preset value is set differently depending on the operation mode.
A method of controlling an EPB system including an EPB actuator operated by a motor, the method comprising:
- driving the motor according to an operation mode;
- detecting a current flowing in the motor while the motor is being driven and a detecting time taken to detect the current;
- storing the detected current and the detecting time;
- calculating an amount of current energy consumed by the motor since start of a corresponding operation mode to a present point using the stored current and detecting time;
- and
- comparing the calculated amount of current energy and a preset value and determining whether the motor is overloaded,
- wherein the operation mode includes a parking operation mode, a parking release mode and a pad exchange mode, and the preset value is set differently depending on the operation mode.
Dependencies are inferred from the claim text.