System for controlling positions of epb caliper and cable by using driving current and ripple

Abstract

The present invention relates to a system for controlling the positions of a caliper and a cable of an electric parking brake (EPB). According to an embodiment of the present invention, a system for controlling the positions of a caliper and a cable of an EPB comprises: an actuator driving motor used for engaging and disengaging a parking brake of an EPB system; an electronic control module for controlling the motor; and a vehicle battery for supplying power to the motor and the electronic control module, wherein the electronic control module includes a ripple measuring unit for measuring theripple of the motor by receiving an output signal of the motor and a current measuring unit for measuring a change in the driving current of the motor.

Description

technical field [0001] The invention relates to a system for position control of a caliper and a cable of an EPB (Electric Parking Brake). Background technique [0002] The parking brake of the car is to play the effect of braking the rear wheels or front wheels of the car in order to maintain the state after the car is parked / parked. Generally, in the case of parking brakes, when the driver pulls the brake lever, force is applied to the parking cable, and the applied force is equally distributed to the brake mechanism mounted on the wheel through an equalizer. Mode The brake mechanism restrains the wheels and prevents the vehicle from moving in a manner not intended by the user. [0003] In the parking brake, the electric parking brake (EPB, Electric Parking Brake) is used as a braking system instead of a mechanical handle lever (side brake, side brake) or a foot pedal (foot pedal), and can be easily used The button operation and motor power realize the parking brake. In...

AI Technical Summary

Problems solved by technology

However, although the above-mentioned situation can improve the reliability of the product, it causes a problem that not only the material cost is higher, but also the structure of the EPB module is added, which makes the structure more complicated, which in turn increases the burden on the mechanism design.

[0010] Furthermore, according to the EPB caliper position control device with a complex structure as in the prior art, as the EPB continues to be used, it may be stuck due to subtle position changes, overheating and burning of the motor, penetration of foreign matter inside the driver, or wear. Phenomena, etc., so there is also the danger that the motor or driver cannot be driven smoothly

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