Control method and apparatus of electronic parking brake system
A technology of electronic parking brake and control method, applied in the direction of braking action starting device, automatic starting device, brake, etc., which can solve the problems of high cost, reduced durability, increased cost, etc., to achieve improved durability and partly saved lines Effect
Active Publication Date: 2016-11-23
HYUNDAI MOBIS CO LTD
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Problems solved by technology
[0003] The EPB is composed of an electronically controlled electric actuator, a reducer or a torque (load) converter such as a screw, and an operating part that acts on the parking brake to generate braking force, while the drum brake (Drum In Hat, including 'DIH') EPB used as the basis of the parking brake, from the characteristics of the drum brake, the braking force is transferred from the braking force through the main brake to the braking force through the parking brake when the brake pedal is depressed In the process, the braking force for the purpose of parking brake operation decreases, resulting in a decrease in operating efficiency, and the demand for the parking brake system increases, resulting in a decrease in durability.
[0004] Therefore, in order to solve the problem of the braking force drop that occurs on the EPB that uses the drum brake as the basis of the parking brake, the load sensor is generally used to control the braking force, and the braking force is compensated in time when the braking force drops. The problem of increased cost due to relatively expensive load sensors
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[0030] A control method of an electronic parking brake system according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In this process, the line thicknesses and the sizes of members shown in the drawings are exaggerated for clarity and convenience in explanation.
[0031] The following terms are defined according to the functions in the present invention, and are slightly different from the user's or operator's intention or usage practice. Therefore, these terms must be defined based on the entire content of this specification.
[0032] figure 1 It is a block diagram of the electronic parking brake system control device according to an embodiment of the present invention.
[0033] Such as figure 1 As shown, the control device of the electronic parking brake system according to an embodiment of the present invention includes a service brake state detection unit 10 , a vehicle operation state detection unit 20 , a...
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A control method and apparatus of an electronic parking brake system is disclosed. In an embodiment, a control method of an electronic parking brake system comprises, determining by a control part whether a braking power transfer generation condition is satisfied, the braking power transfer generation condition being a condition that a braking power by a main brake is transferred to a braking power by a parking brake; determining whether a braking power transfer to the braking power by the parking brake is generated if the braking power transfer generation condition is satisfied; counting a lapsed time after the braking power transfer is generated if it is determined that the braking power transfer is generated; and generating an additional braking power to the parking brake according to the counted lapsed time.
Description
technical field [0001] The present invention relates to a control method and device for an electronic parking brake system, in particular to the braking force of the parking brake that occurs during the process of transferring the braking force from the braking force through the main brake to the braking force through the parking brake when the vehicle is braking. A control method and device for an electronic parking brake system for compensating for a decrease in braking force. Background technique [0002] A vehicle equipped with an electronic parking brake system (ELECTRONIC PARKING BRAKE, hereinafter referred to as EPB) is based on the driver's request, and after the operating conditions of the EPB are met, the EPB ECU that controls the EPB drives the EPB motor to generate a braking force through the EPB ( Target Clamping Force) to keep the vehicle at a standstill. [0003] The EPB is composed of an electronically controlled electric actuator, a reducer or a torque (loa...
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IPC IPC(8): B60T8/17B60T8/171
CPCB60T8/17B60T8/171B60T7/12B60T13/662B60T13/74B60T7/107B60T7/042B60T8/172B60T1/005
Inventor 全宰佑
Owner HYUNDAI MOBIS CO LTD