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Electronic Brake Control Method

A control method and brake technology, applied in the direction of brakes, brake transmission devices, vehicle sub-unit functions, etc., can solve problems such as increased resistance torque, difficulty in accurately controlling the gap between brake pads and brake discs, and difficulty in accurately grasping the rotational position of the motor. Achieve accurate gap control and save manufacturing costs

Active Publication Date: 2015-12-23
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in an electric brake (EMB) or an electronic parking brake (EPB) that does not have a force sensor, the drive current of the motor is measured nonlinearly, so it is difficult to accurately grasp the rotational position of the motor at which the braking force is "0". The problem
[0009] As mentioned above, if the rotational position of the motor at which the braking force is "0" cannot be accurately grasped, it is difficult to accurately control the gap between the brake pad and the brake disc, so there is a problem that the resistance torque increases with the contact between the brake pad and the brake disc

Method used

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Embodiment Construction

[0031] Referring to the accompanying drawings, a method for controlling an electronic brake according to an embodiment of the present invention will be described in detail below. In these steps, the thickness of lines and the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms described later are terms defined in consideration of functions in the present invention, and may vary depending on intentions of users, operators, etc., practices, and the like. Therefore, the definitions of these terms should be based on the overall content in this specification.

[0032] The electronic brake control method of the present invention can be applied to an electric brake (EMB) and an electronic parking brake (EPB) in the same manner.

[0033] First, refer to Figure 1 to Figure 3 , the case where the electronic brake control method of the present invention is applied to an electric brake (EMB) will be described.

[0...

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Abstract

The invention provides a control method of an electronic brake, which is characterized by the following steps: controlling a motor drive unit by a control unit and conducting pressurization in necessary sections as set in advance; conduction presumption of a reference position through the control unit based on a drive current and a rotary position of the motor as measured in the necessary sections; and controlling the motor drive unit and relieving braking force through the control unit based on the reference position. In accordance with the control method of the electronic brake, the rotary position of the motor with relieved braking force is speculated, so the clearance between a brake pad and a brake disc can be controlled accurately, minimization of a resisting moment can be realized, and a force sensor can be removed when the control method is used in the electronic brake and thus manufacture cost can be saved.

Description

technical field [0001] The present invention relates to a control method for an electronic brake, in particular to a control method for an electronic brake that controls the gap between a brake pad and a brake disc based on the driving current and rotational position of a motor measured in a pressurized section of the electronic brake . Background technique [0002] Recently, with the increasing popularity of hybrid vehicles and electric vehicles, the braking device is also developing from the original hydraulic brake to the electronic brake (Electronic Brake) that brakes with the drive of the motor. [0003] As such electronic brakes, there are electric brakes (Electro-Mechnical Brake: EMB) and electronic parking brakes (Electronic Parking Brake: EPB). In recent vehicles, electric brakes (EMB) tend to be added as main brakes. For use, install an electronic parking brake (EPB) as a parking brake. [0004] Both the electric brake (EMB) and the electronic parking brake (EPB)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/74
CPCB60T8/171B60T13/74B60Y2400/3012B60Y2400/3032B60Y2400/3084
Inventor 金钟圣
Owner HYUNDAI MOBIS CO LTD