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Experimental method for appraising ABB controlling level by sliding rate

A test method and slip rate technology, applied in vehicle testing, machine/structural component testing, braking safety systems, etc., can solve the problem of poor intuition, uncertainty of test results, difficulty in obtaining ABS control evaluation results, etc. question

Inactive Publication Date: 2005-07-27
CHINA AUTOMOTIVE TECH & RES CENT
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Problems solved by technology

Therefore, this method has many uncertainties
In addition, the test object of the test is the ABS system, and if it is judged by ABS, it seems that the logic is not rigorous enough
[0016] To sum up, using traditional test methods to test ABS performance, there are obvious theoretical flaws in both the description of the braking process and the test of the adhesion coefficient utilization rate, and the intuitiveness of the test results is very poor. Accurate evaluation results of ABS control level

Method used

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  • Experimental method for appraising ABB controlling level by sliding rate
  • Experimental method for appraising ABB controlling level by sliding rate
  • Experimental method for appraising ABB controlling level by sliding rate

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail: through theoretical analysis and the ABS test method that adopts at home and abroad at present is analyzed and researched, proposes to describe the ABS control process with the slip rate change of each wheel in the braking process experiment method. Firstly, measure the slip rate-vehicle speed curve and slip rate-time curve of each wheel during the braking process of the vehicle, and then compare the above curves with the adhesion coefficient-slip rate curve of the test road surface to directly obtain any The adhesion status of each wheel at a time, so as to directly evaluate the adjustment level of ABS. Because the adhesion coefficient is an important parameter to evaluate the adhesion state of the wheel, and the adhesion coefficient is closely related to the slip rate, so the slip rate-vehicle speed curve and the slip rate-time curve are compar...

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Abstract

A test method for evaluating ABS control level by sliding rate includes measuring out curve of each vehicle wheel sliding rate to speed of vehicle and curve of sliding rate to time in braking procedure first, then comparing abovesaid curves with curve of road attachment coefficient to sliding rate for obtaining attachment state for each wheel at any time and carrying out direct evaluation for ABS control level based on the obtained state.

Description

technical field [0001] The invention relates to a test method for evaluating ABS control level, in particular to a test method for evaluating ABS control level with slip ratio. Background technique [0002] During the movement of the car, the movement of the wheels is a combination of horizontal movement and rotational movement. When the horizontal and rotational motions are precisely coordinated, the wheels do pure rolling. This situation is relatively rare, and in most cases the horizontal and rotational movements of the wheels are uncoordinated. When the vehicle is running normally or accelerating, the rotational movement of the wheels is enhanced, and the wheels slip backward relative to the ground, thereby generating forward driving force. When the vehicle brakes, the rotational motion of the wheels is weakened, and the wheels slide forward relative to the ground, thereby generating backward braking force. ABS is an anti-lock braking system, which is a car safety equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22G01L5/28G01M17/007
Inventor 刘地
Owner CHINA AUTOMOTIVE TECH & RES CENT
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