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Detection method of stage test wheel medium and maximum steering angle

A technology of steering angle detection and detection method, which is applied in the direction of vehicle steering/bump performance, measuring devices, instruments, etc., and can solve the problems of maximum steering inner and outer angle detection errors, wheel median angle errors, and the inability to automatically and accurately determine wheels, etc.

Inactive Publication Date: 2007-07-25
吴明
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Problems solved by technology

[0002] At present, when the car is on the wheel steering angle inspection platform, when the maximum steering inner and outer angles of the left and right wheels are detected, since the center of the wheel cannot be automatically and accurately determined, the steering wheel is randomly driven onto the inspection platform as the center of the wheel, and the angle of the center of the wheel is The error caused a large error in the detection of the inner and outer angles of the maximum steering, and the repeatability was very poor. Even in the same steering, the maximum internal angle was smaller than the detection result of the maximum external angle.

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  • Detection method of stage test wheel medium and maximum steering angle

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Embodiment Construction

[0029] After driving the front wheels of the vehicle on the wheel steering angle inspection platform, you can pull the handbrake to keep the position of the rear axle fixed, first turn the steering wheel to the left to make it reach the maximum steering angle and stabilize at this angle, and use this position as a test Then turn the steering wheel slowly to the right to make the wheels gradually reach the maximum right-hand angle from the maximum left-hand angle. Measure the steering angles β and α of the left and right test benches at the same time during this process, and obtain the corresponding δ value. Determine δ in the range of β from 2° to 10° 2 value and the corresponding β 2 、α 2 value, find or compute symmetric δ using interpolation 2 The corresponding β 3 、α 3 value, according to (2) and (3) can be automatically calculated β 0 and alpha 0 .

[0030] 1. According to the example in the above table: δ 2 = 2.5, δm = 7.9, β 2 = 8°, α 2 =5.5°, β 3 = 66.6°, α ...

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Abstract

The invention is a bench type wheel balanced position and maximum turning angle detecting method, according to the character that the turning trapezoid of an auto-car causes right and left turning symmetry relative to the balanced position, in the whole course that the wheels turn from the maximum left turning angle to the maximum right turning angle, able to obtain two symmetric delta-corresponded right and left detected angles and maximum turning angle differences by detecting the turning angles and turning angle differences of the right and left wheels at the same time, calculating to be able to obtain the detected angles beta0 and alpha0 of the right and left wheels as in the balanced position, and because the change rate of delta is relatively large when the right and left turning angles are larger relative to the balanced position, able to select two relatively small symmetric delta to calculate the balanced angle and able to calculate a plurality of symmetric delta, separately, to obtain a plurality of belta0 and alpha0, averaging them and thus accurately detecting the maximum inner and outer turning angles of the right and left wheels.

Description

technical field [0001] The invention relates to a method for detecting the middle position of the left and right wheels and the maximum steering inner and outer angles on a wheel steering angle inspection platform of an automobile, and belongs to the technical field of bench test automobile performance detection. Background technique [0002] At present, when the car is on the wheel steering angle inspection platform, when the maximum steering inner and outer angles of the left and right wheels are detected, since the center of the wheel cannot be automatically and accurately determined, the steering wheel is randomly driven onto the inspection platform as the center of the wheel, and the angle of the center of the wheel is The error caused a large error in the detection of the inner and outer angles of the maximum steering, and the repeatability was very poor. Even in the same steering, the maximum internal angle was smaller than the detection result of the maximum external ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/22G01M17/06
Inventor 吴明
Owner 吴明
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