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| Test precision improvement of vehicle driving wandering test system based on laser ranging |
| 1. School of Automotive Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China; 2. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, Hubei 430070, China |
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Abstract To improve the precision of vehicle driving wandering test system based on laser ranging, the effects of entering angle measurement, driving wandering math and original measurement data processing on test precision were analyzed. The corresponding optimized solutions were proposed with a photoelectric switch to control two pairs of laser ranging sensors for entering angle measurement and with Laiyite criterion to reject test data with gross error. A driving wandering simulation test system was established based on laser ranging, and the simulation tests were conducted with a model car. The results show that in the dynamic test, the system test errors are all less than 6.50 mm, and in the repeatability test, with the mean value of test values as accurate value, the system test errors are all less than 3.50 mm with the test standard error of 1.56 mm, which means the improvement of the test system precision is achieved.
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Received: 15 May 2017
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2018, Vol. 39 
