| Along with the fast development of national economy, the automobile retention rapidly gain in our country, The automobile brought the convenience to the people's life, At the same time the safe problem of transportation caused by automobile also become increasingly outstanding. The good status of automobile is basic guarantee for automobile driving safely, and it is significant method that the safe run of automobile is guaranteed by checking the good or bad status. Checking the brake-performance of automobile is one of the important item.At present, there are two kind of automobile testing equipments installed onto automobile testing line in homeland. One is reverse-force braking equipment, Another is flat-braking equipment, but these two equipments hold some limitations when they are used to test automobile installed ABS system.This paper set up the force-mathematic model and then analysis the force-mathematic model in theory. This paper discussed that the automobile-tesing equipments should possess function, and bring upped the total thought of the system hardware software design , and introduced the system construction and work principle. On these grounds, This paper realizes the equipments' s whole control hardware and software based on AT91RM9200. The software system primarily completed the transplantation ofμC/OS-II on the AT91RM9200 and embed real-time database, main control-method and network the LwIP negotiate.According experiment, this control the system can completely attain to test the accuracy and real-time requirements. And this equipments can be used as one of some testing-equipments on test-line.This equipment completely realizes gathering the function of testing the brake-performance and environmental protection-performance and driving-performance of automobile, which save the cost of test-line. |
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