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International Journal of Automotive Technology > Volume 17(5); 2016 > Article
International Journal of Automotive Technology 2016;17(5): 769-776.
doi: https://doi.org/10.1007/s12239-016-0076-z
HYBRID MODELING OF SEAT-CAB COUPLED SYSTEM FOR TRUCK
L. L. ZHAO1, C. C. ZHOU2, Y. W. YU2
1Beijing University of Posts and Telecommunications
2Shandong University of Technology
ABSTRACT
For the complex structure and vibration characteristics of the seat and cab system of truck, there is no reliable theoretical model for the suspensions design at present, which seriously restricts the improvement of ride comfort. In this paper, a 4 degree-of-freedom seat-cab coupled system model was presented; using the mechanism modeling method, its vibration equations were built; then, by the tested cab suspensions excitations and seat acceleration response, its parameters identification mathematical model was established. Combining the tested signals and a simulation model with the parameters identification mathematical model, a new method of hybrid modeling of seat-cab coupled system was presented. With a practical example of seat and cab system, the parameters values were identified and validated by simulation and test. The results show that the model and method proposed are correct and reliable, and lay a good foundation for the optimal design of seat suspension and cab suspensions to improve ride comfort.
Key Words: Ride comfort, Seat-cab coupled system, Dynamic characteristics simulation, Hybrid modeling
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