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目前减振器的动态特性大多通过大量重复试验来获取,该类设计方法缺乏一定的理论依据,周期长、成本高。针对这一问题,以某乘用车减振器为分析对象,在分析减振器工作原理的基础上对其动态特性进行详细的数学建模,然后建立减振器仿真分析流程图,编写MATLAB程序仿真计算减振器在多种频率下的动态特性,并应用MTS849试验台测试样机,对仿真结果与试验结果进行对比分析,验证了数学建模与仿真分析的准确性。这种应用仿真分析与台架测试相结合的方法为减振器的设计提供了理论依据,能缩短研发周期,降低成本。
At present, the dynamic characteristics of shock absorbers are mostly obtained through a large number of repeated tests. This kind of design method lacks certain theoretical basis and has long cycle and high cost. In view of this problem, take a passenger car shock absorber as the analysis object, on the basis of analyzing the working principle of the shock absorber, it carries on the detailed mathematical modeling to its dynamic characteristic, and then establishes the flow chart of the shock absorber simulation analysis, writes MATLAB The program simulation is used to calculate the dynamic characteristics of the shock absorber under various frequencies. The MTS849 test bench is used to test the prototype. The simulation results and the test results are compared and analyzed, which proves the accuracy of the mathematical modeling and simulation analysis. This method combining application simulation analysis with bench testing provides a theoretical basis for the design of shock absorber, which can shorten the development cycle and reduce the cost.