摘要
采用Matlab/simulink软件,建立了二分之一车体四自由度主动悬架系统的动力学模型。结合模糊控制理论,应用FIS Editor工具箱,建立Mamdani型模糊推理系统。在此基础上,本文进行了主动悬架系统特性的仿真分析,并与传统的被动悬架的性能指标比较。研究结果表明,车身垂直加速度峰值下降了43.3%,车身俯仰角加速度峰值下降了31.1%,前悬架动行程下降了35.5%,前轮与路面的动载荷的峰值下降了26.3%,有效地改善了汽车性能指标,能够满足汽车稳定性和舒适性的要求。
The active suspension system dynamic model of one-half body with four freedoms was estab-lished by Matlab/simulink. Combining the fuzzy control theory,Mamdani fuzzy inference system was built by FIS editor toolbox. On this basis, system performance of active suspension was simulated. Comparing the results with performance of traditional passive suspension, the results showed that vertical acceleration peak value of vehicle body decreased by 43.3%, acceleration peak value of body pitching angle decreased by 31.1%,front suspension dynamic travel decreased by 35.5%,and peak value of dynamic load between front wheel and pavement decreased by 26.3%. The results of the research improved the performance indica-tors of vehicle effectively,and were able to meet the requirements of vehicle stability and comfort.
出处
《交通节能与环保》
2014年第5期47-50,共4页
Transport Energy Conservation & Environmental Protection
