车辆半主动隔振系统减振分析

履带车辆半主动悬挂是车辆悬挂系统的发展方向，磁流变可控阻尼器的出现，使车辆悬挂系统实时阻尼控制成为车辆减振的有效方式．基于磁流变体本构关系的Bingham模型，在对自行研制的双出杆剪切阀式磁流变减振器进行实验研究的基础上，对影响磁流变减振器阻尼力的各种因素进行了综合分析．将半主动悬挂系统看成是一个智能材料与结构，其中驱动元件采用磁流变阻尼器，并通过传感元件采集振动信息，依靠信息处理单元对采集到的信息进行分析、处理，进而实时改变磁流变阻尼器的阻尼力，使悬挂系统的工作性能得到改善．建立了四自由度车辆悬挂系统的动力学模型，并应用非线性随机振动理论，在对模型输入进行过滤白噪声简化的基础上。探讨了用FPK法解方程的可能途径．

Vibration isolation analysis for vehicle semi-active control suspension systems

Magnetorheological fluid (MRF) damper is very good for real-time damp force control in vehicle suspension systems. The damping force of a MRF damper was analyzed using Bingham model and all the factors having effect on the damping force of a MRF damper were discussed by studying the experimental data of self-made MRF shear-valve damper. The semi-activity suspension system is made of smart material and the actuating element is a MRF damper. The processor analyze the vibration information obtained by sensors and deliver instructions to the MRF damper for real-time adjustment of damper force. The performance of suspension system based on MRF damper is obviously improved. A 4D dynamic model has been established for the vehicle suspension system. No-linear random vibration theory is used to discuss how to solve this equation by FPK based on filtered white noise input.