某单缸双通道磁流变阻尼器的时间响应特性分析

所有实时控制应用都需要快速响应时间。为使磁流变阻尼器满足实时控制的需要,动态响应时间的研究就变得尤为重要。以某新型双通道磁流变阻尼器为研究对象,对影响阻尼器响应时间的各环节进行研究,通过仿真结果结合理论分析建立电磁响应模型,使用有限差分法建立磁流变液流变效应过程的数学模型,获得从断电到通电通道内流场及阻尼力的的变化过程,从而获得阻尼器的动态响应时间。通过阻尼器响应时间测试实验,获取阻尼器的实际响应时间,与理论计算的结果进行对比,验证该计算方法的可信性。

Time response characteristics of a single-cylinder dual-channel MR damper

All real-time control applications require fast response time.In order to make a magnetorheological (MR) damper meet the requirements of real-time control, dynamic response time study becomes particularly important.Here, a new type dual-channel MR damper was taken as the study object, various links affecting the response time of the damper were studied.The simulation results were combined with theoretical analysis to establish the damper’s electromagnetic response model, and the finite difference method was used to establish the mathematic model for rheological effect process of a MR fluid, obtain the change process of flow field and damping force in the channel from power outage to power on, and further achieve the dynamic response time of the damper.The actual response time of the damper was obtained with tests and compared with the theoretical calculation results to verify the creditability of the proposed calculation method.