摘要
一种高效的控制算法是提升半主动减振控制系统性能的关键指标之一。该文在结合限阻尼系数模块、天棚控制算法及地棚控制算法的基础上,依据已有的磁流变减震器,设计并优化了复合天棚控制算法。通过建立垂直方向二自由度运动模型,基于Matlab Simulink平台对不同压缩行程、复原行程二维阻尼系数赋值仿真实验,得到最优阻尼系数区间,从而搭建复合天棚控制算法的限阻尼系数模块;进而对控制算法进行赋值迭代仿真,实现对复合天棚半主动控制算法阻尼系数的优化。基于时域路面激励的仿真结果表明,改进的复合天棚控制算法不仅克服了传统天棚控制无法有效抑制非簧载质量振动的缺点,且相比被动控制策略有效减少了加速度均方根值、相对动载荷均方根值及动挠度均方根值,可提升滑跑过程舒适性与操纵稳定性。
An efficient control algorithm is one of the key indexes to improve the performance of semi-active vibration control system.In this paper,a compound sky-hook control algorithm is designed and optimized based on the existing magnetorheological shock absorbers,which combines damping coefficient limiting module,sky-hook control algorithm and ground-hook control algorithm.By establishing a vertical two-degree-of-freedom motion model,based on Matlab Simulink platform for different compression stroke and recovery stroke two-dimensional damping coefficient assignment simulation experiment,the optimal damping coefficient range was obtained,and the damping coefficient limit module of composite sky-hook control algorithm was built.Then,the optimization of the damping coefficient of the composite sky-hook semi-active control algorithm is realized by iterative simulation of assigned value.Simulation results based on time-domain pavement excitation show that the improved composite roof control algorithm not only overcomes the shortcomings that traditional sky-hook control can not only effectively suppress unsprung mass vibration,but also effectively reduce the root mean square value of acceleration,root mean square value of relative dynamic load and root mean square value of dynamic deflection compared with the passive control strategy,which can improve the comfort and handling stability of taxiing process.
作者
祝世兴
赵玉彬
魏戬
祝恒佳
ZHU Shixing;ZHAO Yubin;WEI Jian;ZHU Hengjia(Aeronautical Engineering College, Civil Aviation University of China, Tianjin 300300, China;College of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650000, China)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第3期459-467,共9页
Journal of Northwest University（Natural Science Edition）
基金
国家自然科学基金(12002367)。
关键词
半主动控制
天棚控制
复合控制
参数优化
semi-active control
sky-hook control
compound control
parameter optimization
