磁流变变刚度变阻尼扭转振动仿人智能控制  

Artificial intelligent control of torsional vibration with MR variable stiffness variable damping

作　　者：李文峰 葛新锋[1] 席军 李坪洋 刘乐 高健容 LI Wenfeng;GE Xinfeng;XI Jun;LI Pingyang;LIU Le;GAO Jianrong(College of Electrical and Mechanical Engineering,Xuchang College,Xuchang 461000,China;College of Electromechanical and Automotive Engineering,Yantai University,Yantai 264005,China;School of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]许昌学院电气与机械工程学院,河南许昌461000 [2]烟台大学机电汽车工程学院,烟台264005 [3]重庆大学机械与运载工程学院,重庆400044

出　　处：《振动与冲击》2024年第23期270-279,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金面上项目(52075056);河南省自然科学基金面上项目(242300420049);大学生创新创业训练计划项目(202310480006)。

摘　　要：有效的扭转刚度控制可以通过调节系统的固有特性和共振频率改善系统的扭转振动性能、恰当的扭转阻尼调节可以通过耗散扭转振动的能量来抑制扭转振动的幅值。针对扭转刚度和扭转阻尼对传动系统扭转振动的不同影响规律,提出一种基于混合田口遗传算法的磁流变(magneto-rheological,MR)传动系统变刚度变阻尼扭转振动仿人智能控制策略。首先根据所设计的磁流变扭转减振器建立了磁流变变刚度变阻尼传动系统动力学模型;基于混合田口遗传算法对磁流变传动系统扭转刚度和扭转阻尼控制参数的动态寻优结果,设计了一种兼顾时域和频域、具有分区协同、多模态多控制器的仿人智能控制器;随后进行了仿真分析和试验研究,结果表明,在较宽频段内,基于混合田口遗传算法的仿人智能控制均能有效抑制磁流变传动系统的扭转振动;当试验激励频率为3.5 Hz时,相对于被动传动系统和改进天棚控制系统,所提仿人智能控制分别将系统的峰值角位移和角速度减小44%、48%和14%、18%,其控制效果明显优于改进天棚控制,显著改善磁流变传动系统的输出特性。Effective torsional stiffness control can improve torsional vibration performance of a system by adjusting its natural characteristics and resonance frequencies,and appropriate torsional damping adjustment can suppress amplitude of torsional vibration by dissipating energy of torsional vibration.Here,aiming at different influence laws of torsional stiffness and torsional damping on torsional vibration of a transmission system,an artificial intelligent control strategy for variable stiffness variable damping torsional vibration of a magneto-rheological(MR)transmission system based on hybrid Taguchi genetic algorithm was proposed.Firstly,a dynamic model of a MR variable stiffness variable damping transmission system was established according to the designed MR torsional damper.Based on dynamic optimization results of torsional stiffness and torsional damping control parameters of MR transmission system using hybrid Taguchi genetic algorithm,an artificial intelligent controller with partition collaboration,multiple modes and multiple controllers in both time and frequency domains was designed.Subsequently,simulation analysis and test study were conducted,and the results showed that within a wider frequency range,the artificial intelligent control based on hybrid Taguchi genetic algorithm can effectively suppress torsional vibration of MR transmission system;when the test excitation frequency is 3.5 Hz,compared to the passive transmission system and the improved skyhook control system,the proposed artificial intelligent control reduces peak angular displacement and peak angular velocity of the system by 44%,48%,and 14%,18%,respectively;its control effect is obviously better than that of the improved skyhook control and significantly improves output characteristics of MR transmission system.

关 键 词：磁流变(MR) 变刚度变阻尼 混合田口遗传算法 仿人智能控制 

分 类 号：TH113.1[机械工程—机械设计及理论] TH132