基于模糊PID控制的磁流变半主动抗冲击系统最优设计研究
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摘要
为弥补被动隔振系统抗冲击设计中存在的不足,根据最优抗冲理论,设计了磁流变阻尼器与隔振器并联的隔振抗冲击系统。针对磁流变阻尼器非线性强、PID控制参数难实时调节等问题,设计了模糊PID控制器并进行了模拟仿真。通过对不同抗冲方法和极限情况的仿真证明:基于模糊PID控制的磁流变半主动最优抗冲设计可以在保证设备安全的前提下,减小冲击加速度和系统位移,提高被动隔振系统的抗冲击性能。
To make up for the defects in the shock isolation design of passive vibration isolation, a vibration and shock isolation system is designed according to the optimal shock isolation theory, which is composed of a magnetorheological(MR) damper and a vibration isolator. For the problems such as the high nonlinear of the MR damper and the hard real-time adjustment of PID control parameters, the fuzzy PID controller is designed and the system is simulated. The simulation on different resis-tance methods and the extreme situations shows that the semi-active MR optimal resistance design based on the fuzzy PID control can decrease the impact acceleration and system displacement, thus improving the impact resistance performance of the passive vibration isolation.
To make up for the defects in the shock isolation design of passive vibration isolation, a vibration and shock isolation system is designed according to the optimal shock isolation theory, which is composed of a magnetorheological(MR) damper and a vibration isolator. For the problems such as the high nonlinear of the MR damper and the hard real-time adjustment of PID control parameters, the fuzzy PID controller is designed and the system is simulated. The simulation on different resis-tance methods and the extreme situations shows that the semi-active MR optimal resistance design based on the fuzzy PID control can decrease the impact acceleration and system displacement, thus improving the impact resistance performance of the passive vibration isolation.
引文
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[7]陈学文,张衍成,张玉蛟,等.车辆座椅悬架自适应模糊PID控制及仿真[J].机械科学与技术,2014,33(5):776-780.CHEN Xue-wen,ZHANG Yan-cheng,ZHANGYu-jiao,et al.Research on adaptive fuzzy-PID control and simulation of vehicle seat suspension[J].Mechanical Science and Technology for Aerospace Engineering,2014,33(5):776-780.(in Chinese)
[8]张立峰.基于磁流变阻尼结构的PID控制算法优化研究[D].南京:南京理工大学,2016:76-79.
[2]翁雪涛,朱石坚,何琳.限位器抗冲击计算[J].中国造船,2002,43(2):85-89.WENG Xue-tao,ZHU Shi-jian,HE Lin.Snubber shock resistance calculation[J].Ship Building of China,2002,43(2):85-89.(in Chinese)
[3]李忠献,徐龙河.新型磁流变阻尼器及半主动控制设计理论[M].北京:科学出版社,2012:15-18.
[4]SEVIN E,PILKEY W D.Optimum Shock and Vibration Isolation[M].Washington D.C.:Shock and Vibration Information Analysis Center,1971:7-9.
[5]唐斯密,朱石坚,楼京俊.半主动干摩擦阻尼器在隔振系统中的抗冲击优化设计研究[J].振动与冲击,2012,31(1):11-15.TANG Si-mi,ZHU Shi-jian,LOU Jing-jun.Optimal shock isolation design for a vibration isolation system with a semi-active control dry friction damper[J].Journal of Vibration and Shock,2012,31(1):11-15.(in Chinese)
[6]郭耀辉.磁流变阻尼器等效阻尼建模及其控制系统研究[D].合肥:合肥工业大学,2014:61-62.
[7]陈学文,张衍成,张玉蛟,等.车辆座椅悬架自适应模糊PID控制及仿真[J].机械科学与技术,2014,33(5):776-780.CHEN Xue-wen,ZHANG Yan-cheng,ZHANGYu-jiao,et al.Research on adaptive fuzzy-PID control and simulation of vehicle seat suspension[J].Mechanical Science and Technology for Aerospace Engineering,2014,33(5):776-780.(in Chinese)
[8]张立峰.基于磁流变阻尼结构的PID控制算法优化研究[D].南京:南京理工大学,2016:76-79.