基于自校正PID控制的智能悬臂梁振动控制  

Vibration Control of Smart Cantilever Beams based on Self-tuning PID Control

作　　者：胡晓琳 张婷 HU Xiaolin;ZHANG Ting(Automotive Engineering College, Shanghai University of Engineering Science,Shanghai 201620, China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《噪声与振动控制》2019年第2期21-26,69,共7页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(11702168)

摘　　要：由于智能结构的工作环境变化多端,各种性能参数会随着环境变化而变化,先前建好的模型不再适应设计好的控制律。利用压电双晶片的驱动传感一体化特性,实现智能悬臂梁的自适应控制。基于极点配置理论,采用自校正PID控制方法在线实时设计控制参数,解决模型参数无法实时更新进而导致的控制精度低的问题。同时,将基于Neigler-Nicholes参数整定法的普通PID控制与基于自校正PID控制方法的控制效果进行对比。运用MATLAB的SIMULINK进行数值仿真并进行实验验证,对此两种控制方法的控制结果进行对比,得出采用自校正PID控制的效果更为显著和更为有效的结论。利用压电双晶片的驱动传感特性,使智能悬臂梁的自由振动得到有效控制。因此,基于自校正PID控制技术,采用压电双晶片的方法可为智能结构吸振减振提供理论研究与实验研究基础。Because of the variable working environment of the intelligent structures, the performance parameters will also change. The previously built model may not be adaptable any longer to the preset control law. This paper applies the characteristics of the driving-sensing integration of the piezoelectric bimorph to realize the adaptive control research of smart cantilever beams. Based on the pole assignment theory, the self-tuning PID control method is used to design the on-line control parameters to solve the problem that the model parameters cannot be updated in real time and the control precision is low. At the same time, the effect of the general PID control based on Neigler-Nicholes parameter tuning method is compared with that of the self-tuning PID control method. Through the numerical simulation based on MATLAB / SIMULINK and experimental verification, the control results of the two control methods are compared. It is shown that the self-tuning PID control is more effective. The free vibration of the smart cantilever beam is effectively controlled by using the driving-sensing characteristics of the piezoelectric bimorph. This study provides a theoretical and experimental basis for vibration absorption and vibration reduction of smart structures.

关 键 词：振动与波 系统辨识 压电双晶片 自校正PID 控制 智能悬臂梁 振动控制 

分 类 号：O32[理学—一般力学与力学基础]