基于雙重積分模型抗擾控制的壓電薄壁結(jié)構(gòu)振動(dòng)控制
[Abstract]:For the vibration control of piezoelectric intelligent structures with unknown disturbance frequency or random variation, a dual integral model disturbance rejection control algorithm is proposed and developed and applied to the vibration control of piezoelectric laminated beams. Firstly, the dual integral state space model is established and the physical disturbances such as external force disturbance, nonlinear part of the system, modeling error and partial state variables of the system are summed up into generalized perturbations. Secondly, with the help of the special structure of the dual integral model, the system is decoupled and the PI observer and disturbance rejection controller with fast convergence rate are designed by pole assignment method. The PI observer can quickly and accurately observe generalized disturbance and system state variables and feedback them to the system through disturbance rejection controller to control vibration. Finally, the simulation of vibration control of intelligent cantilever beam with parallel piezoelectric actuators and sensors verifies the disturbance rejection control algorithm of the dual integral model, and compares the control effect with the disturbance rejection control algorithm using GPI observer. The results show that the dual integral model disturbance rejection control algorithm can effectively control the vibration caused by disturbance with unknown frequency or random variation, and its vibration control performance is better than that of the disturbance rejection control algorithm using GPI observer.
【作者單位】: 西北工業(yè)大學(xué)機(jī)電學(xué)院;南京航空航天大學(xué)機(jī)械結(jié)構(gòu)力學(xué)及控制國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家自然科學(xué)基金(51505380、51475373、51375390) 南京航空航天大學(xué)機(jī)械結(jié)構(gòu)力學(xué)及控制國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金(MCMS-0517G01)資助
【分類號(hào)】:TB53
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