Research On Active Vibration Control Of Cantilever Beam Based On IPMC Actuator

Ihe active vibration control is high-tech in the area ot vibration engineering, for its remarkable advantages, it is becoming an effective mean to solve the vibration control problems of the aerospace and other fields. These years, with the rapid development of the precision machining technology, micro-drive mechanical systems, medical technology and aerospace technology, the application of micro-nano techniques is more and more widespread. Microcantilevers have been widely applied in the micro-nano field because of its simple structure, and the vibration of the microcantilever is a significant impact on the application of micro-nano techniques. The active vibration control of the microcantilever needs very small control force. As an actuator, IPMC can output small force. So it is suitable as an actuator in the micro-nano field.This thesis is about the research of active vibration control of the cantilever beam based on IPMC actuator. The main contents of this thesis are as follows:Firstly, IPMC feature was summarized, and the mathematical model of IPMC driving was studied from the theoretic and experiment, and eventually IPMC driving mathematical model concrete expression was identified. Secondly, based on the Bernoulli-Euler beam assumption, the vibration mechanics model of a cantilever beam was analyzed systematically, and the differential equation of a cantilever beam vibration was obtained. The1st to4th order natural frequencies and vibration modes was solving. The vibration numerical solution of a cantilever beam was analyzed by ANSYS, and the solution proves the analytic solutions of a cantilever beam vibration correct. And eventually According to the cantilever beam vibration mechanics model and IPMC driving mathematical model, the mathematical model of the cantilever beam based on IPMC actuator was built. Thirdly, the parameters of the IPMC actuator’s position was determined and optimized. Fourthly, The PID control and LQR control algorithm were designed and made simulations on MATLAB/Simulink, and the simulation results show that the control methods are feasible. Finally, the experiment platform of active vibration control of cantilever beam based on IPMC actuator was built, and in this process, the cantilever fixture was designed. The PID control system based on the LabVIEW was designed. The result of the experiment provides that IPMC actuator can control the cantilever beam vibration.