Analysis of active vibration control for piezoelectric intelligent structures by ANSYS and MATLAB

Taking the piezoelectric flexible plate as research object, this paper presents an efficient method to simulate and analyze intelligent structures with MATLAB and ANSYS applied. Firstly, this paper focuses on the development of modeling method for intelligent structures with distributed sensors and actuators. Modal analysis and transient analysis were done by using ANSYS 11.0 software, with the finite model of the intelligent plate constructed. Then based on an APDL (the design language of ANSYS) program, the vibration control experiments were done. By analyzing different control performance of different actuator assign position, the optimization criterion suggested by NASA for piezoelectric sensors and actuators arrangement was verified. While the optimal configuration was chosen, the control channel and primary path model of the vibration control system were obtained with MATLAB system identification toolbox employed. Finally according to the identified model an iterative learning control system was developed. The analysis and experimental results show that the analysis method for intelligent structures proposed in this paper is economical and effective and the designed controller has a good vibration suppression performance.