Development of Optimal Design Support System of Actuator Position and Control System Considering Resonant Vibration Suppression in Cantilever

Vibration suppression is an essential issue in mechatronic systems, where actuator position and controller design have a significant effect on vibration suppression performance. This paper develops a support system to design an actuator position and control system for vibration suppression optimally. The vibration suppression problem in flexible beams using a piezoelectric actuator as the actuator is discussed as a primary investigation. In the design support system, vibration response is calculated based on the elastic deformation obtained by finite element analysis on the computer. Particle swarm optimization is adopted to search the optimal actuator position based on the evaluation function. The parameters of the controller are determined by the nonlinear optimization for the frequency response of the plant calculated by finite element analysis. The validity of the system is verified by numerical simulations and experiments using the cantilever with the piezoelectric actuator.