Integrated actuator/control design of smart pantograph mechanism for vibration suppression

In these years, various types of machines have advanced to be more high-performance, light and small. On the other hand, it becomes hard to achieve a required performance of the systems only by structural design. It has been expected that technology of smart structure contributed to the development of small and light-weight mechatronics devices with the required performance. In this study, the smart pantograph mechanism installed in a precise positioning device is composed of the PZT sensor and actuator in order to reduce the structural vibration. The placement of the PZT actuator and H/sub 2/ control system are simultaneously designed based on genetic algorithm to improve the effect on the vibration suppression. It has been verified by applications that an enhanced performance for the vibration suppression can be achieved by the proposed integrated design method.