In order to install and test micro system component by higher precision and reliability, it is very necessary to research a kind of gripper having sensing function. The gripper could be implemented using piezoelectric ceramic for its bilateral electromechanical property, the gripper is named self-sensing(SSA) gripper. SSA gripper has advantages in decreasing system volume and weight, saving space, true collocation and increasing stability. The point in realizing SSA is to find a good approach which could se...