The basic principles of some new type piezoelectric actuators are described, they include piezoelectric pump, multi dimension piezoelectric motor and ultrasonic anti friction device.

A new design method for driving circuits of piezoelectric motor was proposed.

Being a sort of new principle motor, the piezoelectric motor is quite different from the electromagnetic motor; its driving torque isn t acquired by the electromagnetic effect but by the reverse piezoelectric effect of piezoelectric ceramics.

Analyze and design a miniaturing driving and controlling circuit of piezoelectric motor,and its outputting frequency can be adjusted.

Study on dynamic performance of multi-DOF electro-hydraulic servo system;

Development of a multi-DOF anthropomorphic prosthetic hand;

Design of Simulation System for Rescue in Multi-DOF Physical Shelves;

Review on multi-degree-of-freedom measurement;

Probability perturbation finite element method for response analysis of multi-degree-of-freedom nonlinear vibration systems with random parameters;

Nonlinear vibration isolation system used practically is generally a multi-degree-of-freedom system due to effect of nonlinearity on decoupling of system.

In this paper, the authors have given a theoretical analysis of the use of multi-degree of freedom for the accurate design of gear hob edges,and derived some formulas for this purpose.

The construct,driving principle and output performances of the cylinder type ultrasonic motor with multi-degree of freedom were presented.

A new cylinder type ultrasonic motor with multi-degree of freedom was developed based on increasing its driving efficiency and improving its output characteristics.

Analysis of the Natural Frequency and Main Vibration Mode for Multi-Freedom System Based on MATLAB;