New Style Inertial Actuator Drived By Piezoelectric Stack And Control System Of Displacement Precision

Inertial piezoelectric actuators have much characteristic such as compact configuration,good response characteristic,non-electromagnetism interfere,convenient control and so on, they are often applied on high resolution,large displacement occasion and accepted widely attention.Specially in recent years as the performance of piezoelectric element being improved, its application is gradually enlarging.This article proposes to change friction coefficient between the driving mechanism and the contact face, also is to controls friction force method between the driving mechanism and the bearing surface, forms the research plan of new style inertial actuator drived by piezoelectric stack..Analyzed the principle work of driving mechanism, design and manufacture new inertia driving mechanism structure that has been possible to realize thetranslation, and has made therelated performance test; Simultaneously in order to enhance the pointing accuracy of the newinertia driving mechanism, designed a set of closed loops feedbacks localization the control system. Maincontent as follows:1.IntroductionThrough the general introduction to main application field,main types with advantages and disadvantages,current actuation material , the paper draw a conclusion that PZT has a great advantage in precision actuation field . Also, the chapter gives the analysis of the practical structure and the existing problems of piezoelectric precision actuator.2. Basic theory on piezoelectric driving.The chapter discusses piezoelectric effect and converse piezoelectric effect. Discuss the basic principle of piezoelectric ceramic and kinds of piezoelectric actuator design the driver of precise actuator. It supplied theoretical dependence to the selection of piezoelectric multilayer actuator and the design of precise actuator.