Study On System Of Active Vibration Isolation Based On Piezoelectric Material

With the development of modern industry techniques, vibration problems have already been paid more attentions. How to decrease the bad and negative effect of vibration on equipments, especially for the precise equipments has become the research focus of the companies and research units all over the world. Meanwhile, with the modern material technique developing, many kinds of multiple and intelligent materials has been moved into the people's eyes because of the excellent chemical and physical traits. Under this situation, my paper is aimed at the study of active vibration isolating system.The paper first introduces the developing status of active vibration isolating technique in and out of the nation, especially the piezoelectric actuator applying to the active control, and emphasizes the necessary of vibration isolating study. After analyzing some kinds of vibration isolating techniques, the piezoelectric chinaware is focused for the material using in the actuator.Secondly, the paper simply introduces some knowledge relating to the vibration isolating design including the isolating patterns, projects, materials, etc, and establishes dynamical models and kinetic equation.Thirdly,the paper introduces the characteristic of piezoelectric chinaware, especially the positive and negative piezoelectric effect, and the paper also analyses the single level and double level vibration isolating systems, and uses different controlling methods, especially for the double level vibration isolating system. In order to find the suitable controlling method, the paper emulates two methods– multiple and full feedback control, and selects the full feedback controlling method as the final method, finally, by comparing the different isolating results of different parameters, find the suitable parameter, which validate the possibility of the isolating design using piezoelectric chinaware for the future study in this field.