PIEZOSTACK ACTUATOR WITH HIGH PRECISION, LONG TRAVEL DISTANCE AND LOW DRIVING VOLTAGE
We designed a rotary piezoelectric stack actuator by making use of flexible multi-lever linkage structure.Based on the principle of leveraging, the levers can amplify the displacement from piezoelectric stacks and transfer the vibration to the driving feet, which makes it possible to drive the actuator in a large frequency band under low driving voltage and control the output speed of the actuator precisely.Experiment results show that the linear relation between output speed and exciting frequency, the minimum operating voltage can be as low as 20V.Dynamic model of the levers were built to analyze the relationship between structure stiffness and deformation.Finite element modeling software was used to determine the parameters of the stator structure and modify the actuator behavior.The results predicted that it is possible to achieve low voltage, long travel distance and high precision actuation with piezoelectric stack actuator.
Piezoelectric stack Rotary Actuator Flexure hinge
Jian-min QIU Yin Yang Jia-mei JIN Dalius MAZEIKA Yi-ping WANG Pitor Vasiljev
Department of Engineering Mechanics, Nanjing University of Aeronautics and Astronautics, Nanjing 250 Faulty of Fundamental Science, Vilnius Gediminas Technical University, Vilnius, LT-10223, Lithuania Faulty of Fundamental Science, Vilnius Pedagogical University, Vilnius, LT-10223, Lithuania
国际会议
The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)
成都
英文
21-25
2017-10-27（万方平台首次上网日期，不代表论文的发表时间）