Piezoelectric linear actuator multi drive mode

piezoelectric actuator

1. Department of Mechanical Engineering ( Design Engineering) Development of a multi-drive-mode piezoelectric actuator with parallel-arrangement dual stator

2. Course of Content Introduction Literature Review Work done/ Methodology Result Conclusion Reference

3. Introduction A piezoelectric actuator is a device that uses piezoelectric effects to convert electrical energy into mechanical displacement. Widely used in precision positioning applications. Key advantages include low power consumption, high positioning resolution, rapid response. Types of Piezoelectric Actuators - Resonant Actuators and Non-Resonant Actuators .

4. Literature Review Paper Name Author Name Journal Year Review in Brief Design and experimental evaluation of a novel stepping linear piezoelectric actuator Weishan   ChenYuyang  Liu   Yingxiang  Liu Sensors and Actuators A: Physical 2018 An equivalent model is developed to calculate the clamping force. by converting the relevant structures into springs with specific elastic coefficients, which are determined through finite element method (FEM) analysis Design and Analysis of a Dual-Stator Piezoelectric Linear Actuator Hao Yun, Deqing Kong, Manabu Aoyagi Precision Engineering 2022 This study develops a non-resonant piezoelectric linear actuator with a parallel-arrangement dual-stator design to achieve large stroke, smooth motion with minimal wear, and high positioning. resolution.

5. 5 Methodology 1 . Structure Design Fig. 1 The proposed dual-stator actuator. (a) Structure and dimension of the stator. (b) One of the schematic diagrams of the proposed actuator.[1]

6. 2. Operating Principle The dual-stator actuator is built upon the single-stator structure. A simplified geometric model of a half-parallel compliant mechanism is used to analyze the driving foot's motion trajectory. Fig 2. Simplified geometric model of a half-parallel compliant mechanism. [3]

7. The motion displacements are calculated using the relationships between points, with Δx and Δy derived through geometric relationships. The elliptical motion of the driving feet can be split into components parallel and perpendicular to the slider motion. This elliptical motion allows the sliders to achieve large-stroke linear movement when repeated cyclically.

8. Co-Drive Mode of the Dual-Stator Actuator Fig. 3. Co-drive mode. (a) Sinusoidal voltage signals. (b) Dual stator. [2]

9. Result Fig.4. Finite element mesh model of the stator and its boundary conditions. [3]

10. Fig 5. Simulation results of y-directional displacement and maximum equivalent stress. (a) Previous structure. (b) Optimized structure. [3]

11. The actuator operates stably at frequencies between 300 and 1000 Hz, with the no-load speed of the sliders increasing as the driving frequency increases. Fig.6. Relationship between the no-load speed of the sliders and the driving frequency under the co-drive mode.[3] Table 1 Comparison between some previous actuators and this work. [1] [2] [3] [4]

12. Conclusion The proposed actuator with a parallel-arranged dual stator exhibits improved speed, thrust, and positioning accuracy compared to traditional actuators. Suitable for precision positioning tasks like adjusting the aperture of scanning electron microscopes and 3D printer nozzles.

13. Reference [1] Huang H, et al. A low frequency operation high speed stick-slip piezoelectric actuator achieved by using a L-shape flexure hinge. Smart Mater Struct 2021;29: 065007. [2] Li JP, et al. A walking type piezoelectric actuator with two umbrella-shaped flexure mechanisms. Smart Mater Struct 2020;29:085014. [3] Li JP, Huang H, Zhao HW. A piezoelectric-driven linear actuator by means of coupling motion. IEEE Trans Ind Electron 2017;65:2458–66. [4] Qin F, et al. Design and stepping characteristics of novel stick–slip piezo-driven linear actuator. Smart Mater Struct 2019;28:075026. [5] Li PZ, Wang XD, Zhao L, Zhang DF, Guo K. Dynamic linear modeling identification . [6] Development of a multi-drive-mode piezoelectric linear actuator with parallel-arrangement dual stator Hao Yun, Deqing Kong, Manabu Aoyagi .