Dissertation > Excellent graduate degree dissertation topics show

Low Voltage Driving Ultrasonic Motors Based on Multilayer Piezoelectric Ceramics

Author: MengXiangYu
Tutor: ZuoXiangCheng
School: Tsinghua University
Course: Materials Science and Engineering
Keywords: Co-firing multilayer piezoelectric ceramic Ultrasonic motor Standing wave Travelling wave Finite element analysis
CLC: TM359.9
Type: Master's thesis
Year: 2010
Downloads: 68
Quote: 0
Read: Download Dissertation

Abstract


The development of aerospace, microelectronics, optoelectronics, and high-tech weapons requires high performance of motors. Traditional electromagnetic motors can not meet the needs. These areas call for a new generation of motors. Piezoelectric ultrasonic motor with high efficiency, simple structure, and miniaturization has been rapidly developed in the past two decades and has many successful applications. However, ordinary ultrasonic motor has high driving voltage, so that the system must be complex, even needs transformers which limits the development of ultrasonic motors. Therefore, lower driving voltage, simple structure has been focused.This thesis has designed, fabricated and tested a new ultrasonic motor with low driving voltage based on multilayer piezoelectric ceramic. Use a disk-type structure through the stator tooth and rotor surface to drive. The spring provides preload between them. Four multi-layer piezoelectric ceramics serve as the actuator. The vibration is tested using the Doppler Laser Vibration Testing method. B（0,3） and B（0,2） were chosen the best work for the motor mode.Piezoelectric ceramic is prepared using the dry trapping technology, and Pb(Mg1/3Nb2/3)O3-Pb(Ni1/3Nb2/3)O3-Pb（ZrTi）O3 low co-firing ceramic powder. The structural parts use CNC techniques with CAD drawing and output tools. Use the standard 59Cu for metal parts. Preparation of test batches of motors were optimized, the final stator motor made of high 1mm, disc thickness 0.3mm, and the overall size ofφ9mm×16mm. Using laser Doppler Vibrometer tests the mode of stator surface vibration spectrum, and then get the motor vibration mode and its resonant frequency. Experiments show that the test result matches the theoretical design well. Pre-pressure, voltage and other factors have effect on the output torque. Experiments show that the motor with no load can drive under 5Vp-p, and can be obtain the best output torque at 1.8N and 15Vp-p. The best output torque is 1.2mNm. Experts group and patented searching shows that the structure with low driving voltage of 5Vp-p performs to a leading level.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  5. Design of Testing Equipment for Electronic Products,TN06
  6. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  7. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  8. Sham hose drum drive means and hydraulic system of the structure,TE973
  9. Frequency Doubling with PPKTP Crystal at the Fundamental Wave of 795nm （Rubidium D1 Transition）,O437.1
  10. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  11. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  12. Design and Analysis of Automatic Steel Pipes Butt Tool,U673.38
  13. Analysis on Unloading of Large Span Steel Structures and Research on Its Mechanical Analysis,TU391
  14. Simulation of the Clinching Process Using FEA Method with Steel and Aluminum Alloy Sheets for Automotive Sunroof Frame,U463.83
  15. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  16. The Design of Telescopic Asphalt Spraying System,U415.524
  17. Development of Post-process System in Sheet Metal Simulation Based on SolidWorks,TP391.72
  18. Failure Analysis and Structural Optimization of the Typical Fine Blanking Punch,TG385.2
  19. The Structure Design of 2000kN Servo Press for Hot Forming,TG385
  20. Al Wire Bonding Failure and Automatic Optical Inspection on Power Device Leadframe,TG441
  21. Simulation Analysis and Experimental Study on Hysteretic Behavior of High-performance Shear Panel Damper,TU352.1

CLC: > Industrial Technology > Electrotechnical > Motor > A special motor > Other
© 2012 www.DissertationTopic.Net  Mobile