Wide-temperature-range and low-loss piezoelectric and friction functional materials of ultrasonic motor

Rui-hong LIANG; Gai ZHAO; Ning CHEN; Song LI; Xiao-rong LU; Zheng-ran CHEN

doi:10.3788/OPE.20202804.0771

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Wide-temperature-range and low-loss piezoelectric and friction functional materials of ultrasonic motor

Novel Functional Materials and High-precision Measurement and Control of Ultrasonic Motors | 更新时间：2020-08-13

- Wide-temperature-range and low-loss piezoelectric and friction functional materials of ultrasonic motor
- Optics and Precision Engineering Vol. 28, Issue 4, Pages: 771-781(2020)
- 作者机构：
  
  1.中国科学院上海硅酸盐研究所，上海 201899
  2.南京航空航天大学航空学院，江苏南京 210016
  3.国防科技大学智能科学学院，湖南长沙 410073
  4.中国科学院兰州化学物理研究所，甘肃兰州 730000
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20202804.0771
  CLC： V254.2; TH117.3
- Received：04 March 2020，
  
  Revised：12 March 2020，
  
  Accepted：12 March 2020，
  
  Published：15 April 2020
- 稿件说明：
移动端阅览
Rui-hong LIANG, Gai ZHAO, Ning CHEN, et al. Wide-temperature-range and low-loss piezoelectric and friction functional materials of ultrasonic motor[J]. Optics and precision engineering, 2020, 28(4): 771-781.
DOI：

Rui-hong LIANG, Gai ZHAO, Ning CHEN, et al. Wide-temperature-range and low-loss piezoelectric and friction functional materials of ultrasonic motor[J]. Optics and precision engineering, 2020, 28(4): 771-781. DOI： 10.3788/OPE.20202804.0771.

摘要

为了提高超声电机的环境适应性与能量转换效率，本文分析并制造了宽温域低损耗的新型压电材料与摩擦功能材料，提出了通过相结构调控、增加第三组元、引入偶极子缺陷钉扎畴壁等手段制备宽温域低损耗压电陶瓷材料的设计与制造方法；为了提高超声电机摩擦界面能量传递效率及环境适应性，设计了具有高摩擦系数、低磨损率且耐高温的聚酰亚胺复合材料。结果表明，与传统材料相比，新型压电陶瓷材料具有低介电损耗、高机械品质因数及高温度稳定性的优势，使超声电机的能量转换效率提高3.3%，而新型聚酰亚胺基摩擦材料在摩擦系数、耐磨性以及温度范围等指标上均有明显提高，使电机的最大效率提高了6.19%。综合两种新型材料后，超声电机的最大效率提升了13.6%，可靠工作温度从-40~70 ℃提升至-60~120 ℃。本文提出的压电与摩擦功能材料既增强了超声电机的环境适应性，也改善了电机输出性能，对超声电机在航空航天等高端装备中的应用具有重要的意义。

Abstract

In order to improve the environmental adaptability and energy conversion efficiency of ultrasonic motors

a novel piezoelectric and friction material with good temperature stability and low dielectric loss was been prepared and studied systematically in this paper. A new piezoelectric material was proposed based on the results of phase structure modulation

introducing of third end-member

introducing dipole defects to pin domain walls. In order to improve the energy transfer efficiency and environmental adaptability of the friction interface of ultrasonic motor

a novel polyimide composite material with high friction coefficient

low wear rate and high temperature resistance was designed. Finally

in the assembly of the ultrasonic motor

the piezoelectric and friction functional materials proposed in this paper are applied. The results show that the new piezoelectric ceramic materials have the advantages of low dielectric loss

high mechanical quality factor and high temperature stability compared with traditional materials. To be specific

the energy conversion efficiency of the ultrasonic motor increased by 3.3%. The new polyimide friction materials have significantly improved the friction coefficient

wear resistance and temperature range

which increased the maximum efficiency value of the ultrasonic motor by 6.19%. Moreover

after integrating the two new materials

the maximum efficiency value of the ultrasonic motor has increased by 13.6%

and the usage temperature range has increased from -40-70 ℃ to -60-120 ℃.The piezoelectric and friction functional materials proposed enhance the environmental adaptability of the ultrasonic motor and improve the output performance of the motor in this paper

which is of great significance for the application of ultrasonic motors in the equipment for aerospace and other high-end fields.

关键词

Keywords

references

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