Exploring the Mechanism of Friction and Wear of Ultrasonic Motors.

1.试验用摩擦材料的制备。(1)工程塑料和陶瓷。碳纤维增强塑料、Al_2O_3、Si_3N_4、SiC和ZrO_2)2.超声波电机用摩擦材料的磨损试验。(1)磨损试验机测量磨损。磨损试验用超声电机的研制(1)采用混合式换能器超声电机进行磨损试验。磨损仿真模型和磨损评估。(1)对实际磨损量和模拟值进行了比较和评价。(2)发现了摩擦材料的两种磨损特性。(3)我们的仿真模型可以用于粗略估计摩擦材料的寿命。(4)我们的仿真可以适用于多种类型的超声波电机和多种类型的摩擦材料。真空条件下的摩擦磨损试验。(1)真空条件下的磨损试验。(2)找到了较好的真空条件组合。滑动表面润滑剂的使用(1)润滑剂可以改善超声电机的摩擦磨损特性。(2)获得了较高的驱动效率。

1. Preparation of friction materials for the test.(1) Engineering plastics and Ceramics. (Carbon-fiber-reinforced-plastics, Al_2O_3, Si_3N_4, SiC and ZrO_2)2. Testing the wear of the friction materials used for the ultrasonic motors.(1) Wear was measured by the wear testing machine3. Fabrication of the ultrasonic motor for the wear test(1) A hybrid transducer type ultrasonic motor was used for the wear tests.4. The wear simulation model and the wear evaluation.(1) Measured wear volumes and simulated values were compared and evaluated the results.(2) Two types of wear characteristics for the friction materials were found.(3) Our simulation model can be used for the rough estimation of the life of friction materials.(4) Our simulation may be applicable for many types of ultrasonic motors and many types of friction materials.5. Friction and wear test in vacuum.(1) Wear test was curried out in vacuum environment.(2) Relatively good combination for vacuum was found.6. Lubricant usage on the sliding surfaces(1) Lubricant can be used to improve friction and wear characteristics of the ultrasonic motor.(2) High driving efficiency was obtained.