Performance Analysis of a Travelling-Wave Ultrasonic Motor under Impact Load
Performance Analysis of a Travelling-Wave Ultrasonic Motor under Impact Load
复制标题
行波超声波电机冲击载荷下的性能分析
DOI：
10.3390/mi11070689
复制
发表时间：
2020-07-01
期刊：
影响因子：
3.4
通讯作者：
Sun, Dong
中科院分区：
文献类型：
--
作者：
Huang, Jiahan;Sun, Dong
随着超声波电机应用的日益广泛，对超声波电机的环境适应性提出了更高的要求。冲击作为一种极端环境，广泛存在于武器系统、机械和航空航天领域。然而，关于冲击对超声波电机的影响的报道很少。本文旨在研究超声波电机在冲击环境下性能下降的原因和失效机理。首先，建立了超声电机的有限元模型，观察了超声电机在冲击环境下的动态响应。同时，对电机性能下降的原因进行了分析。通过冲击实验测试了冲击对超声电机的影响，包括对电机机械特性和定子振动特性的影响。此外，通过实验方法验证了橡胶在冲击环境下对超声电机的保护作用。揭示了超声电机在冲击环境下的失效机理，为提高超声电机的抗冲击性能提供了依据。
With the increased application of ultrasonic motors, it is necessary to put forward higher demand for the adaptability to environment. Impact, as a type of extreme environment, is widespread in weapon systems, machinery and aerospace. However, there are few reports about the influence of impact on an ultrasonic motor. This article aimed to study the reasons for the performance degradation and failure mechanism of an ultrasonic motor in a shock environment. First, a finite element model is established to observe the dynamic response of ultrasonic motor in a shock environment. Meanwhile, the reasons of the performance degradation in the motor are discussed. An impact experiment is carried out to test the influence of impact on an ultrasonic motor, including the influence on the mechanical characteristic of an ultrasonic motor and the vibration characteristic of a stator. In addition, the protection effect of rubber on an ultrasonic motor in a shock environment is verified via an experimental method. This article reveals the failure mechanism of ultrasonic motors in a shock environment and provides a basis for the improvement of the anti-impact property of ultrasonic motors.