Huang Jiahan, Sun Dong
School of Mechatronics Engineering, Foshan University, Foshan 528225, China.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Micromachines (Basel). 2020 Jul 16;11(7):689. doi: 10.3390/mi11070689.
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.
随着超声波电机应用的增加，有必要对其环境适应性提出更高要求。冲击作为一种极端环境，在武器系统、机械和航空航天领域广泛存在。然而，关于冲击对超声波电机影响的报道很少。本文旨在研究超声波电机在冲击环境下性能退化的原因及失效机理。首先，建立有限元模型以观察超声波电机在冲击环境下的动态响应。同时，讨论电机性能退化的原因。进行冲击实验以测试冲击对超声波电机的影响，包括对超声波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波电机的保护作用。本文揭示了超声波电机在冲击环境下的失效机理，为提高超声波电机的抗冲击性能提供了依据。
