Public Foundational Courses Department, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Ultrasonics. 2022 Dec;126:106822. doi: 10.1016/j.ultras.2022.106822. Epub 2022 Aug 17.
Ultrasonic motor relies on interface friction to drive the slider movement. During continuous operation, the contact surfaces between the stator and slider are worn, which will affect the performance and service life of the motor. A novel wear evaluation model considering temperature effect is established to estimate the remaining life and performance for a linear piezoelectric ultrasonic motor. The interactions of temperature with resonance frequency and material parameters are considered. The relationship between wear volume and preload as well as the variations of surface roughness parameters are taken into account. An experimental platform is built to identify the critical parameters and verify the accuracy of this model. The results show that the developed model can not only predict the temperature and service life, but also evaluate the performance of the motor, which can provide valuable guidance for motor design and optimization.
超声马达依靠界面摩擦力来驱动滑块运动。在连续运行过程中，定子和滑块之间的接触面会磨损，这会影响电机的性能和使用寿命。建立了一种考虑温度效应的新型磨损评估模型，用于估计线性压电超声电机的剩余寿命和性能。考虑了温度与共振频率和材料参数的相互作用。考虑了磨损量与预紧力之间的关系以及表面粗糙度参数的变化。建立了一个实验平台来识别关键参数，并验证该模型的准确性。结果表明，所开发的模型不仅可以预测温度和使用寿命，还可以评估电机的性能，为电机的设计和优化提供有价值的指导。
