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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Dynamic modeling and analysis of a bimodal ultrasonic motor
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Dynamic modeling and analysis of a bimodal ultrasonic motor

机译：双峰超声电机的动力学建模与分析

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摘要

A dynamic model that includes four subsystems is developed to analyze the fundamental characteristics of a bimodal ultrasonic motor. The first subsystem is the driving circuit designed for the motor to achieve bidirectional motion. The stator is modeled as a Timoshenko beam, and the assumed mode energy method is used to obtain the dynamic equations. The normal interface force is represented by an elastic spring existing in between the tip of the stator and the moving platform. The interface forces are coupled into the dynamic formulations of the stator and the moving platform. The behavior of the force transmission between the stator and the moving platform are analyzed using the developed model. Transient and steady-state responses of the system are obtained by numerical simulation, and the results are validated by experiments. Furthermore, the existing of a nonlinear deadzone is predicted analytically, and the causes of this nonlinearity are clarified.
机译：建立了一个包含四个子系统的动力学模型，以分析双峰超声电机的基本特性。第一个子系统是为电机实现双向运动而设计的驱动电路。将定子建模为Timoshenko梁，并使用假定的模式能量方法获得动力学方程。法向界面力由存在于定子尖端和移动平台之间的弹性弹簧表示。界面力被耦合到定子和移动平台的动态公式中。使用开发的模型分析了定子和移动平台之间的力传递行为。通过数值模拟获得了系统的瞬态和稳态响应，并通过实验验证了结果。此外，通过分析预测了非线性死区的存在，并阐明了这种非线性的原因。

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