Study on Modeling and State Estimation of Ultrasonic Motor Based on Data Driving

Control of ultrasonic motor requires high accuracy of the mathematical model, and their states estimation requirements are also increasing. Only on this basis can the control be performed under high-performance indicators. In this paper, using the basic ideas of data-driven, a discrete-state model is established for a kind of standing-wave ultrasonic motor by using a nonlinear time series modeling method. And on this basis, a state estimation study is performed. Experiments show that the application of data-driven modeling method can establish a high-precision motor mathematical model. The motor state is estimated based on it. Meanwhile, it can provide a good condition for ultrasonic motor control accurately and efficiently.