Note: Performance estimation of a rotary ultrasonic motor based on two-dimensional analytical model

Area of Science:

• Robotics and Control Systems
• Mechanical Engineering
• Materials Science

Background:

• Intelligent motion control relies on understanding ultrasonic motor performance relative to input parameters.
• Accurate performance estimation is vital for developing advanced rotary ultrasonic motors.

Purpose of the Study:

• To develop and validate a performance estimation model for a novel rotary ultrasonic motor.
• To analyze motor performance as a function of input parameters for enhanced control.

Main Methods:

• Utilized finite element software to derive stator surface vibration displacements.
• Analyzed time-domain output displacements to determine contact states and durations.
• Constructed a two-dimensional analytical model to deduce steady rotation speed and stall torque.

Main Results:

• The performance estimation model accurately predicted rotary ultrasonic motor speed and stall torque.
• Simulation results showed strong agreement with experimental data from a prototype motor.
• Validated the effectiveness of the developed analytical and simulation-based model.

Conclusions:

• The presented performance estimation model is effective for novel rotary ultrasonic motors.
• The model provides a reliable method for predicting motor performance based on input parameters.
• This research contributes to the advancement of intelligent motion control systems.