A T-shape linear piezoelectric motor with single foot

Area of Science:

• Mechanical Engineering
• Materials Science
• Electrical Engineering

Background:

• Piezoelectric motors offer precise motion control.
• Developing compact and efficient piezoelectric motor designs is crucial for miniaturization.

Purpose of the Study:

• To propose and analyze a novel T-shape piezoelectric motor.
• To investigate the hybrid vibration mechanism for generating elliptical motion.
• To evaluate the performance characteristics of the fabricated prototype.

Main Methods:

• Design and analysis using Finite Element Method (FEM).
• Modal analysis to tune resonance frequencies.
• Transient analysis to observe tip motion trajectory.
• Experimental measurement of vibration and mechanical output.

Main Results:

• A T-shape piezoelectric motor prototype was fabricated.
• The motor generates elliptical motion on the driving tip.
• No-load speed reached 718 mm/s with a maximum thrust force of 3.5 N at 53.1 kHz.
• The motor demonstrated a simple structure and high power-to-weight ratio.

Conclusions:

• The proposed T-shape piezoelectric motor is a viable solution for applications requiring compact and efficient actuation.
• The hybrid vibration approach effectively generates the desired elliptical motion.
• The design facilitates miniaturization and ease of fabrication.