Year: 2025
Type: article
Abstract: This paper presents a novel motion platform based on a π-shaped linear ultrasonic motor. Initially, a new preload device was designed in accordance with established criteria for high-power linear ultrasonic motors. Mounted on the base structure, this mechanism neither interferes with the stator's high-frequency vibrations nor couples with the mover's motion. Structural parameters were determined through theoretical modeling, while experimental validation confirmed the mechanism's capability to deliver stable and appropriate preload throughout the motor's complete operating cycle, thereby enhancing the platform's operational stability and positioning accuracy. Subsequently, a novel mover was developed by replacing linear guides with a ceramic-ceramic mechanism. This mover features a compact structure and flexible design, facilitating both miniaturization and effective stroke amplification. The resulting platform achieves a 40% reduction in volume compared to conventional designs while extending the stroke to 150% of the original capacity. Finally, a prototype was fabricated and experimentally evaluated. Test results demonstrate output velocities exceeding 200 mm/s in both directions, with positioning accuracy reaching 1.1 μm.
Source: Micromachines
DOI: 10.3390/mi16091039
Institutions: Guangdong Polytechnic Normal University, Ji Hua Laboratory
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,534
OpenAlex ID: W4414091558