Design of Large-Stroke and High-Resolution Drive System Based on Giant Magnetostrictive Material

Autor: Meijun Xiong, Tian Xie, Chuanli Wang, Caofeng Yu
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Precision Engineering and Manufacturing. 22:799-811
ISSN: 2005-4602
2234-7593
Popis: A novel macro–micro linear actuator based on the giant magnetostrictive material has been proposed to achieve high precision and large-stroke. This structure uses a permanent magnet drive coil structure, and a new cylindrical structure permanent magnet linear actuator is made according to the principle of Lorentz force. The permanent magnet and the shell form stator part, and the giant magnetostrictive actuator (GMA) structure is embedded in the interior as a mover structure to achieve macro-motion displacement; the micro-motion can be realized by controlling the GMA. The micro-motion component and the macro-motion component can always remain coaxial in structure and integrated on a motor structure. The actuator’s output displacement can be adjusted by controlling the macro/micro coil current. Experimental results indicate that the macro-displacement can be up to 30 mm, and the response time is below 0.2 s. The micro-motion positioning accuracy can reach nanometer level, which has the advantages of simple structure and easy installation with coaxial, and has a broad application prospect in the field of precision manufacturing.
Databáze: OpenAIRE
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