Micro-Displacement Positioning of Giant Magnetostrictive Actuator

Abstract:

Giant magnetostrictive materials have a broad potential application in aviation and aerospace field owing to its good properties. The actuators made of the materials show excellent performance which makes them a good choice for precision positioning. This paper presents a micro-displacement positioning system of the giant magnetostrictive actuator (GMA). The structure of the system and its control method are described. In order to achieve the steady micro-positioning characteristics, the adjustment process of the system based on the control algorithm of Programmable Multi-axis Controller (PMAC) was researched. The response time of the GMA was less than 1 ms which was shown in the step response curve. Relatively large displacement (5~20 µm) positioning and micro-displacement (0.9~3 µm) positioning were achieved with the average positioning systematical errors of less than 0.5 µm.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 146-151
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.146
• Online since: February 2013
• Authors: Lin Lin Liu, Tian Li Zhang, Heng Zhang, Cheng Bao Jiang
• Keywords: Giant Magnetostrictive Actuator (GMA), Micro-Displacement, Positioning, Programmable Multi-Axis Controller (PMAC)

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