Title :
Modeling and control method study of magnetostrictive micropositioner and its application
Author :
Tang, Zhifeng ; Xiang, Zhanqin ; Lv, Fuzai
Author_Institution :
Modern Manuf. Eng. Inst., Zhejiang Univ., Hangzhou, China
Abstract :
The design and implementation of a micropositioner system based on GMA (giant magnetostrictive actuator) are present. Dynamic modeling and transfer function of the micropositioner are built up. The digital controller for milling a cutting workpiece with noncircular cross section is also discussed. Experiment and computer simulation show that VSC (variable structure control) method has more advantage than the PID control method for the micropositioner. Experiment data state that 2μm precision in noncircular cutting could be attained by using the micropositioner to manipulate the tool position. Rapid response, accurate position and strong force make the magnetostrictive micropositioner would have prospective applications in noncircular machining fields.
Keywords :
digital control; magnetostrictive devices; microactuators; micropositioning; milling; transfer functions; variable structure systems; 2 mum; digital controller; giant magnetostrictive actuator; magnetostrictive micropositioner; milling; noncircular cross section; noncircular machining fields; transfer function; variable structure control; Actuators; Application software; Computer simulation; Digital control; Machining; Magnetic variables control; Magnetostriction; Milling; Three-term control; Transfer functions;
Conference_Titel :
Systems, Man and Cybernetics, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8566-7
DOI :
10.1109/ICSMC.2004.1401206