Title :
A micro-position system of a giant magnetostrictive actuator
Author :
Cao, S.Y. ; Zheng, J.J. ; Wang, B.L. ; Huang, W.M. ; Wen, Lijie ; Wang, B.W.
Author_Institution :
Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China
Abstract :
In this paper, a micro-position system is proposed and developed. This newly developed micro-position system contains a giant magnetostriction actuator (GMA), a digital control constant current source, a TMS320C31-based digital signal processor (DSP) position control board and a capacitive sensor. The digital control constant current source can be adjusted continuously from 0 A to 1.551 A and its resolution is up to 0.3788 mA. This micro-position system has good stability and high anti-noise ability, and can achieve 40 nm position resolution because of using the high precision capacitive sensor, the newly developed digital control constant current source and the TMS320C31-based DSP position control board.
Keywords :
capacitive sensors; digital control; digital signal processing chips; electric actuators; electric current control; magnetostrictive devices; micropositioning; power engineering computing; 0 to 1.551 A; 40 nm; DSP; GMA; TMS320C31; capacitive sensor; constant current source; digital control; digital signal processor; giant magnetostrictive actuator; microposition system; position control board; Actuators; Capacitive sensors; Digital control; Digital signal processing; Magnetic field induced strain; Magnetic materials; Magnetostriction; Position control; Signal resolution; Solenoids;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202983
