Title :
Magnet circuit optimization design of giant magnetostrictive actuator
Author :
Liu Dehui ; Quanguo, Lu ; Yuyun, Zhen
Author_Institution :
Sch. of Mech. Eng., Nanchang Inst. of Technol., Nanchang, China
Abstract :
To optimize the electromagnetic performance of giant magnetostrictive actuator(GMA), equivalent magnet circuit equation was proposed, and effects of magnetic circuit components, gap¿s magnetic permeability and the evenness of driving magnetic field on the magnetic field characteristics were analyzed based on the equation. the driving coil¿s structure was designed, and its shape was optimized based on G-factor; with the electromagnetic field analysis function available in ANSYS program, several different magnetic circuits and their field distribution are analyzed. As a result, a kind of magnetic circuit structure with more even magnetic field is found out. The actuator prototype was made and tested, and result shows the optimal method proposed in the paper can greatly improve performance of GMA.
Keywords :
actuators; equivalent circuits; g-factor; giant magnetoresistance; magnetic circuits; magnetic permeability; ANSYS program; G-factor; driving coil; electromagnetic field analysis function; giant magnetostrictive actuator; magnet circuit optimization design; magnetic permeability; Actuators; Circuit optimization; Design optimization; Differential equations; Electromagnetic analysis; Electromagnetic fields; Magnetic analysis; Magnetic circuits; Magnetostriction; Performance analysis; Driving coil; Evenness of magnetic field; G-factor; Giant Magnetostrictive Actuator; Magnetic circuit;
Conference_Titel :
Computer-Aided Industrial Design and Conceptual Design, 2008. CAID/CD 2008. 9th International Conference on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-3290-5
Electronic_ISBN :
978-1-4244-3291-2
DOI :
10.1109/CAIDCD.2008.4730658
