|
Wang Chuanli
Ding Fan
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou 310027, China
Zhang Yongshun
School of Mechanical Engineering,
Dalian University of Technology,
Dalian 116024, China
Li Qipeng
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou 310027, China |
|
|
GIANT
MAGNETOSTRICTIVE
ACTUATOR IN SERVO VALVE AND
MICRO PIPE ROBOT*
Abstract: Performance of giant magnetostrictive material (GMM) is introduced. Principle of work, basic structure and key techniques of giant magnetostrictive actuator (GMA) are analyzed. Its dynamic models of magneto-mechanical coupling are established. The structure and principle of the pneumatic servo valve and the micro pipe robot with new homemade GMM are presented. The experiment is carried out under typical working conditions. The experiment results show that the GMM pneumatic servo valve has wide pressure control characteristics, good linearity, and fast response speed. The movement principles of the GMM robot system are reliably feasible and its maximal moving speed is about 8 mm/s. It is preferable to the driving frequency of the robot within 100~300 Hz.
Key words:
Giant magnetostrictive Actuator Servo valve Micro pipe robot |