Research of Fast-Response Giant Magnetostrictive Actuator for Space Propulsion System

2011 ◽  
Vol 39 (2) ◽  
pp. 744-748 ◽  
Author(s):  
Liyi Li ◽  
Chengming Zhang ◽  
Baiping Yan ◽  
Lu Zhang ◽  
Xiaopeng Li
Keyword(s):  
Fast Response ◽  
Propulsion System ◽  
Space Propulsion ◽  
Magnetostrictive Actuator

scholarly journals Modelling of an Electromagnetic Space Propulsion System for Pulse Mode Operation

2012 ◽  
Vol 38 ◽  
pp. 3691-3699
Author(s):  
S. Sarathkumar ◽  
K. Periyannaswamy ◽  
S. Thanigaiarasu
Keyword(s):  
Pulse Mode ◽  
Propulsion System ◽  
Space Propulsion ◽  
Mode Operation

Giant Magnetostrictive Actuator and Its Application in Active Vibration Control

2005 ◽  
Vol 475-479 ◽  
pp. 2089-2094
Author(s):  
Hui Bin Xu ◽  
Tian Li Zhang ◽  
Cheng Bao Jiang ◽  
Hu Zhang
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Fast Response ◽  
Coupling Factor ◽  
Output Displacement ◽  
Output Force ◽  
Magnetostrictive Actuators ◽  
Active Vibration ◽  
Magnetostrictive Actuator ◽  
Static Output

TbDyFe is a rare earth-iron magnetostrictive alloy with “giant” magnetostrain, good magnetomechanical coupling factor and fast response. Giant magnetostrictive actuators (GMAs) are designed and fabricated with home-made TbDyFe rods. Their magnetostrain properties under varied operation are tested. The static output displacement up to 100μm and output force up to 1500N were obtained. The dynamic displacement increases with amplitude under fixed frequency and decreases with frequency under fixed amplitude generally. The maximum dynamic output displacement of 146µm was obtained at natural frequency around 5Hz. Active vibration control employing GMA was implemented in the flexible structure. The excellent damping effect, 20-30 dB under the frequency range from 10Hz to 100Hz was obtained. The dynamic phase delay of GMA has been analyzed. A novel improved FSLMS algorithm is proposed to achieve a better control performance.

The Design of Giant Magnetostrictive Flow Valve and its COMSOL Simulation

2010 ◽  
Vol 160-162 ◽  
pp. 1146-1150 ◽  
Author(s):  
Pei Chen ◽  
Quan Guo Lu ◽  
Ding Fang Chen ◽  
Kun Chen
Keyword(s):  
Fast Response ◽  
Flow Displacement ◽  
Magnetostrictive Strain ◽  
Valve Opening ◽  
Magnetostrictive Actuator ◽  
Comsol Simulation ◽  
Displacement Model ◽  
Large Flow ◽  
Pilot Valve ◽  
Flow Valve

By combining magnetostrictive actuator with flow valve directly, the flow was precisely controlled due to magnetic materials’ properties of fast response (less than 1μs)and large magnetostrictive strain (up to 1500ppm). The structure was designed based on this theory, and the flow - displacement model of valve was established by analyzing the size of the valve opening in different incentive current. The flow field was analyzed through multi-physics analysis software COMSOL. Simulation results showed that, the continuous adjustment and precision control were realized in a certain range of flow in the valve. Therefore, it could not only adjust the flow in micro amount directly, but also can be a pilot valve for high frequency precision large flow valve.

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