Parameter optimization of jet-pipe servovalve driven by giant magnetostrictive actuator

被引：0
|
作者：
Li, Yuesong [1 ]
Zhu, Yuchuan [1 ]
Wu, Hongtao [1 ]
Tian, Yisong [2 ]
Niu, Shiyong [2 ]
机构：
[1] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
[2] Flight Automatic Control Research Institute, Xi'an 710065, China
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2011年 / 32卷 / 07期
关键词：
Finite element method - Actuators - Magnetostrictive devices;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In order to improve the performance of a jet-pipe servovalve, a novel direct drive jet-pipe servovalve driven by a giant magnetostrictive actuator is proposed in this paper. By means of magnetic field finite element analysis, a model of the giant magnetostrictive actuator is established. The influence of coil structure on actuator displacement is analyzed and the experimental curves of the designed actuator are given. On the basis of the designed jet-pipe servovalve and taking the maximum energy transfer efficiency as the optimization objective, an equation is built between the jet parameters and jet efficiency. The best jet structure parameters of the designed servovalve are worked out, and its static characteristics are analyzed with the help of a flow field analysis software. The results show that its null dimensionless pressure gain is 1.7 mm-1, and the null dimensionless flow gain is 1.9 mm-1.
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页码：1336 / 1344
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