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| Electromechanical coupling dynamic model and active shape control of large cable-network antenna |
| Received:May 05, 2016 Revised:July 10, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201604023 |
| KeyWord:cable-network antenna electromechanical coupling dynamic model active shape control PZT actuator |
| Author | Institution |
| 寻广彬 |
1. 大连理工大学 工业装备结构分析国家重点实验室 航空航天学院, 大连 ;
2. 大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 吴志刚 |
1. 大连理工大学 工业装备结构分析国家重点实验室 航空航天学院, 大连 ;
2. 大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 彭海军 |
1. 大连理工大学 工业装备结构分析国家重点实验室 航空航天学院, 大连 ;
2. 大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 穆瑞楠 |
1. 大连理工大学 工业装备结构分析国家重点实验室 航空航天学院, 大连 ;
2. 大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 邬树楠 |
1. 大连理工大学 工业装备结构分析国家重点实验室 航空航天学院, 大连 ;
2. 大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
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| Abstract: |
| Due to the advantages of high stowing ability,lightweight mass and large aperture,cable-network antenna has become the first choice for many space missions.While its in-orbit performance is impacted by low shape accuracy of the reflector.In this paper,the PZT actuators are added in vertical tension cables of the cable-network antenna,and the shape accuracy is therefore improved via active shape control.Firstly,the elements of tensioning cable-network antenna was divided into two types,including active cable elements with actuators and passive cable elements without actuators.The dynamic model of active cable element was obtained through the piezoelectric constitutive equations,geometric equations and Hamilton's principle,and the electromechanical coupling dynamic model of cable-network antenna equipped with passive and active cable elements was then formulated.According to the initial shape error and the dynamic model of cable-network antenna,the control voltage profiles for actuators were then computed by a model predictive control (MPC) method.Finally,a numerical example of a 10 m-diameter cable-network antenna has been provided to verify the availability of the proposed dynamic model and the active shape control method. |
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