|
|
|
| Electromechanical Coupling Optimization Design of Large Reflector Antennas with Truss Support Structures |
| Li Peng,Yang Dong-wu,Wang Wei,Zheng Fei |
| Research Institute on Mechatronics, Xidian University, Xi’an 710071, China |
|
|
|
|
Abstract for the problem of electromechanical in the optimization design of reflector antennas with truss support structures, microscopic distortion of reflector surface is introduced in the formula of antenna’s far field patterns by phase difference, and the coupling formula of reflector antennas’ far field patterns is given. Results of verification experiment show that the coupling formula is accurate and efficient. By the coupling formula, electrical parameter could be included in the antenna structure optimization design. A mechatronic optimization design model of reflector antennas with truss support structures is developed ,which adopts antenna weight or gain as the optimization objective, and the structure strength and various electrical parameters as constraint conditions. So the main electrical parameters(include gain, side lobe, beam width and pointing accuracy) could be considered during structure optimization design, and the limitation of estimate gain only by surface precision is conquered. Finally the proposed optimization model is applied to an 8 meters antenna with good results.
|
|
Received: 24 December 2008
|
|
|
|
Corresponding Authors:
Li Peng
|
|
|
|
|
|
|
2010, Vol. 32 
