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针对110m超大口径全可动高精度反射面天线自重与造价的问题,本文提出了一种全新的设计方案,与常规方案相比,自重、驱动功率与造价可分别降低1/2,2/3与1个量级.首先,提出了超轻的预应力索-桁结构代替传统笨重的刚梁背架结构.其次,提出了新型并联伺服机构代替传统的方位-俯仰扫描机构.再者,基于模块化的设计思想建立了与创新结构相适应的优化模型.最后,将提出的方案应用于数值算例和某26 m口径的实际天线中,得出的结果验证了方案与方法的正确性与有效性.同时,该方案对其他装备设计也有一定的参考价值.
Aiming at the problem of weight and cost of 110m ultra-large caliber fully-movable high-precision reflector antenna, a new design scheme is proposed in this paper. Compared with the conventional scheme, the weight, driving power and cost can be reduced by 1 / 2,2 / 3 And one order of magnitude.Firstly, an ultra-light prestressed cable-truss structure was proposed to replace the traditional bulky rigid-frame structure.Secondly, a new parallel servo mechanism was proposed to replace the traditional azimuth-pitch scanning mechanism.Furthermore, The modular design concept builds an optimization model that fits with the innovation structure.Finally, the proposed scheme is applied to a numerical example and an actual antenna with a diameter of 26 m. The obtained results verify the correctness of the scheme and method and Effectiveness at the same time, the program on other equipment design also has some reference value.