大射电望远镜馈源支撑系统最优化研究

Study on the Optimization of the Feed Support System of Large Aperture Spherical Radio Telescope

以输电线路钢塔设计理论为基础,阐述了大射电望远镜馈源支撑系统的最优化原理,提出了相应的最优化目标函数。将遗传算法求复杂函数极值理论与三维数字仿真技术相结合,采用VC++编程语言开发馈源n塔支撑最优化系统。对大窝凼候选台址支撑系统最优化实例研究结果表明,多塔支撑系统的受力状况优于少塔支撑系统,但工程投资较大,建议大射电望远镜馈源支撑系统采用4塔支撑系统。

Based on the design theories of steel tower for electric transmission line, an optimization principle of the feed support system of large aperture spherical radio telescope is discussed, and the optimization target functions of the feed support system are advanced in this paper. Then, combining with a genetic algorithm of extremum for complicated functions and a digital three dimension simulation technique, an optimization system for the feed support system is programmed by VC ＋ ＋ language. The study of a case, the optimization of the feed support system in the planned Dawodang site, shows that the applied forces on a support system with many towers are more reasonable than that on a support system with few towers, but the project investment of support system with many towers is greater, Therefore, a 4 - tower support system is suggested for the feed support system of large aperture spherical radio telescope.