大射电望远镜双Stewart平台的馈源精定位控制

Attitude Control of the Feed Source of a Large Spherical Radio Telescope Composed of Two-Stewart-Platform

研究了大射电望远镜(FAST)馈源的精确定位问题。提出了利用ADRC控制技术来调节与塔柱相连的六根钢索和Stewart平台的六根杆的长度,从而使馈源的实际位姿跟踪馈源的理想位姿,数字仿真表明了该方案的可行性。

This paper is devoted to the problem of attitude control of the feed source of a large spherical radio telescope. Based on a unique active disturbance rejection (ADRC) method, the lengths of six large-span cables and six electrical linear actuators are regulated to track the ideal trajectory of cabin structure and feed source, respectively. Finally, an illustrative example is given to demonstrate the effectiveness of the proposed method.