| 拼接镜面望远镜位移促动器系统的自抗扰控制 |
| |
| 引用本文： | 李浩,张振超,李国平,杜福嘉,张惠.拼接镜面望远镜位移促动器系统的自抗扰控制[J].红外与激光工程,2019,48(2):218005-0218005(8). |
| |
| 作者姓名： | 李浩 张振超 李国平 杜福嘉 张惠 |
| |
| 作者单位： | 1.中国科学院国家天文台南京天文光学技术研究所,江苏 南京 210042; |
| |
| 基金项目： | 国家自然科学基金（U1331204）;国家重点基础研究发展计划（2015CB857100） |
| |
| 摘 要： | 针对拼接镜面望远镜主动光学控制技术的要求，设计了一种改进型自抗扰控制器以改善位移促动器系统的位置跟踪性能和提高抗扰动能力。首先，建立了拼接镜面位移促动器系统及扰动风载的数学模型；设计了改进型自抗扰控制器，并给出了控制器参数选择的方法。其次，对位移促动器控制系统进行了仿真分析，验证了控制器的可行性。最后，利用风载扰动模拟装置，在位移促动器系统中引入扰动，并对比改进型自抗扰控制器与线性自抗扰控制器以及PID控制器控制性能。实验结果表明，改进型自抗扰控制器系统阶跃跟踪的稳定时间为201 ms，稳态均方差为7.1 nm，无超调；风载干扰实验中，改进型ADRC的最大偏差值为38.8 nm，稳态均方差为7.6 nm，改进型ADRC的性能明显优于线性自抗扰控制器和PID控制器，对提高位移促动器系统的性能有较高的实用性。
|
| 关 键 词： | 拼接镜面望远镜 位移促动器 自抗扰控制 扩张状态观测器 跟踪微分器 |
| 收稿时间： | 2018-09-10 |
Active disturbance rejection control of position actuator system for segmented mirror telescope |
| |
| Affiliation: | 1.National Astronomical Observatories/Nanjing Institute of Astronomical Optics & Technology,Chinese Academy of Sciences,Nanjing 210042,China;2.CAS Key Laboratory of Astronomical Optics & Technology,Nanjing Institute of Astronomical Optics & Technology,Nanjing 210042,China;3.University of Chinese Academy of Sciences,Beijing 100049,China |
| |
| Abstract: | In order to meet the requirements of active optics control technology for segmented mirror telescope, an improved active disturbance rejection controller (ADRC) was designed to improve the position tracking performance of the position actuator and the capability of anti-disturbance. Firstly, the mathematical model of the position actuator, and the model of wind disturbance were established. The improved ADRC was described and the method of controller parameter selection was given. Secondly, the feasibility of the controller was demonstrated through a simulation of the control system of the position actuator. Finally, with the wind disturbance mechanism, the wind force was introduced into the position actuator system, and the performance of the improved ADRC, ADRC and the PID controller was compared by experiments. Experimental results show that the stability time of the step tracking of the improved ADRC is 201 ms, the steady-state mean square error is 7.1 nm, and there is no overshoot. In the anti-disturbance experiment, the maximum deviation of the improved ADRC is 38.8 nm and the steady-state mean square is 7.6 nm. These results illustrate that the performance of the improved ADRC is significantly better than those of ADRC and the PID controller, and the improved ADRC improves the performance of the position actuator system. |
| |
| Keywords: | |
|
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
