高精度天线伺服控制系统基础理论与方法

本项目旨在针对大型科学工程和移动卫星通讯等领域中高精度天线伺服控制系统设计中提出的工程问题，运用系统辨识、鲁棒与最优控制理论给出切合实际的解决方案；并在此基础上进一步深化天线伺服系统在系统建模、控制器设计等方面的理论研究，运用频域分析理论提出适合基于工程实测数据进行有效性验证的系统建模和控制器设计方法，从而加强现代控制理论中现有设计方法与工程应用的联系；提出可以指导工程设计的具体方案，并进行相应的工程验证。我们将着重进行以下几方面的工作：一、系统模型品质的频域分析，工程对象中不确定性的数学描述与工程验证；二、研究鲁棒与最优控制中设计指标的工程意义，以及与传统频域指标，如：系统带宽、稳定裕量之间的定量关系；提出适用于实际工程的控制器设计方案；三、针对大型的科学工程等（如：平方公里阵SKA节点15米口径天线、新疆奇台110米天线、移动卫星通讯中的车载天线）方面需求，进行相关工程验证和实施。

This project aims to solve the engineering problems raised in the design process of high-precision antenna servo control system in the fields of large-scale scientific engineering projects and mobile satellite communication, and gives practical solutions by using system identification, robust and optimal control theory. On this basis, the theoretical research on system modeling and controller design of antenna servo system is further deepened, and the system modeling and controller design method suitable for validity verification based on engineering measured data is proposed by using frequency domain analysis theory, thus strengthening the connection between existing design methods and engineering applications in modern control theory. We propose specific solutions that can guide engineering design, and carry out corresponding engineering verification. We will focus on the following aspects: First, the frequency domain analysis of the quality of the system model, the mathematical description and engineering verification of the uncertainty of the object in the project; Second, study the engineering significance of the weight parameter in the quadratic optimal index, and corresponding optimal controller and closed-loop system performance analysis, especially the quantitative relationship between these performances and traditional frequency domain indicators, such as system bandwidth and stability margin; Third, perform the corresponding engineering verification and implementation for the requirements of the large-scale scientific projects, e.g. the node project in the square-kilometer array SKA synthetic aperture antenna, the 110-meter antenna in Xinjiang Qitai, and the high-precision antenna servo in mobile satellite communication.