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标题：基于级联一阶自抗扰控制器的机载雷达伺服系统的设计 |
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作者：谢洋，姜仁华，刘亚云 |
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| 2018年第5期 访问次数：294次 |
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摘要：传统雷达位置伺服系统的控制仍以PID控制为主，PID控制虽然结构简单，但进行位置跟随时，存在两点不足：①动态响应不理想；②位置跟踪性能差，无法满足高性能要求。由于位置环和转速环均可表示为一阶系统数学模型，因此可以提出一种通用一阶ADRC，分别应用于位置环和转速环中，由两个一阶ADRC级联的方式取代传统的PID，不仅能够对转速实现精确控制，还能使设计简化，调试方便。并且，统一的控制器结构还具有较强的通用性。通过基于某型机载雷达伺服系统的仿真和试验，验证了所提方法具有较好的动态特性和较强的跟踪性能，能够满足雷达伺服系统的性能要求和工程化应用的可行性要求。
关键词：永磁同步电机；雷达位置伺服系统；一阶自抗扰控制器
Abstract: Traditionally, PID control is used in radar position servo system design. Although PID control has simple structure, there are two disadvantages during position tracking:1) dynamic response is not very good ;2) performance for position tracking is bad, that could not meet highperformance requirment. Since that both position loop and speed loop could be expressed as firstorder mathematic model,a universal firstorder ADRC was raised in this paper, that could be applied in position loop and speed loop respectively. In this paper, traditional PID was replaced by cascading of two first order ADRC, that not only could achieve accurate control on speed,but also could simplify the design and test easily. In addition, unified controller strcture could bring stronger generality. Though the simulation and test on airborne radar servo system, the result has shown the verification for this new method in this paper, with better dynamic performance and tracking performance. This could meet radar servo system performance requirment and the feasibility requirement of engineering application.
Key words: permanent magnet synchronous motor (PMSM); position servo system; universal firstorder active disturbance rejection controller (ADRC)
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