高精度雷达天线白抗扰控制技术研究  

Research on ADRC of High Precision Radar Antenna

作　　者：凡国龙[1] 张录健[1] 

机构地区：[1]中国电子科技集团公司第39研究所,西安710065

出　　处：《测控与通信》2017年第1期10-16,共7页

摘　　要：针对阵风扰动影响高精度雷达天线指向和跟踪性能，提出基于ADRC的阵风扰动补偿方法。首先，结合天线速度环模型结构分析选用ADRC控制的原因。其次，针对速度环存在时延，基于Smith输出预估器进行设计，使输入到输出之间变成无时滞的惯性环节。再次，基于状态观测器正反馈实现对天线增阻尼设计；为了实现对跟踪误差幅值的连续性，对指令进行过渡过程预处理设计。在跟踪误差幅值较小时，位置环可容忍较大的比例控制，因此采用高增益PI控制对位置环进行设计。最后根据分析、仿真和工程现场测试表明基于ADRC可实现对阵风扰动的有效抑制。The pointing and tracking performance of high precision radar antenna is decreased due to the wind-gust disturbance, the ADRC method is used to compensate the wind-gust disturbance. Firstly, according to the structure of antenna velocity loop model, the reason of choosing ADRC is analyzed. Secondly, aiming at the time lag of the speed loop, the speed loop is designed to be the inertia link without delay by the Smith output predictor. Thirdly, the positive feedback of the state observer is used to increase the damping of the antenna servo system. In order to realize the continuous control of the tracking error, the pretreatment module of the transient process is adopted to realize the continuous control of the input commands. As the amplitude of the tracking error is small, the position loop can be controlled with high gain. Finally, according to the theoretical analysis, matlab simulation and engineering field test show that the effective suppression of gust disturbance can be realized by using ADRC.

关 键 词：阵风扰动 自抗扰控制 扩张状态观测器 

分 类 号：TN958[电子电信—信号与信息处理]