舰载遥测装备伺服系统抗船摇设计与试验

Anti-rock Design and Experiment of Carrier-borne Telemetering Equipment Servo System

对于安装在舰船上的伺服系统,载体的运动是一种干扰,在跟踪目标时必须使波束稳定,减小跟踪误差。采用跟踪环路中加入速率陀螺反馈的稳定环和位置环的伺服系统方案,天线指向明显提高,达到了隔离船摇的目的。针对系统大尺寸抛物面天线结构,体积大、重量重,难以在摇摆台上进行测试验证,且设计一个高精度伺服系统稳定平台既昂贵又复杂,提出了一种舰船生减摇鳍模拟船体摇摆,跟踪动态遥测目标的方法。试验与结果分析表明,采用该设计方法使系统船摇隔离指标优于40 d B,有效提高系统在高海况下目标的捕获跟踪性能。

For the carrier-borne telemetering equipment servo system,the movement of carrier is a kind of disturbance. Duringtarget tracking,the beam should be stable so as to reduce the tracking error. The scheme of using the servo system with adding stabilization and position loops with rate gyro feedback into the tracking loop can significantly increase the antenna pointing accuracy to isolate the ship disturbance. The large parabolic antenna has large volume and high weight,is difficult to perform the test at swing platform,and the high-precision servo system stable platform is expensive and complex. In view of these problems,this paper proposes a method of using decreasing-swing fim to simulate ship disturbance to track the target. The experimental results show that this design can realize the ship disturbance reject rate of better than 40 dB,and significantly increase the acquisition and tracking performance of system under severe sea conditions.