基于扰动前馈补偿的抗车摇窄波束天线系统

Study and Application of Disturbance Feedforward Compensation in Anti-vehicle Swaying of The Vehicle Narrow Antenna Servo System

摘要:

在车辆等机动平台中，行驶过程中产生的的车体摇动会严重影响天线的跟踪指向性能。为有效抑制车摇扰动，实现稳定跟踪，提出一种基于扰动前馈补偿的抗车摇窄波束天线系统。通过对车摇扰动信号进行测量与分析，对抗车摇扰动机理进行研究，采用扰动前馈复合控制作为抗车摇策略。在此基础上，开展了伺服系统的理论分析与半实物仿真验证。试验结果表明，引入扰动前馈补偿前后，系统获得了比较理想的车摇隔离效果，对车摇扰动的最大隔离误差由0.608°降至 0.043°，能确保天线稳定跟踪。

Abstract:

In mobile platform such as vehicles，the body sway caused by vehicle motion seriously affects the antenna tracking and pointing performance.To suppress the vehicle sway disturbance and achieves stable tracking， a narrow beam antenna system based on disturbance feedforward compensation for anti-vehicle sway is proposed. By measuring and analyzing the vehicle sway disturbance signal，the mechanism of anti-vehicle sway is studied，and disturbance feedforward compound control is adopted as an anti-vehicle sway strategy. Based on this，the theoretical analysis and semi-physical simulation vericication of the servo system are carried out. The results of the experiment show that after the introduction of disturbance feedforward compensation，the system achieves a relatively ideal isolation effect against venicle sway.The maximum isolation error of vehicle sway disturbance is reduced from 0.608 to 0.043°， which can ensure the stable tracking .