变惯量机载天线控制中转动惯量在线辨识器设计及仿真

Design and Simulation of online inertial moment sensor for variable inertia airborne antenna control

摘要:

机载天线稳定跟踪系统在复杂的动态环境中，为削弱天线载体在运动过程中转动惯量的变化对系统控制性能的影响，针对天线伺服系统设计出在线辨识转动惯量环节并前馈实现速度环自整定的控制策略。采用模型参考自适应辨识算法设计出系统平稳运行时的转动惯量辨识器，利用三阶最佳设计法将转动惯量辨识值前馈速度环进行自整定控制。在Simulink中自定义电机及辨识器模型，仿真观测出辨识器在不同自适应增益下的辨识精度，将其前馈至速度环进行自整定，仿真结果表明自整定速度环控制下系统速度响应的快速性和准确性。

Abstract:

Airborne Antenna Stability Tracking System is applied in complex dynamic environment, in order to weaken the influence of the change of inertia during the the movement of the antenna carrier to the system control performance, the control strategy is to design an online identifier for moment of inertia link and feedforward the value to the speed regulator to achieve self-tuning .The Model reference adaptive identification algorithm is adopted to design the inertia identifier when the system runs smoothly, the three order optimal design method is used to feedforward the value to the speed regulator to achieve self-tuning.The identifier for moment of inertia and feedforward model in Simulink is designed,the simulation result showed the identification accuracy under different adaption gain and verified the rapidity and correctness of system’s speed response under self-tuning speed control.