飞行模拟器操纵负荷系统内回路的逆模型控制

摘要

To improve force feel simulation fidelity of the control loading system on the flight simulator based on force loop, the effect of inner loop tracking performance on the fidelity of force feel simulation is analyzed. A controlling strategy combining proportion with feedforward inverse model compensation is put forward following the structure invariance principle for restraining surplus force. On the premise of loop stability, this strategy can expand inner loop bandwidth. Simulation and hardware-in-the-loop experiment on the RT-LAB based rapid prototype control platform show that the proposed control strategy improves the inner loop tracking performance, thus significantly enhances the force feel simulation fidelity of control loading system.%为了改善基于力回路的飞行模拟器操纵负荷系统的力感模拟逼真度,分析了内回路跟踪性能对力感模拟逼真度的影响；在基于结构不变性原理抑制多余力的基础上,提出了比例结合前馈逆模型补偿的复合控制策略,在不影响内回路稳定性的前提下,该复合控制策略能有效拓展内回路的频宽.仿真结果显示,该复合控制策略提高了内回路的跟踪性能.在基于RT-LAB的快速原型控制实验平台上进行了半实物仿真实验,结果表明该控制策略可以明显改善内回路的跟踪性能,从而显著提高操纵负荷系统力感模拟的逼真度.