基于高度变化率指令的进场功率补偿系统研究

Research on Approach Power Compensation System Based on Height Rate of Change Command

针对采用高度变化率指令的舰载机自动着舰系统的进场功率补偿问题,在研究反区特性的基础上,设计了速度恒定与迎角恒定的进场功率补偿系统。在小扰动模型中仿真分析了高度变化率指令响应,在非线性模型中仿真了舰载机自动着舰的完整响应,并考虑舰尾流扰动,对比2种进场功率补偿系统在存在舰尾流扰动时着舰精度的差异。仿真结果表明,2种进场功率补偿系统均能实现控制目标,迎角恒定的进场功率补偿系统具有更好的轨迹控制能力,且受舰尾流影响更小。

Aiming at the approach power compensator problem of the automatic carrier landing system based on height rate of change command,approach power compensator systems to keep the speed constant and keep the angle of attack constant were designed separately on the basis of studying the characteristics of the aircraft’drag-velocity curve’back-side.Simulation and analysis of command was carried out in the small perturbation model.Anonlinear model was used to simulate the complete response of the automatic carrier landing system.Considering the carrier air wake disturbance,thedifferences in the landing accuracy oftwoapproach power compensatorsystems were compared.The simulation results show that both the designed approach power compensatorsystems can achieve the control objectives and theapproach power compensatorsystem with a constant angle of attack has better trajectory control capability and is less affected by thecarrier air wake.