基于模糊平滑切换的直升机飞行控制与仿真

Helicopter Flight Control and Simulation Based on Fuzzy Smooth Switching

研究了直升机前飞状态下的模糊平滑切换控制方法和仿真验证问题。首先,在不同的平衡点,对直升机模型进行线性化,得到线性子模型集。再针对每个子模型,设计了基于遗传算法的H∞控制器。然后采用模糊平滑切换策略设计了全局控制器。最后对设计得到的直升机飞行控制系统进行了仿真。仿真结果表明,所设计的直升机飞行控制系统实现了前飞状态下不同速度的飞行控制,保证了控制过程的平滑性,达到了ADS-33D操纵品质水平1的要求。

The helicopter flight control and simulation in forward flgiht was investigated.The helicopter model was first linearized in each equilibrium point to compose the bank of lineared sub-model.For each sub-model,a GA-based H∞ controller was designed.A whole controller was designed using fuzzy smooth switching strategy.Simulation results from the helicopter flight control system were presented to show the desired flight control effect and the smoothness of the control process.The ADS-33D level 1 handling qualities requirements were satisfied.