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为解决某型飞行器的角度跟踪控制问题,设计了离散模糊滑模角度跟踪控制算法。以飞行器在空间的姿态运动方程为基础建立了其短周期运动模型。基于离散时间模糊滑模算法,设计了双入双出的模糊控制器,将滑模切换函数及其变化率作为模糊控制器的输入,以模糊控制器的二维输出信号为依据调整滑模趋近律的参数,该算法在减小了系统的抖振同时,保持了控制器对模型不确定和外界干扰的不敏感性。仿真表明,该跟踪控制算法动态响应快,具有良好的跟踪性能和较强的鲁棒性。
In order to solve the angle tracking control problem of a certain type of aircraft, a discrete fuzzy sliding mode angle tracking control algorithm is designed. The short-period motion model is established on the basis of the attitude motion equation of spacecraft in space. Based on the discrete-time fuzzy sliding mode algorithm, a fuzzy controller with double-in and double-out is designed. The sliding mode switching function and its rate of change are taken as the input of the fuzzy controller. The sliding mode is adjusted based on the two-dimensional output signal of the fuzzy controller Near-law parameters, the algorithm reduces the chattering of the system, while keeping the controller insensitive to the model uncertainty and external interference. Simulation results show that the tracking control algorithm has fast dynamic response, good tracking performance and strong robustness.