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为了提高电控旋翼桨距的控制效果,提出了两种基于误差通道在线辨识的自适应滤波控制方法:缩放因子法和约束权函数法。利用桨距开环状态试验数据和最小二乘法辨识得到的控制对象数学模型,完成了两种改进方法的电控旋翼桨距控制仿真。仿真结果表明:缩放因子法在不降低自身自适应性的同时,可以有效地提高电控旋翼的总距及周期变距桨距控制精度和响应速度;约束权函数法则在有效抑制外部噪声干扰的同时提高了控制算法的稳定性。
In order to improve the control effect of the electronically controlled rotor pitch, two adaptive filter control methods based on error channel on-line identification are proposed: the scaling factor method and the restraining weight function method. Based on the experimental data of the open-loop state and the mathematical model of the control object identified by the least square method, two improved control methods of the electronically controlled rotor pitch control are completed. The simulation results show that the scaling factor method can effectively improve the control accuracy and response speed of the total pitch and the pitch pitch control of the rotor without reducing the self-adaptability. The constraint weight function is effective in suppressing external noise interference At the same time, the stability of the control algorithm is improved.