基于fal函数滤波的改进自抗扰技术的实现

自抗扰技术不但能观测系统的所有状态,还能观测系统模型不确定性及内外干扰,但该技术却忽略了测量噪声对系统观测的影响.基于解决测量噪声对观测系统精度的影响,提出了fal函数滤波方法,不仅能克服滤波后信号的幅值、相位与系统的真实输出差别较大的问题,而且具有快速收敛性和较高的滤波精度.仿真结果验证了该方法能够有效地滤除量测噪声...

Realization of improvement active disturbance rejection technology based on fal function filter

Active disturbance rejection technology can observe not only all the states of the system,but also the system model uncertainty and the inside-outside interference,but this technology ignores the influence of the system observation caused by the measure noise.Based on solving the influence of the observation system precision caused by the measure noise,this paper introduced a method of fal function filter,which could overcome the problem of magnitude of the filtered singnal,output of the phase differend between the real system,and fast astringency and better filter precision.The simulation results show that the method can effectively filter the measurement noise on the impact of the system observation,therefore,demonstrates the validity.