Realization of improvement active disturbance rejection technology based on fal function filter
Zhengwen Li · Electronic Design Engineering · 2011
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.