Improved Active Disturbance Rejection Control (ADRC) with Extended State Filters

To address time delay and noise problems in control systems, in this study, we integrated an extended state filter for signal filtering into an active disturbance rejection control (ADRC) system and derived an improved ADRC approach. In addition to the active anti-disturbance and active tracking estimation functions of the existing ADRC, the proposed approach also includes active filtering and active advance prediction functions, which can filter out the effect of measurement noise on system state observation while reducing the delay between the system control output and the detection of the sensor input. We verified through an evaluation in a simulation environment that the proposed approach may be expected to achieve improved control accuracy and increase the stability of closed-loop control systems.

Automated summary

In this study, an extended state filter was integrated into an active disturbance rejection control (ADRC) system to address time delay and noise problems. The proposed approach includes active filtering and active advance prediction functions, in addition to the existing functions of active anti-disturbance and active tracking estimation, which results in improved control accuracy and increased stability of closed-loop control systems.