Active disturbance rejection control with adaptive delayed input and its performance monitoring for time-varying delay system

• Published in: 2016 35th Chinese Control Conference (CCC) pp. 5964 - 5969
• Main Authors: Li, Dazi, Yu, WenLong, Zhou, Jinlin, Jin, Qibing
• Format: Conference Proceeding Journal Article
• Language: English
• Published: TCCT 01-07-2016
• Subjects: Active control; Active Disturbance Rejection; Adaptive control systems; Conferences; Control systems; Correlation Technique; Delay; Delay effects; Delay systems; Delays; Disturbances; Monitoring; Observers; Performance Monitoring; Rejection; Time delay; Time-varying Delay; Time-varying systems
• ISSN: 2161-2927; 1934-1768
• DOI: 10.1109/ChiCC.2016.7554293

Active disturbance rejection control (ADRC) shows significant performance on time delay, nonlinearity and uncertainty phenomenon in industrial processes. However, industrial processes exhibit complex behavior with time-varying characteristic, especially time-varying delay. In this paper, an active disturbance rejection control with adaptive delayed input (AD-ADRC) is proposed to solve the control problem of a time-varying delay system. The proposed method is based on integration of an ADRC with delayed input (D-ADRC) and an estimation module. A time-delay system is controlled by D-ADRC first. Then the time-varying delay is identified via correlation technique. A minimum variance principle is used as a benchmark to monitor control performance of time-varying delay system under D-ADRC and AD-ADRC. Simulation results show the efficiency of AD-ADRC when the time delay changes in a large degree.