Title :
Active disturbance rejection control for digital electric-hydraulic system
Author :
Sun Li ; Dong Junyi ; Li Donghai ; Zhang Yuqiong
Author_Institution :
Dept. of Thermal Eng., Tsinghua Univ., Beijing, China
Abstract :
Digital electric-hydraulic system (DEH), which is nonlinear, time-varying and of parameter uncertainties, is the most widely used governing system of the mainstream steam turbine in China. In this paper, a compound control strategy using active disturbance rejection control (ADRC) and proportional control strategy is proposed for the DEH system. ADRC has simple structure, strong disturbance rejection ability and is independent on accurate mathematical model. When it is applied to DEH system, the unmodeled dynamics and parameter uncertainties in DEH can be estimated and actively compensated. Based on the industrial control requirements, the load control simulation is carried out. The results show the effectiveness and robustness of the proposed control strategy for the DEH system.
Keywords :
active disturbance rejection control; electrohydraulic control equipment; hydraulic systems; load regulation; robust control; steam turbines; time-varying systems; uncertain systems; ADRC; China; DEH system; active disturbance rejection control; compound control strategy; digital electric-hydraulic system; industrial control requirements; load control simulation; nonlinear system; parameter uncertainties; proportional control strategy; steam turbine; time-varying system; Electronic mail; Load flow control; Mathematical model; Monte Carlo methods; Robustness; Sun; Uncertain systems; Robustness; active disturbance rejection control (ADRC); digital electric-hydraulic (DEH) system; load control;
Conference_Titel :
Control Conference (CCC), 2014 33rd Chinese
Conference_Location :
Nanjing
DOI :
10.1109/ChiCC.2014.6895550
