Adaptive backstepping controller with extended state observer for load following of nuclear power plant

2021 ◽  
Vol 137 ◽  
pp. 103745
Author(s):  
Jiuwu Hui ◽  
Jun Ling ◽  
Kai Gu ◽  
Jingqi Yuan
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
State Observer ◽  
Extended State Observer ◽  
Extended State ◽  
Adaptive Backstepping ◽  
Load Following ◽  
Backstepping Controller ◽  
Adaptive Backstepping Controller

Grid-Connected Nuclear Power Plant Key Issues Summary

2014 ◽  
Vol 521 ◽  
pp. 530-535
Author(s):  
Meng Wang ◽  
Jian Ding ◽  
Tian Tang ◽  
Zhang Sui Lin ◽  
Zhen Da Hu ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Large Scale ◽  
Power Modeling ◽  
Modeling Simulation ◽  
Load Following ◽  
Key Issues ◽  
The Impact

The current situation of nuclear power plants at home and abroad is described, and the impact of large-scale nuclear power accessing to the grid is analyzed, specifically in the aspects of nuclear power modeling, simulation, load following, reliability, fault diagnosis, etc. Nuclear power accessing to the grid will bring a series of problems, the causes of each problem, the main solutions and future development directions are summarized.

Command filtered adaptive backstepping control for high-accuracy motion tracking of hydraulic systems with extended state observer

2021 ◽  
pp. 095965182110366
Author(s):  
Hui Xie ◽  
Yu Tang ◽  
Gang Shen ◽  
Xiang Li ◽  
Deen Bai ◽  
...  
Keyword(s):  
Design Process ◽  
Motion Tracking ◽  
State Observer ◽  
High Accuracy ◽  
Extended State Observer ◽  
Time Varying ◽  
Hydraulic Systems ◽  
Extended State ◽  
Adaptive Backstepping ◽  
Command Filter

High-accuracy motion tracking of hydraulic systems is of great significance in industrial applications. Nevertheless, dynamic nonlinearity, modeling uncertainty, generalized disturbance, and measurement noise are inevitably existed in hydraulic systems, which severely deteriorates the practical control performance. Aimed at enhancing the motion-tracking accuracy of hydraulic systems, a novel command filtered adaptive backstepping controller with extended state observer is proposed in this article. On the basis of the established system’s nonlinear model, the extended state observer utilizing only position output feedback information is first designed to estimate the system’s unmeasurable states, and time-varying disturbances of the hydraulic system are also obtained for subsequent active disturbance compensation. Next, a second-order command filter is constructed to generate specific command signals and their derivatives, which significantly simplifies the controller design process by avoiding complicated analytical differential calculations in contrast to traditional adaptive backstepping algorithm. Subsequently, with consideration of system’s nonlinearity, parametric uncertainty, and time-varying disturbance, the developed extended state observer and command filter are introduced into the adaptive backstepping design process of the proposed controller, and theoretical stability of the proposed controller is guaranteed via Lyapunov analysis. Finally, the effectiveness and superiority of the proposed controller are demonstrated by comparative experimental results.

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