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Disturbance observer-based robust backstepping load-following control for MHTGRs with actuator saturation and disturbances
- Source :
- Nuclear Engineering and Technology, Vol 53, Iss 11, Pp 3685-3693 (2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- This paper presents a disturbance observer-based robust backstepping load-following control (DO-RBLFC) scheme for modular high-temperature gas-cooled reactors (MHTGRs) in the presence of actuator saturation and disturbances. Based on reactor kinetics and temperature reactivity feedback, the mathematical model of the MHTGR is first established. After that, a DO is constructed to estimate the unknown compound disturbances including model uncertainties, external disturbances, and unmeasured states. Besides, the actuator saturation is compensated by employing an auxiliary function in this paper. With the help of the DO, a robust load-following controller is developed via the backstepping technique to improve the load-following performance of the MHTGR subject to disturbances. At last, simulation and comparison results verify that the proposed DO-RBLFC scheme offers higher load-following accuracy, better disturbances rejection capability, and lower control rod speed than a PID controller, a conventional backstepping controller, and a disturbance observer-based adaptive sliding mode controller.
- Subjects :
- Computer science
business.industry
Modular high-temperature gas-cooled reactors
020209 energy
Control rod
TK9001-9401
Load following power plant
Actuator saturation
PID controller
02 engineering and technology
Auxiliary function
Modular design
Disturbance observer
030218 nuclear medicine & medical imaging
03 medical and health sciences
0302 clinical medicine
Nuclear Energy and Engineering
Load following
Control theory
Backstepping
0202 electrical engineering, electronic engineering, information engineering
Nuclear engineering. Atomic power
business
Subjects
Details
- ISSN :
- 17385733
- Volume :
- 53
- Database :
- OpenAIRE
- Journal :
- Nuclear Engineering and Technology
- Accession number :
- edsair.doi.dedup.....9d19c90a913f9aada3db56d9b0d3864b