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Actuator fault estimation for two-stage chemical reactor system based on delta operator approach.
- Source :
-
Journal of Process Control . Nov2021, Vol. 107, p37-46. 10p. - Publication Year :
- 2021
-
Abstract
- Based on the delta operator approach, a new method of actuator fault estimation for a two-stage chemical reactor system is presented with time-delay and outside disturbances. Firstly, a nonlinear delta operator mathematical model is established to describe the two-stage chemical reactor systems by using the mechanism analysis method. In order to estimate the actuator fault, the proportional–integral observer (PIO) is employed as the state estimator. Meanwhile, a novel delta operator-based actuator fault estimation algorithm is proposed. Then, by means of the Lyapunov–Krasovskii functional technique, sufficient conditions are derived to guarantee that the error system is asymptotically stable with a predefined H ∞ performance index. Next, the desired PIO can be designed. Finally, simulation results are given to illustrate the effectiveness of the proposed methods. • A novel proportional and integral fault estimation algorithm is firstly proposed. • This method connects continuous-time systems and discrete-time systems. • A practical simulation example is given to verify the method. • The system model in this paper is more universal and practical. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09591524
- Volume :
- 107
- Database :
- Academic Search Index
- Journal :
- Journal of Process Control
- Publication Type :
- Academic Journal
- Accession number :
- 153478986
- Full Text :
- https://doi.org/10.1016/j.jprocont.2021.09.013