#5518. Actuator fault estimation for two-stage chemical reactor system based on delta operator approach

August 2026publication date
Proposal available till 20-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Modeling and Simulation;
Industrial and Manufacturing Engineering;
Computer Science Applications;
Control and Systems Engineering;
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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.
Keywords:
Actuator fault estimation; Delta operator; PIO; Two-stage chemical reactor system

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