Reactor Temperature Control Based on Improved Fractional Order Self-Anti-Disturbance

In the chemical industry, a reactor is an absolutely necessary container. The fact that its dynamic qualities are nonlinear and unknown, however, is what causes the temperature to deviate from the value that was specified. As a result, the typical PID control cannot fulfill the prerequisites of the...

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Bibliographic Details
Published in:Processes 2023-04, Vol.11 (4), p.1125
Main Authors: Tang, Xiaowei, Xu, Bing, Xu, Zichen
Format: Article
Language:English
Subjects:
Chemical industry
Chemical reactions
Control equipment
Control theory
Controllers
Cooling water
Design
Feedforward control
Heat
Mathematical models
Polymerization
Process controls
Proportional integral derivative
Rejection
Simulation
State observers
Temperature control
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Summary:In the chemical industry, a reactor is an absolutely necessary container. The fact that its dynamic qualities are nonlinear and unknown, however, is what causes the temperature to deviate from the value that was specified. As a result, the typical PID control cannot fulfill the prerequisites of the production process. A new nonlinear function is presented to replace the function that was previously used, and a temperature controller that is based on better fractional order active disturbance rejection is devised. On the basis of a new fractional order temperature detector (FOTD), a new fractional order equilibrium state observer (FOESO), and nonlinear function, an improved fractional order active disturbance rejection controller has been developed. A model of the reactor was created, and the dynamic properties of temperature control were investigated. By simulation and experimentation, it was demonstrated that the strategy has a number of benefits and is effective. In this approach, the information provided by the model is exploited to its maximum potential, and the temperature of the inlet cooling water is employed as the temperature control disturbance for feedforward compensation. Over the entirety of the process, this guarantees that the desired temperature will be preserved. When compared to FADRC, PID, and ADRC, the rising time is increased by 5 s, and the overshoot is raised by 25%. It has been established that the fraction-order active disturbance rejection controller has a quicker response speed, a higher capacity for anti-interference, and a quicker speed of stabilization.
ISSN:2227-9717
2227-9717
DOI:10.3390/pr11041125