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Modified Cascade Controller Design for Unstable Processes With Large Dead Time
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DOI：10.1109/ACCESS.2020.3019027.png)
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摘要
En 中文
In this article, a simple controller design with the fractional order calculations applies to unstable cascade processes with a significant time delay. Series cascade control system consists of two loops in which the inner loop is designed using the IMC principle based on the synthesis method. The primary controller is designed with the FOPI-FOPD controller to ensure stable and satisfactory closed-loop performances for the unstable processes. For the primary controller, five tuning parameters are involved, which tuned using the centroid of the convex stability region method. Different examples are given to illustrate the superiority of the proposed design over some existing designs. Results obtained from simulation reveals that with the proposed control design, enhanced closed-loop control performances are obtained for nominal and perturbed conditions.
Keyword:
Process control
Delays
Control systems
Tuning
Filtering algorithms
Fractional calculus
Series cascade control
unstable time-delay process
fractional-order PI
PD
internal model control
convex stability region
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期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
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引用论文
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