Variable structure controllers for unstable processes |
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Affiliation: | 1. Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamilnadu, India;2. Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana, India |
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Abstract: | A variable structure control (VSC) method for unstable industrial processes is proposed. The proposed control method is able to provide a highly satisfactory system performance and to tackle with robustness issues of the processes in the presence of uncertainties. An ITAE-based numerical tuning algorithm for acquiring optimal control parameters, and a direct auto-tuning mechanism for the proposed controller are also provided. The performance of the proposed VSC method is illustrated on some unstable process models including a continuous stirred tank reactor (CSTR), in order to show its effectiveness, validity and feasibility. |
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Keywords: | Variable structure systems Process control Sliding mode Auto-tuning PID control Optimization |
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