Abstract
Abstract In this work, performance analysis of nonlinear isothermal continuous stirred tank reactor (CSTR) control using sliding mode controller is presented. An isothermal CSTR is a benchmark example of nonlinear chemical process which produces inverse response; hence, it is difficult to control using traditional controllers. From steady-state characteristics of CSTR, it is observed that it shows inverse response, negative response, and maximum yield point operating conditions. An observer-based SMC is designed for process models obtained from these three operating conditions and made their comparative study. For estimation of uncertainties and nonlinearities present in CSTR, an extended state observer is used. Designed controllers are tested in simulation study, and their control performance analysis is done on the basis of error indices from obtained results.KeywordsSliding mode controlAdvanced controlIsothermal CSTRNonlinear process
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