Interaction reducer for closed-loop control of multivariable systems
نویسنده
چکیده
In process multi-input multi-output (MIMO) systems are observed that are dominated by interactions between input and outputs. Process decouplers are synthesized to reduce these interactions before controller design. In this work analytical expressions for closed-loop interactive transfer functions are found and interaction reducers (IR) are designed (as process decouplers) for closed-loop control to minimize the interactions between input/outputs of distillation column. Multiloop PI controllers are tuned using different tuning rules and closed-loop systems with IRs are simulated. The closed-loop results reveal that undesirable responses due to interactive transfer functions are made negligible.
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