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The paper describes the procedure to decouple TITO (two input two output) system. The objective is to reduce the complications due to loop interaction in input and output variables and convert it into FOPDT (first order plus time delay) system. Then, for decoupled system PID controller is designed independently based on gain and phase margin algorithm. The performance of system is verified using simulation...
This paper addresses the problem of discretization for uncertain linear systems with time-delay, uncertainty being of type bounded norm. Model is uncertain when the system modeling errors in the operating range controlled by the command are poorly known. A new approximated discretization method and digital design for control systems with time-delay are proposed. Numerical examples are given to demonstrate...
The conventional PID control can not receive satisfactory results to liquid level systems, because time delay always exists in these systems. Therefore, a kind of self-adaptive fuzzy Smith control is constructed by combining the merits of Smith predictor and fuzzy PID control, and applied to liquid level systems. The simulation results show that the proposed method can work satisfactorily.
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