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A systematic near-optimum design technique for the control of nonlinear-control processes is presented. The method consists of three stages. In the first stage, called `subprocess decouplingÂ¿, coupling is neglected between two or more subsystems, thus reducing the process to a set of weakly coupled subprocesses. The second stage is to represent each subprocess by `slowÂ¿, `basicÂ¿ and `fastÂ¿ models, and is called `time-scale decouplingÂ¿. The third stage eliminates slow and fast variables, and obtains a near-optimum control for the basic subsystem. The method is applied to a coiler process common in continuous rolling mills.
Electrical Engineers, Proceedings of the Institution of (Volume:121 , Issue: 8 )
Date of Publication: August 1974