Input selection strategy

There are many advanced strategies in classical control systems. Only a limited selection of examples is presented in this chapter. We start with cascade control, which is a simple introduction to a multiloop, but essentially SISO, system. We continue with feedforward and ratio control. The idea behind ratio control is simple, and it applies quite well to the furnace problem that we use as an illustration. Finally, we address a multiple-input multiple-output system using a simple blending problem as illustration, and use the problem to look into issues of interaction and decoupling. These techniques build on what we have learned in classical control theories. 

The molecular similarity strategy is based on Pauling s long-standing postulate that catalytic rate enhancement arises from the catalyst s ability to lower the energy input required to reach the transition state by selectively binding (and hence stabilizing) reactants in their transition-... 

A key business strategy has been the outsourcing of work to computer technology suppliers and developers. The objective of qualifying computer technology suppliers and developers is to evaluate and monitor these strategic partners for Part 11 compliance and to provide an input to the partner selection and partner relationship management processes. 

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