Benefit design objective setting

One of the early approaches to multivariable control is decoupling control By adding additional controllers called decouplers to a conventional multiloop configuration, the design objective to reducing control loop interactions can be realized. In principle, decoupling control schemes can reduce control loop interactions, and a set-point change for one controlled variable has little or no effect on the other controlled variables. In practice, these benefits may not be fully realized due to imperfect process models. A typical decoupler is based on a simple process model that can be either a steady-state or dynamic model. 

The idea is to gain the benefits of 00, but without throwing away old code. You want to be able to make systems that remain flexible as your organization and its structure and working methods change. You want to build many applications from a set of basic components. These are features of object-oriented designs. 

One area that is surely set to benefit from research aimed at developing the self-assembly of mechanical systems is molecular electronics. Initially, one can look with considerable interest towards the development of chemical sensors and molecular switches of a quite novel design. Furthermore, the ability to store and manipulate information at a molecular level and on the nanometer-scale is clearly on the horizon. It will open the way for the development of molecular electronics and, ultimately perhaps, the molecular-scale computer. The objective at present is to be able to control die assembly, the form, and the function of synthetic nanometer-scale structures with the same degree of precision that is displayed by nature, so as to make it possible to achieve these ambitious goals. Only now are chemists beginning to learn how to construct molecular assemblies and supramolecular arrays such that information might ultimately be written into them, processed by them, stored in them, and eventually read back out of them. 

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