Controller emulation

Controller emulation A simple applieation in eontrol is the use of neural networks to emulate the operation of existing eontrollers. It may be that a nonlinear plant requires several tuned PID eontrollers to operate over the full range of eontrol aetions. Or again, an LQ optimal eontroller has diffieulty in running in real-time. Figure 10.28 shows how the eontrol signal from an existing eontroller may be used to train, and to finally be replaeed by, a neural network eontroller. 

Figure 12-8 A Simple Check of the Results Provided by an Online Tool for an Emulated Current Mode Control Switcher...

Figure 12-10 Minimum Input Voltage for the 25575 Emulated Current Mode Control IC...

Figure 12-12 A Page from a January 2007 Media Presentation for Emulated Current Mode Control ICs...

The computational and other (e.g., data base and design) capabilities to meet these needs can be specified. We may need to determine how much magnesium ion (or other substance of interest in an equilibrium system) is present in a cell interior or a solution emulating the cell interior. Here a complex series of equilibria may be affected by conditions such as temperature or ionic strength. Or it may be necessary to work through a pattern of concentrations of some particular molecular or ionic species to determine an ultimate effect, or to keep particular species or particular side effects within certain limits while changing others. Computations may have to start from any of the participating substances which are either to be controlled or are observable. 

Powerful mechanistic enzymology in conjunction with structural biology studies have provided insight into the manner in which the protein environment of an apoenzyme augments and controls coenzyme reactivity. The goal of the protein design efforts that include coenzyme functionality is to estabhsh whether these features can be emulated within designed peptide and protein constructs. 

Figure 3.8 (a) shows a simplified setup with an ultra fast digital control unit. The bridge design of the setup manages to emulate pulse trains of real memory devices as displayed in Figure 3.9. 

Controlled power supply The electrolyser is supplied by the controllable power supply, either manually or PC-controlled to emulate the operation from a different type of plant. 

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