Читать книгу Control Theory Applications for Dynamic Production Systems - Neil A. Duffie - Страница 37

The examples that were presented in this chapter illustrate some of the ways that models can be developed for production systems and components. Production systems often have many components, and dynamic models of these components need to be obtained individually using physical analysis or experimental data. Then they can be combined if desired to obtain a model of the dynamic behavior of an entire production system. In Chapter 3, transformation methods will be introduced that allow algebraic equations to be substituted for the linear differential and difference equations that describe the dynamic behavior of components in a production system. These transformations make combining models of components relatively easy and they are compatible with the many analysis and design tools that are implemented in control system engineering software. As also described in Chapter 3, transformed models of production system components can be assembled into block diagrams that graphically represent the input–output relationships between components in production systems, aiding in identifying, understanding, and designing the dynamic behavior of production systems.