β Scribed by E.A. Woods
No coin nor oath required. For personal study only.
Through the use of a simple example involving a buffer tank, we illustrate the problems faced when attempting to formalize the dynamic aspects of a continuous process system. The problems are especially severe if we attempt to employ a purely qualitative representation. We show that the theoretical results obtained within qualitative reasoning describing the limits of qualitative simulation can be extended to cover the rule based approach as well. We conclude that for those cases where it is necessary to make predictions from a model of a dynamic system, we need a model based on a quantitative mathematical representation. Since representations of this type will not support any kind of reasoning about the system, apart from the computation of related values for variables, we need to employ some kind of hybrid approach to be able to make predictions about the evolution of variables while retaining the ability to reason about the behavior of the system at the same time.
π SIMILAR VOLUMES
An iterative technique for the derivation of a nearly optimal feedback control law for continuous dynamic systems with separable cost functions is developed based on the fundamental concepts of multilevel control. The developed technique comprises two major and subsequent stages. In the first stage,