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Research of mathematical model is an important work in control field. According as the abstract concept of the Hammerstein model, this paper studies modelling method based on balance points of controlled object, taking objects of thermal control field as research background, establishes corresponding mathematical models of coordinate controlled object for boiler-turbine generator units whose boilers...
The research on mathematical model of coordinate control system (CCS) of boiler-turbine generator unit in thermal control field has achieved some significant results. But there are still some important theoretical and conceptual issues. And the correctness of every type of mathematical model has a direct effect on its practical application. Such as Bell- Astrom model, the controlled object described...
The validity of mathematical model as basis to research the boiler-turbine coordinated control system will direct impact the research result. Based on the energy conversation law, the Bell- Astrom model has deeply analyzed in this paper. The mathematical deducing offer a method applied to analyze and distinguish a mathematical model. Moreover it has provide that the mathematical model much more accord...
The proof of stability for an observer is very important for it can be used in engineering application. Adopting state-space method to describe the synthetic coordinated control system that is combined with state feedback based on incremental function observer (IFO-KDeltax) merging PID controller and plus intelligent control, the sufficient condition of control system stabilization is given by mathematical...
Boiler super-heater steam temperature control object is generally with characteristic of parameters slow time variable, big inertia and larger time lag. Using the IFO-KDeltax and PI state observer for reference, the concept of "Incremental PI Function Observer in Broad Sense" (IFO-PI/BS) is presented. Theorem on stable conditions of control system based on the IFO-PI/BS is proved by mathematical...
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