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According to the dynamic characteristics and static relationship of boiler steam temperature controlled object, to establish the model of boiler steam temperature, it can be described by block diagrams or state space, which has the full scope non-linear and time-varying characteristics. The section transfer functions can be converted into variable state space applied Jordan blocks and algebraic transformation...
The boiler thermal control system is well known with the characteristic of slow time-varying, large lag and large inertia. Adopting generalized Jordan block and algebra equivalence transform method, all of the transfer functions at different load points is transformed to state-space description with time variable. According to engineering practice of control strategy based on incremental function...
Dynamic characteristic of supercritical unit is complex. Its control technology is an important research task. This paper presents a mathematical model of coordinated control system controlled objects. For control characteristic of supercritical unit, design a generalized intelligent coordinated control system which made up of classical control, modern control, intelligence control and special measure...
The fuzzy-control usually takes the error and the error derivative between the output and the set point of the system as the input of the controller. But from the pure mathematical point of view, the variable and itpsilas every rank derivative of the system can be seen as the each state of the system. This paper shows some limitation of the classical fuzzy-control and brings forward the concept of...
This paper presents a control system design scheme which combined the State Feedback based on the Increment Function Observer with PID, this design scheme has been successfully applied to a 600 MW boiler super-heater steam temperature control system. The control system could be in automation mode continually while the unit quickly changed its load up to 375 MW in succession, and it was taking an excellent...
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...
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