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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 control of the bed temperature which is the key variable in Circulating Fluidized Bed Boiler (CFBB) system is a challenging problem due to its characteristics of the strong nonlinearity, large time delay and time-varying. It is very difficult to tune its PID controller based on the traditional PID tuning methods such as the classic Z-N method. Therefore, a Modified Binary Particle Swarm Optimization...
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...
The contradiction between speediness and stability is a salient problem of control system especially when the system is with character of time-varying parameters and big-inertia. It is hard to be solved perfectly either by classical control or modern control or intelligent control. The integrated control scheme and concept of generalized intelligent control (GIC) is proposed in this paper. The state-space...
Because there is a couple between the heating layer and the cooling one of the boiler in a PCT-II process control system, tuning the PID parameters is quite difficult and takes a long time to control the temperatures of the boiler besides some steady-state error. In this paper a decoupling control method based on the neural network is presented. The algorithm adopts tandem structure with the PID controller...
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