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介绍了75t/h循环流化床锅炉燃烧控制系统的控制算法和软件设计。系统设计中以两输入单输出的模糊控制决策为基础,采用了带自调整因子的模糊控制器以实现主汽压回路的自动控制,并且采用了风煤比自寻优控制来提高锅炉燃烧的经济性。循环流化床锅炉近年来发展很快,但是它的自动控制问题一直没有得到很好的解决。即使实现了自动控制,也是以经典的PID控制居多。由于循环流化床锅炉的控制较为复杂,特别是其燃烧过程是一个具有强干扰、非线性、时变、多变量的过程,很难用数学模型来进行描述,即使能够建立数学模型,也是十分粗糙的。因此,用常规的控制理论解决这种工业过程的自动控制问题就遇到了障碍。然而,模糊控制在使用中不必建立精确的数学模型,而是基于专家知识和经验,运用模糊数学理论进行模糊推理决策,因此,其应用越来越广泛。
The control algorithm and software design for the combustion control system of 75t / h circulating fluidized bed boiler are introduced. Based on the fuzzy control decision of two inputs and one output, the fuzzy controller with self-adjusting factor was adopted in the system design to realize the automatic control of the main steam pressure circuit. The self-optimizing control was adopted to improve the combustion of the boiler Economic. Circulating fluidized bed boilers have developed rapidly in recent years, but its automatic control problems have not been well solved. Even if the realization of automatic control, but also the majority of classic PID control. Because CFB boiler control is more complicated, especially its combustion process is a process with strong interference, nonlinearity, time-varying and multivariable, it is difficult to describe it with mathematical models. Even if mathematical model can be established, it is quite Rough. Therefore, the conventional control theory is used to solve the problem of automatic control of this industrial process. However, it is not necessary to establish an accurate mathematical model in the use of fuzzy control, but based on expert knowledge and experience, the use of fuzzy mathematical theory for fuzzy reasoning decisions, therefore, its application is more and more widely.