The Research And Application Of Two Types Of Nonlinear Adaptive Control Methods

There are two nonlinear cases in power plants which are structure nonlinear and parameter nonlinear. Usually we linearize them approximately in industrial process,but in some cases this can't satisfy the request of automatic control which makes us consider the nonlinear factors in the industrial process.In practical process of power plants the typical structure nonlinear case is dead-zone and the latter case is the nonlinear variance of objects'parametres with the changes of working condition.The nonlinear research is parallel with the linearity and adaptive method can be used to deal with nonlinear cases.In this paper two adaptive control methods are used to solve the problems brought by the dead-zone of boiler negative pressure system and the nonlinear changes of the milling system's character parameters, which achieved good results. Li Jian(Thermal power engineering)Directed by prof. Gu Junjie...