Intelligent Control Algorithm of Cloud models and Simulation Research of Superheated Steam Temperature Control

For implementing excellent control to nonlinear systems with long time-delay,a new intelligent control algorithm of cloud models was proposed.This algorithm presents the uncertainty reasoning of control rules based on cloud model.It represents a qualitative concept with expected value Ex,entropy En and hyper entropy He,and integrates the fuzziness and randomness of a linguistic concept in a unified way.This model is a new method for transformation between qualitative and quantitative in the knowledge.The intelligent controller uses the theory of the fuzzy control,designing a variant dimension cloud model intelligent controller containing a one-dimension cloud model controller to eliminate steady-state error,which is used for superheated steam temperature control of a supercritical once-though 600MW boiler.It also shows that the cloud controller is simple and easy,directly perceived through the senses,and has strong robustness,better control performance,and good application.