Computer Simulation Of Fuzzy PID Controller

Science technology and artificial intelligences develop continuously, which urge the automatic control toward the direction of development that intelligence control, being a kind of new control technique, the intelligence control has already got the extensive application in more and more control realms.The PID control is the most traditional control technique, which has been keeping predominant position at the industry process control since it was led into the control realm in 18 centuries, it was called the evergreen tree of the control realm. According to the covariance, PID controller has 90% above of the controllers in the industry control. The PED controller is the earliest stage of controller type, which was deeply subjected to the engineering technical personnel's fancy, for its structure is simple, each controller parameter has the obvious physics meaning, and adjusting is convenient.The fuzzy control, which is based on the gathering theory, fuzzy language parameters and fuzzy logic theories, with the control rule of checking knowledge and expert's experiences, is a kind of intelligence control technique. The fuzzy control can imitate the person's faintness to reason logically and make policy from the behavior, can realize better control without the mathematics model of the object, can carry out no line control, so it has strong vitality.The paper is based on the analysis of the intelligent control, elaborating the present development condition of the PID control and the fuzzy control and the principle of the fuzzy control, taking the fuzzy PID control as the research object, mainly carrying on as following several works:(1)Trying to discuss the form of the realization of the fuzzy control in control system, and carry on the essentials description to some forms of typical model.(2)Aiming at the fuzzy PID control, using the Simulink and the Fuzzy in the MATLAB, the paper carried out the imitation of true research to the dissimilarity. At building up the rule of fuzzy, carrying on full analysis to the control process, and carrying on many experiments again and again, the fuzzy rule of the establishment comes to ideal control result by the imitation and actual verification.(3)Combine to imitate the true research result, regulation of PID control, regulation of 3D fuzzy control and regulation of fuzzy PID control carried on comparison. More the result expresses the fuzzy controller of PID at the front of the control process to has the advantage of fuzzy controller, but at the last of the control process it has the advantage of the modulator of PID again, so it is a kind of controller with good function.(4) The fuzzy PID control technique that the paper study was used to the direct current electrical engineering control, and set up the control system of direct current electrical engineering, past to experiments and arrived at the conclusion that the fuzzy PID control has the good dynamic state and the static state characteristics furthermore, is a kind of control project with good function and easy realization.