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In the industrial control area, WinCC is widely applied in industrial production process of real-time monitoring control and has become one of the important configuration software. But it is still unable to realize complex control algorithm with shortage of programming language. While Mat lab can deal with large amounts of data with high efficiency with its toolbox and Simulink simulation environment,...
Taking error and error rate of change as input, this paper realized the online slef-tuning of PID parameter with the method of fuzzy inference, and made a modeling design and simulation on the controller in the Matlab environment, and realized the non-linear processing to PID controller and the non-linear mapping between the changes of system characteristics and controlled variables. This hybrid system...
The measurement of parameters for obtaining the mathematical model of the Level process station has to make accurately so as to obtain satisfactory performance of the system. The subject of this paper is concerned with the precise level control of a Level process station. The mathematical modeling of the system is done and control law for fuzzy and fuzzy immune PID is established. The Simulink of...
The stable control of dissolved oxygen in biological wastewater treatment system is a typical large inertia, the longer lag time and a certain degree of uncertainty in the system. This paper analyzes the process of CAST wastewater treatment technology and establishes a model of dissolved oxygen control. The article analyses the underlying causes in instable control system by step response curve of...
In this paper, the author establish a model of water-jet propulsion system for self-service gliding-hydrofoil craft. A fuzzy logic controller is designed based on MATLAB and SIMULINK. And simulation experiment is performed. Experiment results show that the fuzzy logic controller is useful and is affected by interference. And the less the interference, the more balanced the effect is.
This paper shows a strategy for the fuzzy logic control system using an offline simulated ball mill grinding approach. In this study, a step change in the force reference signal is considered a disturbance. The current study focuses on the design and implementation of a fuzzy logic control system for product flow rate of ball mill grinding process. The performance of the system is analyzed by simulating...
Designed a parameter self-tuning PID-controller based on fuzzy control, which can adjust PID-parameters according to error and change-in-error. A simulation study of the system shows that the controller possesses both the precise character of PID controller and the flexible advantage of fuzzy controller. It can eliminate the steady error of the system promptly.
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