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At present, PID controller is widely used, but when the controlled object is more complex, the control effect of the general PID controller is worse, in order to improve the control performance of complex systems, a new approach to design fuzzy PID controller is introduced in the paper. In order to improve the accuracy of control, the fuzzy adaptive PID controller is further advanced in the paper,...
In order to solve the slightly complicated structure and the big calculation of integral variable universe adaptive fuzzy controller, as well as the difficulty to choose the contraction-expansion factor, a weighted sum-type variable universe adaptive fuzzy controller is designed. At the same time the general method on how to choose contraction-expansion factor is given. First, based on weighted sum...
Through analyzing the control effect of three different controllers, such as PID, fuzzy control and fuzzy-PID, it was proved that fuzzy-PID parameters self-tuning controller can make central air-conditioning system get well dynamic and steady performance, Simulation results showed that the fuzzy-PID method can restrain its time delay,high inertia and non-linearity. Using fuzzy-PID parameters self-tuning...
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