Zipeng Zhang

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Because insulator has complex operating environment and its infection factors have interaction, the diagnosis of insulatorpsila running state is very difficult. Fuzzy Petri net has better knowledge expression ability for designing dynamic knowledge expert system. Fuzzy Petri nets are used to design intelligent expert diagnosis system for insulatorpsila(More)
Often it is difficult to acquire the requisite knowledge in the design of rule-based control systems. In the study, an advanced knowledge acquisition technique was used to optimize fuzzy controller in the control of hydroelectric generating unit system of hydropower plant. The designed control system may select optimal scale factors, membership functions(More)
Conventional PID or fuzzy controller cannot get good controlling performance in the control of hydroelectric generating unit system, which is non-linear, varying with time, high steps system. In order to overcome the shortcoming of conventional fuzzy or PID controller, the fuzzy-PID composite control method is used to control it. The combining modes between(More)
Verifying the implementation of concurrent objects essentially proves the fine-grained implementation of object methods refines the corresponding abstract atomic operations. To simplify the specifications and proofs, we usually need auxiliary history and prophecy variables to record events occur historically and to predict the occurrence of certain events,(More)
Hydroelectric generating unit system of water plant is a non-linear and complicated system. Conventional controller cannot get good controlling performance in control. In this study, an advanced soft computing technique based on fuzzy, neural network and genetic algorithm is used in the control of hydroelectric generating unit system of hydropower plant.(More)
The environment of room temperature is complicated and it is difficult to get precise mathematics model for the control of air-condition with frequency change. It is difficult using conventional PID or general fuzzy control way to control air-condition to get good control performance. A new fuzzy controller is designed to control air-condition based on(More)
A high performance fully differential charge pump with reference voltage circuit was proposed to overcome the inevitable disadvantages in the traditional charge pump circuit, including leakage current, charged/discharge current mismatch and the output ripple. The phase errors and the spurious jump were reduced greatly, and the stability of the output was(More)
Conventional controller cannot get good controlling performance in the control of hydroelectric generating unit system because the system is non-linear and complicated. A new controller was designed based on fuzzy neural network to control hydroelectric generating unit. Fuzzy reasoning rules, member function and parameters may be trained on-line via neural(More)