| Summary: | 碩士 === 逢甲大學 === 自動控制工程所 === 92 === It is difficult to achieve efficient control time variable and nonlinear hydraulic system with conventional PID controllers. A novel fuzzy PID controller and a fuzzy logic parameter regulator are presented in this paper for design and apply to plant of position control. The emphasis is mainly on the tracking performance. For such a reason, an advanced method to improve the tracking accuracy with low pass filter. In general, the actual electro-hydraulic servomechanism will usually have an unavoidable operating delay time in the solid valve. This may sometimes cause close-loop instability if it was not treated carefully in the control system designs. Therefore, in the proposed control system, an adaptable wavelet network compensator used to compensate for the reduced time delay.
In order to realize the proposed design and to evaluate the performance in practical applications, there is construct NI LabVIEW and DAQ card for a high-speed simulation platform with real-time capability. The SIMULINK simulation environment accompanied by LabVIEW Simulation Interface Toolkit（SIT）software package will used as a simulation platform on which a plant under controlled is constructed. Both simulation and experimental results are provided to show the effectiveness of the proposed method. .
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