| Summary: | 碩士 === 國立臺灣科技大學 === 機械工程系 === 89 === The variable-displacement hydraulic motor operated by an ideally constant pressure source, is called a secondary controlled hydraulic drive. This modern hydrostatic rotary drive combines the advantages of high system efficiency, excellent dynamic behavior and energy recovery capability. Normally, hydraulic servo system is a nonlinear and time -variant system, which is difficult to estimate its dynamic model. The objective of this thesis is to study the motor speed control performance of proportional controller、self-organizing fuzzy controller and neural network controller. To compare with adaptive control algorithms, these three controllers can skip the process of parameter identification. Finally, the experiments of step response, sinusoidal response, variable inertia load and the external torque disturbance would be applied to examine the feasibility and adaptation of three controllers.
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