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A fuzzy-logic-based robust adaptive fuzzy sliding-mode controller is designed for a class of uncertain nonlinear system of PM synchronous servo motor, which is composed of sliding-mode control and fuzzy adaptive control. The method proposed in this paper can approximate the uncertain items of system using fuzzy model, and parameter adaptive law of fuzzy model was constructed according to the principle...
Aiming at the rapidity control problem of direct drive electro-hydraulic (DDEH) servo rocket rudder, a design method of adaptive fuzzy sliding mode control with friction torque dynamic compensation is presented. The friction torque dynamic compensation method is introduced to enhance the response of the system. The adaptive fuzzy controller is introduced to solve the problem of the uncertain parameter...
Electro-hydraulic servo systems have been frequently used in the position servo system in industry and other relative field, because of their high power capability, fast response characteristics and good positioning capability. Hydraulic servo systems, however, inherently have many uncertainties, time varying and highly nonlinear characteristics due to the flow-pressure relationship, oil leakage,...
Internal model control (IMC) has been widely used because of its easily designed method and simple tuning policy. But better performance cannot be obtained when it is used in hydraulic servo system control directly because of the systemspsila uncertainties, time varying and highly nonlinear characteristics due to the flow-pressure relationship, oil leakage, oil temperature variation, load disturbances,...
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