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In order to meet the requirements of hydraulic servo control technology, the structural parameters of the hydraulic flapper-nozzle of the water hydraulic servovalves are studied. By theoretical analysis, the simulation conditions of the hydraulic flapper-nozzle valve are confirmed. Simulation method is used to analyze the diameter of nozzle straight tube and the diameter and length of nozzle hole...
In this paper, a model of VAV air supply system is established based on ventilation network, by which the model predictive control is used to control the VAV air supply system. Simulation tests of VAV air supply system under summer condition show that the structure of VAV air system, which is controlled by this control strategy is very stable and flexible, the control system has good performance....
Control of flow in duct networks has a myriad of applications ranging from heating, ventilation, and air-conditioning to blood flow networks. The system considered here provides vent velocity inputs to a novel 3-D wind display device called the TreadPort Active Wind Tunnel. An error-based robust decentralized sliding-mode control method with nominal feedforward terms is developed for individual ducts...
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