| In the recent years, the number of water diversion project of our country is gradually increasing; the situation of uneven distribution of water resources has been effectively improved. But the degree of automation and the diversion efficiency of water diversion project are not very good. With the progress of science and technology, it put forward higher requirements to automatic control of the water transfer system. This project designed a dynamic diversion experimental simulation system based on remote metering gates, presents a versatile, universal dynamic diversion control algorithm, it is important for the study of efficient automation control, Safe and stable operation of water Diversion Project.Completed the design and construction of an experimental model of water diversion project, include reservoirs, power pools, stilling basin, channels, back sink and so on. Depending on the canals flow and the security, accurate and economical of measurement completed the selection of pumps and flow meters. Diversion experimental model system not only provides proven model for the experimental study of control theory, but also provide an experimental platform for the study of future water transfer systems.Researched and improved the existing remote metering gate and circular flat gate, designed a small gate as the terminal equipment of the water transfer system. Completion strength and stiffness check of the door, beam and other important components. According to the design size and the load of work, completed the selection of reducer, motor, wire rope and other parts. Complete beam strength and stiffness calculations.Water transfer system automation control is the key content of this research. On the basis of in-depth study on control Model of water transfer system, drainage pond operation mode and existing control algorithm, combined with the design of water diversion project, complete the establishment of the mathematical models of water diversion system with Simplified St. Venant equations model; Use front brake normal water level operating mode as the mode of operation for the canal pool; use PI feedback control algorithm as the main control link. Combined feed forward and Decouple to improve system responsiveness.According to the determined control algorithm, complete the establishment of mathematical model of water diversion system in LabVIEW. complete control system simulation to verify the correctness of the algorithm. Using the test method to determine the PI parameters, provide the basis for the selection of the PI parameters in the late experiment. Use Visual Studio2010as development platform designed the interface and underlying program, completed the design of water diversion control system. |
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