外文翻譯--蒸汽發(fā)生器水位模糊控制研究-全文預(yù)覽
【正文】 ling time, steady degrees. V. CONCLUSION This paper designed a water level fuzzy control system aimed at steam generator?s characteristics of large time delay and model uncertainty. We also gave a simulation to the steam generator of Qinshan nuclear power plant, and achieved satisfactory results. The method can also be used for other large time delay and timevarying process control model, and has broad application prospects. 譯文 蒸汽發(fā)生器水位模糊控制研究 蒸汽 發(fā)生器是壓水反應(yīng)堆式核電廠里的一個(gè)重要的設(shè)備。 when the error is small, the output control volume should givepriority to prevent overshoot. Where ec is negative ,it shows that water level has a rising trend, if the water level is high at this time, then we should reduce the valve opening signal。 GW (s) for the impact of the water flow to the steam generator water level。中文 2064 字 Research on Fuzzy Control for Steam Generator Water Level I . INTRODUCTION The steam generator is one of the main devices in PWR nuclear power plant, in order to ensure the safety of nuclear power plant during operation。 QS for the steam flow。 the bubble volume on the liquid surface increases, causing the water level increased. Comprehensive two factors, after the step increase of the steam flow rate, the water level down has a time delay process, showing a up then down. The impact on the water level of water flow or steam flow stepping decreased has similar principle as above. As analysis can be seen as above, when the water flow or steam load change, the water level did not follow the change immediately, but there is an opposite process at first. This phenomenon is called false water level phenomenon. III. DESIGN OF WATER LEVEL FUZZY CONTROLLER The conventional PID controller has a poor control performance to the steam generator that exist“ false water level” characteristics, showing a greater overshoot in the tracking time. But a welldesigned fuzzy controller is able to overe the false water level phenomenon, and has good control performance. A. Sstructure of Fuzzy Controller The structu
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1