Program-technical system of cascade regulation of temperature with model of object's state
Jazyk: | ruština |
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Rok vydání: | 2022 |
Předmět: | |
DOI: | 10.18720/spbpu/3/2022/vr/vr22-2752 |
Popis: | Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ : «ÐÑогÑаммно-ÑÐµÑ Ð½Ð¸ÑеÂÑÐºÐ°Ñ ÑиÑÑема каÑкадного ÑегÑлиÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑемпеÑаÑÑÑÑ Ñ Ð¼Ð¾Ð´ÐµÐ»ÑÑ ÑоÂÑÑоÑÐ½Ð¸Ñ Ð¾Ð±ÑекÑа». ЦелÑÑ ÑабоÑÑ ÑвлÑеÑÑÑ Ñоздание блоÑной Ñепловой модели ÑиÑÑÐµÐ¼Ñ Ð²ÐµÐ½ÑилиÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð¼ÐµÑениÑ. ÐÐ¾Ð´ÐµÐ»Ñ Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ Ð¿Ñименена в каÑеÑÑве обÑÂекÑа ÑпÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ñи иÑпÑÑании и наладке ÑпÑавлÑÑÑÐ¸Ñ ÑиÑÑем. РаÑÑмоÑÑÐµÐ½Ñ Ð¾ÑновнÑе напÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð² ÑаÑÑÑÑе Ñеплообменников Ñ Ð¿ÐµÂÑекÑÑÑÑнÑм Ñоком ÑеплоноÑиÑелей. ÐÑи ÑÑой оÑенке вводилиÑÑ Ð² ÑаÑÑмоÑÑеÂние нелинейнÑе ÑлеменÑÑ, иÑполÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¾ÑеÑеÑÑвеннÑй и заÂÑÑбежнÑÑ ÑÑÑнÑÑ . ÐÑи Ñоздании ÑеÑмиÑеÑкой модели помеÑÐµÐ½Ð¸Ñ Ð¸ÑполÑзоÂвана ÑлекÑÑиÑеÑÐºÐ°Ñ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¸Ñ ÑеÑмиÑеÑÐºÐ¸Ñ ÑопÑоÑивлений и ÑмкоÑÑей. ÐодеÂлиÑование обÑекÑов венÑилÑÑии пÑоводилоÑÑ Ñ Ð¸ÑполÑзованием аналиÑиÑеÂÑÐºÐ¸Ñ Ð·Ð°Ð²Ð¸ÑимоÑÑей. Ð Ñ Ð¾Ð´Ðµ ÑабоÑÑ ÑаÑÑмоÑÑÐµÐ½Ñ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ñ Ðº моделиÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑепловÑÑ Ð¿ÑоÑеÑÑов. ÐÑÐµÐ½ÐµÐ½Ñ ÑезÑлÑÑаÑÑ ÑабоÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑеплоÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð½Ð° оÑнове ÑеалÑнÑÑ Ð¿Ð¾Ð³Ð¾Ð´Ð½ÑÑ Ð´Ð°Ð½Ð½ÑÑ . Ð ÑезÑлÑÑаÑе полÑÑена ÑепловÑе модели помеÑÐµÐ½Ð¸Ñ Ð¸ ÑекÑпеÑаÑоÑа, коÑоÑÑе могÑÑ Ð±ÑÑÑ Ð¸ÑполÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð² каÑеÑÑве обÑекÑов ÑпÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ñи иÑÂпÑÑании ÑпÑавлÑÑÑÐ¸Ñ ÑиÑÑем. Subject matter of my graduation thesis: "Program-technical system of cascade regulation of temperature with model of object's state". The purpose of work is creation of block thermal model of ventilation system of the premise. The model can be applied as a control object during testing and adjustment of control systems. The main trends in the calculation of cross-current heat exchangers have been considered. At this evaluation nonlinear elements have been introduced in consideration and proposals of domestic and foreign scientists have been used. At creation of thermal model of a premise the electric analogy of thermal resistances and capacities was used. Modelling of ventilation objects was carried out using analytical dependencies. In the course of work, the approach to modelling thermal processes has been considered. The results of room heat model operation on the basis of real weather data have been evaluated.As a result thermal models of a premise and the recuperator which can be used as control objects at test of control systems are received. |
Databáze: | OpenAIRE |
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