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Целью данной выпуÑкной квалификационной работы ÑвлÑетÑÑ Ñ€Ð°Ñчёт и проектирование ÑиÑтемы автоматичеÑкого ÑƒÐ¿Ñ€Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð²Ð¾Ñ€Ð¾Ñ‚Ð° башни ÑкÑкаватора. Ð”Ð°Ð½Ð½Ð°Ñ Ñ€Ð°Ð±Ð¾Ñ‚Ð° будет полезна при изучении вопроÑов раÑчета ÑиÑтем автоматичеÑкого ÑƒÐ¿Ñ€Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ñ Ð¼Ð°ÑˆÐ¸Ð½Ð½Ñ‹Ð¼ или дроÑÑельным управлением и имеющим вращательный характер Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð½Ð°Ð³Ñ€ÑƒÐ¶Ð°ÑŽÑ‰ÐµÐ³Ð¾ объекта. Ð’ работе предÑтавлены ÑнергетичеÑкий раÑчет Ñилового и управлÑющего каÑкадов ÑиÑтемы автоматичеÑкого ÑƒÐ¿Ñ€Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ñ Ð²Ñ‹Ð±Ð¾Ñ€Ð¾Ð¼ оÑновного Ð³Ð¸Ð´Ñ€Ð¾Ð¾Ð±Ð¾Ñ€ÑƒÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð»Ñ Ð½Ð¸Ñ… (выбор наÑоÑа и иÑполнительного гидродвигателÑ), и поÑтроены их ÑтатичеÑкие характериÑтики. СоÑтавлена Ð¿ÐµÑ€ÐµÐ´Ð°Ñ‚Ð¾Ñ‡Ð½Ð°Ñ Ñ„ÑƒÐ½ÐºÑ†Ð¸Ñ Ñ€Ð°Ð·Ð¾Ð¼ÐºÐ½ÑƒÑ‚Ð¾Ð³Ð¾ контура ÑиÑтемы, на оÑнове которой поÑтроены динамичеÑкие характериÑтики. ИÑÑ…Ð¾Ð´Ñ Ð¸Ð· полученных динамичеÑких характериÑтик, проведён анализ ÑиÑтемы на предмет уÑтойчивоÑти и точноÑти. С целью Ð²Ñ‹Ð¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ñ‚Ñ€ÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ð¹ уÑтойчивоÑти и точноÑти была проведена поÑÐ»ÐµÐ´Ð¾Ð²Ð°Ñ‚ÐµÐ»ÑŒÐ½Ð°Ñ ÐºÐ¾Ñ€Ñ€ÐµÐºÑ†Ð¸Ñ. ИÑÑледован переходный процеÑÑ Ð¸ произведена его оценка (его характер и длительноÑть). Ð’ результате Ñпроектирована уÑÑ‚Ð¾Ð¹Ñ‡Ð¸Ð²Ð°Ñ ÑледÑÑ‰Ð°Ñ ÑлектрогидравличеÑÐºÐ°Ñ ÑиÑтема поворота башни ÑкÑкаватора, удовлетворÑÑŽÑ‰Ð°Ñ Ñ‚Ñ€ÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñм заданиÑ.
The purpose of this final qualification work is the calculation and design of an automatic control system for turning the excavator tower. This work will be useful in studying the issues of calculating automatic control systems with machine or throttle control and having a rotational character of movement of a loading object. The paper presents the energy calculation of the power and control cascades of the automatic control system with the choice of the main hydraulic equipment for them (the choice of the pump and the hydraulic actuator), and their static characteristics are constructed. The transfer function of the open loop of the system is compiled, on the basis of which the dynamic characteristics are built. Based on the obtained dynamic characteristics, the system is analyzed for stability and accuracy. In order to fulfill the requirements of stability and accuracy, a sequential correction was carried out. The transition process is investigated and its assessment is made (its nature and duration). As a result, a stable tracking electro-hydraulic system for turning the excavator tower, satisfying the requirements of the task, was designed.
ÑлекÑÑогидÑавлиÑеÑÐºÐ°Ñ ÑледÑÑÐ°Ñ ÑиÑÑема, динамиÑеÑкие Ñ Ð°ÑакÑеÑиÑÑики ÑиÑÑемÑ, automatic control system, dynamic characteristics of the system, гидÑопÑивод Ñ Ð´ÑоÑÑелÑнÑм ÑпÑавлением, логаÑиÑмиÑеÑкие Ñ Ð°ÑакÑеÑиÑÑики ÑазомкнÑÑого конÑÑÑа, анализ пеÑÐµÑ Ð¾Ð´Ð½Ð¾Ð³Ð¾ пÑоÑеÑÑа, ÑиÑÑема авÑомаÑиÑеÑкого ÑпÑавлениÑ, гидÑопÑивод Ñ Ð¼Ð°ÑиннÑм ÑпÑавлением, electric hydraulic following system, hydraulic drive with machine control, hydraulic drive with throttle control, analysis of the transition process
ÑлекÑÑогидÑавлиÑеÑÐºÐ°Ñ ÑледÑÑÐ°Ñ ÑиÑÑема, динамиÑеÑкие Ñ Ð°ÑакÑеÑиÑÑики ÑиÑÑемÑ, automatic control system, dynamic characteristics of the system, гидÑопÑивод Ñ Ð´ÑоÑÑелÑнÑм ÑпÑавлением, логаÑиÑмиÑеÑкие Ñ Ð°ÑакÑеÑиÑÑики ÑазомкнÑÑого конÑÑÑа, анализ пеÑÐµÑ Ð¾Ð´Ð½Ð¾Ð³Ð¾ пÑоÑеÑÑа, ÑиÑÑема авÑомаÑиÑеÑкого ÑпÑавлениÑ, гидÑопÑивод Ñ Ð¼Ð°ÑиннÑм ÑпÑавлением, electric hydraulic following system, hydraulic drive with machine control, hydraulic drive with throttle control, analysis of the transition process
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