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Гидравлический привод поворота башни экскаватора

выпускная квалификационная работа магистра

Гидравлический привод поворота башни экскаватора

Abstract

Целью данной выпускной квалификационной работы является расчёт и проектирование системы автоматического управления поворота башни экскаватора. Данная работа будет полезна при изучении вопросов расчета систем автоматического управления с машинным или дроссельным управлением и имеющим вращательный характер движения нагружающего объекта. В работе представлены энергетический расчет силового и управляющего каскадов системы автоматического управления с выбором основного гидрооборудования для них (выбор насоса и исполнительного гидродвигателя), и построены их статические характеристики. Составлена передаточная функция разомкнутого контура системы, на основе которой построены динамические характеристики. Исходя из полученных динамических характеристик, проведён анализ системы на предмет устойчивости и точности. С целью выполнения требований устойчивости и точности была проведена последовательная коррекция. Исследован переходный процесс и произведена его оценка (его характер и длительность). В результате спроектирована устойчивая следящая электрогидравлическая система поворота башни экскаватора, удовлетворяющая требованиям задания.

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.

Keywords

электрогидравлическая следящая система, динамические Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸ÐºÐ¸ системы, automatic control system, dynamic characteristics of the system, гидропривод с дроссельным управлением, логарифмические Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸ÐºÐ¸ разомкнутого контура, анализ Ð¿ÐµÑ€ÐµÑ Ð¾Ð´Ð½Ð¾Ð³Ð¾ процесса, система автоматического управления, гидропривод с машинным управлением, electric hydraulic following system, hydraulic drive with machine control, hydraulic drive with throttle control, analysis of the transition process

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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