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Следящий гидропривод возвратно-поступательного движения

выпускная квалификационная работа бакалавра

Следящий гидропривод возвратно-поступательного движения

Abstract

Тема выпускной квалификационной работы: «Следящий гидропривод возвратно-поступательного движения».       Данная работа посвящена проектированию электрогидравлической системы автоматического управления, выходным каскадом которой является гидравлический привод с дроссельным управлением и постоянным давлением у источника, исполнительным элементом которого является гидроцилиндр двустороннего действия с двусторонним штоком. В данной работе использовался метод теоретического анализа и знакового моделирования. В ходе работы были построены функциональная и принципиальная схемы. Проведен энергетический расчет параметров, выбрано оборудование (насос и гидроцилиндр) для обеспечения параметров, заданных в ТЗ. В результате были получены статические характеристики следящей системы и передаточные функции, соответствующие функциональной схеме. Выполнен динамический расчет, в ходе которого были построены логарифмическая амплитудно-частотная и логарифмическая фазово-частотная характеристики. Исходная система была скорректирована с помощью последовательной коррекции для обеспечения необходимых динамических свойств (точности и устойчивости). Были посчитаны добротности по скорости и ускорению и максимальная ошибка привода.

The subject of the graduate qualification work is «Closed-loop reciprocating motion hydraulic drive». This work is devoted to the design of an electrohydraulic automatic control system, the output stage of which is a hydraulic drive with throttle control and constant pressure at the source, the executive element of which is a double-acting hydraulic cylinder with a double-sided rod. In this work, the method of theoretical analysis and sign modeling was used. In the course of the work, functional and schematic diagrams were built. The energy calculation of the parameters was carried out, the equipment (pump and hydraulic cylinder) was selected to provide the parameters specified in the TOR. As a result, static characteristics of the tracking system and transfer functions corresponding to the functional scheme were obtained.A dynamic calculation was performed, during which logarithmic amplitude-frequency and logarithmic phase-frequency characteristics were constructed. The original system was adjusted using sequential correction to ensure the necessary dynamic properties (accuracy and stability). The Q-factors for speed and acceleration and the maximum drive error were calculated.

Keywords

энергетический расчет, динамический расчет, гидропривод возвратно-поступательного движения, transfer functions, hydraulic reciprocating drive, energy calculation, dynamic calculation, передаточные функции

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selected citations
These citations are derived from selected sources.
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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