面向液压机组的液压系统驱动控制方法研究

发布时间：2018-04-16 02:32

本文选题：液压机 + 液压系统　；参考：《合肥工业大学》2017年硕士论文

【摘要】：液压系统因为其本身的各种优良特性,自从应用以来,逐渐成为工业生产和人民日常生活中的重要基础组成部分,在各个行业都有着广泛的应用。以液压系统为核心的液压机也因为其负载能力大的特性,成为工业生产制造中重要的基础设施之一,而液压机能耗高和能量利用效率低的缺点逐渐成为人们关注的焦点之一,另外随着“绿色制造”和“低碳制造”的兴起,液压机的能耗也有了更高的要求。本文从多机控制的角度,探讨液压机的新的节能控制方法。首先分析液压机能耗在时间域上的变化情况和在空间域上的分布状况,建立液压机成形过程量化方程和液压机零部件效能分析模型,明确液压机的能量损失来源。其次,在能量损失的分析基础上,提出多机节能控制方法,解决导致液压机能耗较大的问题,提高液压机的能效。同时,建立多机节能控制方法下液压机的能耗模型和工作效率模型,从而衡量液压机在能耗和效率方面的表现。为了实施多机节能控制,提出驱动控制约束条件,并在约束下,给出“不重叠”控制策略和“压制区连续”控制策略,并分别建立相应的控制模型。另外,针对多个不同的策略选择问题,给出统一的评价体系,并以提出的两个控制策略为例进行研究。以某公司HY-Y30-16型液压机作为实验对象,分别获取其时间域上的能耗分布和其他工艺参数,以各个控制策略模型为计算基础,分别给出不同策略下的控制逻辑,并比较相对应策略的能耗和工作效率表现,证明了多机节能控制方法的节能效果和不同策略的适用场景,为方法的实际应用给出指导。
[Abstract]:Since its application, hydraulic system has become an important basic part of industrial production and people's daily life, and has been widely used in various industries.Hydraulic press with hydraulic system as its core has become one of the important infrastructure in industrial production because of its high load capacity, and the shortcomings of high energy consumption and low energy utilization efficiency of hydraulic press have gradually become one of the focuses of attention.In addition, with the rise of "green manufacturing" and "low-carbon manufacturing", the energy consumption of hydraulic press also has higher requirements.This paper discusses the new energy-saving control method of hydraulic press from the point of view of multi-machine control.Firstly, the variation of energy consumption in time domain and the distribution in space are analyzed, and the quantitative equation of forming process of hydraulic press and the efficiency analysis model of hydraulic press parts are established to determine the source of energy loss of hydraulic press.Secondly, on the basis of the analysis of energy loss, the energy saving control method of multi-machine is put forward to solve the problem that leads to the large energy consumption of hydraulic press, and to improve the energy efficiency of hydraulic press.At the same time, the energy consumption model and working efficiency model of hydraulic press under multi-machine energy-saving control method are established to measure the performance of hydraulic press in energy consumption and efficiency.In order to implement multi-machine energy-saving control, the constraint conditions of drive control are put forward. Under the constraints, the control strategies of "no overlap" and "continuous control in the suppression zone" are given, and the corresponding control models are established respectively.In addition, a unified evaluation system is given for many different strategy selection problems, and two control strategies are studied as an example.Taking the HY-Y30-16 hydraulic press of a certain company as the experimental object, the energy consumption distribution and other process parameters in the time domain are obtained, and the control logic under different strategies is given based on each control strategy model.By comparing the energy consumption and working efficiency of the corresponding strategy, the energy-saving effect of the multi-machine energy-saving control method and the applicable scenarios of different strategies are proved, which provides guidance for the practical application of the method.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG305

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