【作者】 曹明；

【导师】 唐景林；

【作者基本信息】 燕山大学 ， 材料加工工程， 2007， 硕士

【摘要】 当前,液压技术在实现高压、高速、大功率、低噪声、高可靠性、高度集成化等方面都取得了重大进展,在完善发展比例控制、伺服控制、开发数字控制技术以及机电液一体化方面也有许多新成就。同时,随着科学技术的进步,以及对液压机性能和产品竞争力要求的提高,高效率、低能耗、高控制性能等正成为液压技术的主要发展动向。液压机微能耗压边节能原理的提出紧密结合了当今液压技术的发展动向,顺应了液压机的节能趋势。在查阅国内外相关资料基础上,针对板料拉深成形的压力机提出了以能量回收为主要实现途径的节能技术方案。本研究课题主要是研究如何将顶出缸(或压边缸)排出液体的压力能借助补偿缸,转化为主滑块的工作能而加以利用,以及压边压力伺服控制的实现及其性能。本文首先运用能量法推导了单动拉深液压机的两种压边方式即传统液压垫压边方式和液压垫-补偿缸压边方式的能量损失表达式,通过比较,得出后者在压边节能方面存在优势。运用MATLAB/SIMULINK对微能耗压边系统的两种简化物理模型,即阀控封闭容腔模型和阀控单出杆缸控封闭容腔模型进行数字建模、仿真,其结果表明该系统的快速性、稳定性等性能指标理想,且便于工程实现,有很好的应用前景。最后,开发LabVIEW系统控制程序并利用实验室现有设备,进行软、硬件结合,完成了微能耗压边系统的实验研究。通过对实验、仿真数据的分析和比较,证明微能耗压边系统具有较好的稳定性,符合控制性能要求。更多还原

【Abstract】 Presently, the hydraulic technology has all made the significant progress in the realization of high pressure, high speed, high efficiency, low noise, redundant reliability, high integration and so on, also has many new achievements on consummating the proportional control, the servo control, the numerical control technology as well as electro-hydraulic integration. Along with the progress of science and technology as well as in order to adapt the operation requirements of hydraulic press and strengthens itself competitive ability, the high efficiency, low-energy consumption, high controlled performance and so on are becoming the main development trend of the hydraulic technology.The principle of the low-energy consumption blank holding now closely accords with the hydraulic development trend and complied with the energy conservation tendency for the hydraulic press designs. After investigating some related material about domestic and oversease energy conservation, proposes the plan that take the energy recycling as the main realization question on sheet drawing forming press. The main purpose of this research topic is how to make the fluid pressure energy acquitted by the blank holding cylinder change into the work energy of the main gliding block under the servo-control. So that to achieve the goal of saving energy.This paper firstly presents the expressions of energy consumption in two types of blank holding, the conventional hydraulic cushion and cushion-compensating cylinder, in single-action deep-drawing hydraulic press, and shows through comparison that the consumption in later is far less than in the former.Using MATLAB/SIMULINK to mode and simulate the two kind of simplification model of the micro-energy consumption, the result indicates that the system rapidity, stability are extremely ideal and has very good applicationprospect.Finally, develops the LabVIEW control procedure and using the equipments that the laboratory already have to compose the micro-energy consumption blank holding test system. By comparing the experimental data and the simulation data, we know the stability of the system conform to the design requirement.更多还原