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针对开放式控制系统的特点,以工业平板电脑和PMAC(Programmable multiple-axis controller)为基础,构建开放式硬件控制系统,基于Visual C++6.0进行上位机控制系统软件开发。控制系统采用分级控制方式和模块化结构软件设计,上位机负责信息处理、路径规划、人机交互,下位机实现对各个关节的位置伺服控制,模块化软件设计便于增减机器人功能,使系统具有良好的开放性和扩展性。经示教再现实验和负重实验证明,机器人控制系统运行平稳,满足设计要求。 相似文献
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电解磨削加工参数集成控制的有效程度,很大意义上决定了其加工精度和加工效率。为实现对电解磨削运动参数、电解液参数和电源参数的有效集成控制,开发了NC嵌入PC开放式集成控制系统。根据电解磨削加工的特点,分析了电解磨削机床集成控制系统的总体设计要求,并据此进行了总体方案设计。阐述了以多功能运动控制卡和多功能数据采集卡为控制核心,工业平板电脑为人机交互平台的硬件结构。同时,利用Visual Basic进行了分层模块化结构的软件设计,实现了人机交互、自动控制和监测保护等功能。试验结果表明:该集成控制系统能稳定可靠地加工出高精度、低表面粗糙度的某微尺度群缝零件内平面。 相似文献
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脉冲熔化极气体保护焊(GMAW-P)焊接电源多采用数字控制技术,为保证焊机安全、可靠地运行,提高故障诊断的效率及可靠性,将分层控制一故障树故障诊断方法融人焊接电源设计中,针对焊接过程中可能出现的异常和故障情况,根据其危害等级的不同,进行分级并采用不同的处理方法和有效的指导原则,可以有效的节约数字控制处理器的软件资源,实现对异常的快速响应与处理,达到保护焊接电源的目的.构建了GMAW—P焊接电源故障树模型,分析了故障传播的逻辑关系,有效解决了故障诊断的层次化、有序化.结果表明,所设计的焊接电源的故障诊断系统容错性及适应性好,增强了故障检测与诊断的实时性和开放性,为焊接电源智能故障诊断开辟了新的途径. 相似文献
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单晶铜杆热型连铸微机自动控制设备的研制 总被引:1,自引:1,他引:0
热型连铸法是一种特殊的连续定向凝固技术,可用于单晶铸锭的制备.介绍了一种热型连铸法生产单晶铜杆的方法和设备,基于伺服控制及数模转换技术,用微机对生产过程进行自动控制,可以制备出表面光洁,且具有极好的延展性和导电性的单晶铜杆,具有很好的实用价值. 相似文献
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ANEXPERTCONTROLSYSTEMFORPURIFICATIONPROCESSWuMin,GuiWeihua,XieYongfang,ShenDeyao,CaiZixing(DepartmentofAutomaticControlEngine... 相似文献
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Metal-complex film with super-hydrophobic property is fabricated on copper (Cu) surface with one-step electrochemical method in laurylamine/ethanol solution. “Dissolution–coordination–precipitation” model is proposed to illuminate formation mechanism of Cu(II)-laurylamine complex film. The super-hydrophobic film can act as a barrier to corrosion of underlying copper with inhibition efficiency close to 100%, and it maintains stability within a wide potential range. The origin of such corrosion protection property is explained from view point that hierarchical micro-structure of the super-hydrophobic film can maintain a stable air/liquid interface which inhibits erosion of corrosive medium. 相似文献
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《Acta Materialia》2002,50(1):195-208
Strengthening due to small coherent BCC precipitates of copper is an important component of in-service irradiation hardening of ferritic pressure-vessel steels. The dislocation effects involved are studied here by atomic-scale computer simulation. Many-body interatomic potentials for the Fe–Cu alloy system are used to investigate stacking-fault-energy surfaces and to simulate the atomic structure of the <111> screw dislocation in both pure α-iron and the metastable BCC phase of copper. In iron, the core has the well-known three-fold form of atomic disregistry. In BCC copper, however, the core becomes delocalised by transformation of the copper as the lattice parameter is reduced to mimic the strain experienced by precipitates. Simulation of the screw dislocation threading through the centre of a BCC copper precipitate in an α-iron matrix shows that the extent of core delocalisation depends on precipitate size. The dislocation energy changes indicate a significant dislocation pinning effect due to this dislocation-induced precipitate transformation process. 相似文献
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The concept of autonomous mobile robots has already been implemented in some manufacturing fields; however, it is not yet effective in the field of shop floor logistics because issues linked to decision-making control remain. A contribution to this challenge is proposed in this study through an innovative hybrid control architecture in which mobile agents adapt their degree of autonomy by switching between hierarchical and heterarchical operating modes to dynamically face disturbances and absorb them. The focus is on operational manufacturing control and the navigation layer in hierarchical mode, where a consensus control algorithm is elaborated to reduce the instability with respect to the detailed schedule. Simulation results are provided to demonstrate the effectiveness of the proposed consensus algorithm. 相似文献
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铜及其合金因具有良好的热物理性能,在海洋工程、能源、航空航天、电子器件等领域有广泛的应用前景。制备铜基超疏水表面能够提高铜及其合金在各领域的应用性能,降低铜基金属的损耗,减少资源浪费。因此,超疏水表面在铜及其合金表面的制备和应用方面成为了研究热点。首先简单介绍了超疏水表面的相关理论,主要包括Young氏方程、Wenzel模型和Cassie-Baxter模型。其次,基于制备铜基超疏水表面的2个条件(提高材料表面粗糙度以及降低材料表面能),详细综述了铜基超疏水表面制备方法的研究进展,讨论了自组装、刻蚀、电化学沉积、激光复合加工等方法在制备铜基超疏水表面时存在的优势和主要问题,分析了制备方法对铜基超疏水表面应用性能的影响,列举了铜基超疏水表面在自洁、耐腐蚀、油水分离等方面的应用。最后,指出了铜基超疏水表面未来的发展方向,即通过制备具有自修复功能的超疏水表面或通过改变材料表面微纳米结构,提高铜基超疏水表面的耐磨性和稳定性。除此之外,工艺简单、成本低的铜基超疏水表面制备方法仍具有广阔的应用前景。 相似文献
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薄板坯连铸结晶器铜板的三维传热分析 总被引:2,自引:0,他引:2
建立了薄板坯连铸结晶器铜板的三维传热数学模型,特别是对结晶器铜板冷面的水槽和背板部分采用了交替配置不同的边界条件处理,利用Visual Fortran语言自编程序计算结晶器铜板温度场.通过对一典型薄板坯连铸结晶器铜板模拟分析,发现铜板热面温度呈现云层分布,冷面温度呈冰柱状分布.分析了各种工艺参数(拉速、铜板厚度、冷却水流速等)对结晶器铜板温度场的影响,典型位置上的计算结果与现场测量数据符合较好,为优化生产工艺参数和结晶器设计提供理论依据和实际参考数据. 相似文献
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FMS递阶分布式控制系统建模方法 总被引:3,自引:0,他引:3
为了使FMS控制软件系统具有简单性、可维护性、可重用性和开放性等特点,本文建立了递阶分布式控制体系结构;在此基础上,提出了FMS递阶分布式控制系统的分析和建模方法。为了使控制系统中各功能实体具有局部自治能力,同时具有统一的报文传输接口,提出了CORBA基础的FMS递阶分布式控制软件结构模型。为了证实本文提出的控制系统模型的正确性,在遵循CORBA规范的Orbix2.3e平台和VC++6.0的编程环境下开发了FMS控制软件,并在无锡职业学院的FMS中得到验证。 相似文献
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Yu. Zh. Tuleushev V. N. Volodin E. A. Zhakanbaev 《The Physics of Metals and Metallography》2013,114(7):573-579
Using the methods of ion-plasma sputtering and the coprecipitation of ultradispersed Ta and Cu particles, Ta-Cu film coatings have been obtained in the whole range of concentrations. The structural analysis supports the existence of copper solid solutions in -tantalum in the range of 1.5–82.4 at % Cu. The dynamics of the variation of the β-tantalum lattice parameters with increasing copper concentration is described. A computer simulation model for constructing the unit cell of copper solution in -tantalum is proposed. The resistivity of the samples of Ta-Cu alloys at room and liquid-helium temperatures is measured. The alloy obtained is established to possess a chemical resistance to a full-strength nitric acid up to 66.6 at % Cu. The dependence of the electrochemical potential of Ta-Cu coatings on copper concentration is studied. It is shown that the presence of minima at 73.7 at % Cu fairly well corresponds to acid-resistance threshold and is related to the binding-energy changes and to Cu atoms arrangement in β-Ta lattice upon transition from the tantalum-based solid solutions to the copper-based solutions. 相似文献
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EFFECTSOFTEMPERATUREONDISTRIBUTIONBEHAVIORSOFMINORELEMENTSINCOPPERFLASHSMELTING──COMPUTERSIMULATION¥TanPengfu;ZhangChuanfu(De... 相似文献
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现代计算机应用软件是工程设计与咨询、企业科学管理极为重要的先进工具。本文以铜闪速冶金NCC软件为例,介绍了其研发过程及定义、功能、应用实例。 相似文献