基于单片机的焊接机器人设计和实现

为了实现自动化焊接,降低焊接成本,现以“单片机”应用为例,文中设计了一款功能强大、实用性强的焊接机器人。首先,在完成单片机控制器系统设计的基础上,从底座设计、基座设计、伺服电机设计、旋转机构设计、控制面板设计等方面入手,完成机器人结构设计;其次,结合机器人工作原理,从电流信号滤波处理模块、焊缝偏差信息识别模块、焊缝纠偏控制模块、显示模块等模块出发,完成对机器人功能模块的科学设计;最后,介绍了该机器人的应用优势。结果表明：在单片机的应用背景下,文中设计的焊接机器人运行正常、可靠、稳定,各个功能模块实现满足设计相关要求。希望通过本研究为相关人员提供有效的借鉴和参考。     

基于MC9S12XS128单片机的手工焊机参数采集装置设计与研究

文中手工焊机参数采集装置是以MC9S12XS128单片机为核心的控制电路,该设备能够显示焊机焊接过程中的焊接电流、电弧电压和焊接时间等焊接工艺参数,通过单片机运算得到热输入。本装置共涉及到6个模块:装置供电模块、电信号采集模块、电信号处理模块、单片机控制模块、协议转换模块和人机交互模块。其中电信号采集模块通过霍尔传感器实现,电信号处理模块通过LEM258D芯片实现,单片机控制模块通过MC9S12XS128单片机实现,协议转换模块通过ISL83082E芯片实现,人机交互模块通过昆仑通态触摸屏实现。     

基于ZigBee和LabVIEW的多地无线温湿度监测系统设计

介绍了基于Zig Bee和Lab VIEW技术的多地无线温湿度监测系统设计方法。系统由以STC89C52RC单片机、ZigBee无线数据收发模块DRF1605H为核心构成的温湿度测量和无线数据传输以及基于Lab VIEW的监测界面与程序组成。无线数据收发模块与单片机、监控PC间采用串行通信,实现温湿度测量、监测与报警。实验结果表明:系统能准确地、同步地实现现场的、远程的多地温湿度监测和报警,运行稳定可靠。     

基于CAN总线的设备运行状态远程监控系统通讯的实现

介绍了一种基于CAN总线的设备运行状态远程监控系统,阐述了其通信功能的实现。通过搭建系统上位机监控远程管理平台、下位机智能节点模块的软硬件和完成编写CAN总线通信协议,实现了通信功能。本系统在实验室通过了验证,证实其能有效监控设备的运行状态,进而保障了系统安全稳定运行。     

砂型铸造中树脂砂高温性能检测系统研究

为了有效分析砂型铸造中树脂砂的各项高温参数,设计了一种树脂砂高温性能检测系统。该系统采用C8051F350单片机对压力传感器和电磁阀进行实时数据采集和控制。上位机通过串口模块与单片机进行数据通信。在Eclipse环境下采用JAVA语言对系统的界面和数据处理功能进行了具体实现。结果表明,提出的树脂砂高温性能检测系统运行良好、稳定,对提高砂型铸造生产工艺和铸件质量具有较好的指导意义。     

液晶显示模块QH2001在电焊机设计中的应用

首先介绍液晶显示模块QH2001的原理和功能，然后介绍了它与单片机组成电子系统在电焊机设计中的应用，最后给出了液晶显示模块的初始化程序以及与控制器的交互程序。在电焊机中引入液晶显示模块，能够实现对焊接工艺参数的设置、修改、保存和调用，实时显示焊接参数、与上位机通信、故障报警等功能，同时也便于扩展。且液晶显示模块本身具有显示灵活、使用方便、价格便宜等优点。经过实验测试，该系统显示稳定，抗干扰能力强，人机界面友好，操作方便。     

基于MCS51单片机的现场数据采集模块设计

根据监控系统设计时传感控制器件对数据采集模块端口组合类型及工作参数的需求不定的情况,经过对现场采集模块工作机理分析,提出了以MCS51单片机为控制器,模块端口可以根据需求定制的现场数据采集模块的设计方案并对其实例化.应用实践表明应用该方案设计的模块运行性能稳定,可以满足控制现场的要求.解决了控制系统设计过程中数据采集模块与传感控制器件之间不匹配的难题.     

新型液动快件自动化分拣装置设计

为了加快物流分拣的自动化程度,设计一种新型液动快件自动化分拣装置,利用三维软件UG建立该装置的整体结构示意图,详细介绍了该装置中的托盘机构,利用液压控制回路控制托盘的运动。同时,利用单片机模块控制托盘的三工位动作,实现托盘左、右倾斜和复位,并对该装置中的液压动力装置模块、电机运动控制模块进行详细介绍。试验结果表明,该装置能够满足快件自动化分拣,具有结构简单、运行稳定、效率高、成本低等特点。     

三偏心蝶阀等离子喷焊设备的研制

根据三偏心蝶阀喷焊的技术要求和等离子喷焊设备的发展趋势，研制出三偏心蝶阀自动跟踪等离子喷焊设备。主电路采用2台IGBT逆变焊机作为等离子喷焊主弧与维弧电源。控制系统采用双机控制，可编程控制（PLC）实现喷焊工艺控制，单片机80C196KC进行实时跟踪控制。设备性能测试和蝶阀喷焊结果表明：该设备设计合理、运行稳定、可靠．喷焊质量优良。     

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  基于51单片机的数据采集系统采集不同传感器的数据,反映输气管道受地质灾害威胁情况。采集的数据通过基于手机网络的无线传输模块上传到服务器。本文主要介绍了设计过程中采取的降低功耗的措施。系统设置在野外,该系统实现了长期远程无人值守情况下的稳定运行。     

等离子喷涂设备的PLC自动控制

介绍了等离子喷涂设备的组成及技术要求,分析并设计了等离子喷涂的电路图及工作程序流程图。以西门子公司S7—200可编程控制器为中心元件,设计了等离子喷涂设备的PLC自动控制系统。该系统具有操作方便、可靠性高、工作电流稳定性好的特点,控制功能和精度优良,可喷涂各种合金及陶瓷粉末,喷涂效果理想。     

Enhancement of Functional Ceramic Coating Performance by Gas Tunnel Type Plasma Spraying

A high-precision plasma system has been pursued for advanced thermal processing. The gas tunnel type plasma jet device developed by the author exhibits high energy density and also high efficiency. Among its various applications is the plasma spraying of ceramics such as Al₂O₃ and ZrO₂. The performance of these ceramic coatings is superior to conventional ones. Properties such as the mechanical and chemical properties of the zirconia coatings were reported in previous studies. In this study, the enhancement of the performance of functional ceramic coatings by the gas tunnel type plasma spraying method was carried out using different powders. Results show that the alumina/zirconia composite system exhibited improvements of mechanical properties and corrosion resistance. The alumina/zirconia composite coating has the potential for use as a high functionally graded thermal barrier coating. Another application of the gas tunnel type plasma is for surface modification of metals. As an example, TiN films were formed in 5 s and, thick TiN coatings were easily obtained by gas tunnel type plasma reactive spraying.     

益昌1220mm冷轧机组控制模型软件的开发

介绍了益昌1220mm冷连轧机组二级计算机过程控制模型软件的构成及功能;提出了过程控制软件的设计思想和步骤;同时介绍了二级计算机与一级和三级计算机的连接及其数据流程,可为现有冷连轧机组的改造提供参考。     

基于MCGS工控软件的废水处理自动控制系统

搭建了一个造纸废水处理实验系统。该系统在一体化造纸废水处理设备基础上,通过采用工业控制机作为上位机,可编程逻辑控制器（PLC）作为下位机,配以相关的数据采集模块、在线COD和泥位计等检测仪器,在组态软件MCGS的开发环境下开发的造纸废水处理软件管理下,实现了整个系统的自动控制。为进一步研究及构建造纸废水处理的智能控制系统奠定了基础。     

大功率低纹波等离子喷涂斩波电源研制

等离子喷涂电源通常采用可控硅整流电源或逆变电源,存在效率低、输出电流纹波大等问题,难以满足等离子喷涂工艺的特殊要求.文中提出了一种基于八相交错并联Buck变换器的大功率等离子喷涂斩波电源.首先设计了斩波电源的电路拓扑,分析了斩波电源的工作原理和电流纹波产生机理,阐明了并联相数、占空比对电流纹波的影响规律,并进行了仿真验证.然后,基于等离子喷涂工艺对电源特性的要求,设计出功率为40 kW的四相交错并联模块,在CAN总线协同控制下,组成80 kW的八相交错并联斩波式等离子喷涂电源.最后,搭建了等离子喷涂斩波电源样机,进行了喷涂试验,测试了电源的输出纹波和效率.试验结果表明,与传统的可控硅整流电源和逆变电源相比,斩波电源的电流纹波率降低50%以上,电源效率最高达到94.5%.     

等离子喷涂改善秸秆压块机模块耐磨性的研究

针对当前秸秆压块机模块耐磨性差、易失效等问题,分析了模块失效机理,提出了采用等离子喷涂改善模块表面性能。通过试验,研究了电压、电流及喷涂距离等因素对材料耐磨性的影响,优化了等离子喷涂工艺参数。结果表明:喷涂电流的影响最为显著,其次是喷涂距离;等离子喷涂Ni60+50WC涂层后,试样的抗磨损性能大幅提高。     

Modelling the Plasma Jet in Multi-Arc Plasma Spraying

Particle in-flight characteristics in atmospheric plasma spraying process are determined by impulse and heat energy transferred between the plasma jet and injected powder particles. One of the important factors for the quality of the plasma-sprayed coatings is thus the distribution of plasma gas temperatures and velocities in plasma jet. Plasma jets generated by conventional single-arc plasma spraying systems and their interaction with powder particles were subject matter of intensive research. However, this does not apply to plasma jets generated by means of multi-arc plasma spraying systems yet. In this study, a numerical model has been developed which is designated to dealing with the flow characteristics of the plasma jet generated by means of a three-cathode spraying system. The upstream flow conditions, which were calculated using a priori conducted plasma generator simulations, have been coupled to the plasma jet simulations. The significances of the relevant numerical assumptions and aspects of the models are analyzed. The focus is placed on to the turbulence and diffusion/demixing modelling. A critical evaluation of the prediction power of the models is conducted by comparing the numerical results to the experimental results determined by means of emission spectroscopic computed tomography. It is evident that the numerical models exhibit a good accuracy for their intended use.     

Plasma spraying system with distributed controlling

0　IntroductionPlasmasprayingisahighqualitymethodofsurfacetreatment,whichhasmanyrelatedfactorswiththestabilityofsprayingprocessandcoatingquality ,andbecauseofitscom plicatedtechnologicalprocess,theusageislimitedtoagreatextent.Presently ,torealizetheautomaticcontrolofsprayingisthebasicchannelofsimplifyingoperationandimprovingcoatingquality .However,theobjectiveconditionsofsprayingprocesseliminatethepossibilityofcontrolwithasingleunit.Thus,thedistributedcontrolsystemisestablished ,withwhichtheop…     

Inclusion of aerodynamic non-equilibrium effects in supersonic plasma jet enthalpy probe measurements

Low pressure plasma spraying (LPPS) is a thermal spraying technique that has found a niche for low oxidation products. It uses a low pressure environment (i.e., chamber pressure between 2 and 90 kPa) and yields supersonic plasma jets. The enthalpy probe technique is a common measurement method in plasmas. However LPPS jets are difficult to diagnose as their supersonic nature forces the apparition of a shock wave in front of any measuring device inserted in the jet. Incomplete or erroneous assumptions are usually invoked to overcome the difficulties associated with this shock wave and carry out the LPPS jet diagnosis from enthalpy probe measurements. In this work, a new device is designed to gain access to an additional physical quantity, which is needed to assess the aerodynamic non-equilibrium state of the jet. It is combined with enthalpy probe measurements, and the resulting set of experimental data is used with a numerical procedure based on gas dynamics theory, yielding free-stream supersonic plasma jet values from the measurements behind the induced shock wave. The results agree well with the phenomenology of supersonic jets in aerodynamic nonequilibrium. However this new method is restricted by the local thermodynamic equilibrium assumption, which is directly linked with the pressure and temperature conditions of the plasma jet.     

基于虚拟仪器的电机控制保护器自动测试技术研究

针对电机控制保护器保护功能多、对检测装置电流调节范围宽和精度高的要求,将粗调调压器与微调调压器结合构成大范围高精度电流恒流源,运用LabVIEW软件平台开发上位机数据采集、处理、显示和实时控制软件,用高精度数据采集卡、控制电路、驱动电路等构成基于虚拟仪器技术的电机控制保护器高性能全自动检测装置。实际应用表明:该系统解决了传统测试方法精度差、效率低的缺点,具有良好的推广前景。