共查询到20条相似文献,搜索用时 250 毫秒
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本文介绍的点焊质量监控器,以电极电压为被监测参数,当电极电压超出上、下临界值时,可发出声光报警信号。监控器可对点焊通电周波数作出准确的测定并进行数字显示。文中详细介绍了监控器的各部分工作原理。 相似文献
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本文介绍的点焊质量监控器,以电极电压为被监测参数,当电极电压超出上、下临界值时,可发出声光报警信号。监控器可对点焊通电周波数作出准确的测定并进行数字显示。文中详细介绍了监控器的各部分工作原理。 相似文献
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微机控制的各种阻焊质量监控器的基本原理及方法 总被引:8,自引:1,他引:8
现代阻焊质量监控器几乎均采用了微机控制,出现了多种类型和方法的监控器。本文较为全面、详细地介绍了微机控制的各种恒流法、热膨胀电极位移法及动态电阻法三类监控器的基本原理及方法,文中还简要介绍了微机在阻焊中其它方面的应用。 相似文献
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对传感器的设计、制作时应注意的问题进行了讨论,分析了微机控制的各种阻焊质量监控器的基本原理和方法。 相似文献
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基于MATLAB神经网络工具箱的BP神经网络状态监控器 总被引:2,自引:0,他引:2
介绍了MATLAB神经网络工具箱的主要函数与算法,并基于MATLAB神经网络工具箱,设计了BP神经网络状态监控器,应用线性回归分析对其进行了校验,同时以实例验证了其有效性和正确性。 相似文献
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45钢制传感器是高速公路交通监控器上的关键部件之一,因常期受到雨浸潮湿空气腐蚀,故应采取防锈措施。但因其形状、接口尺寸等技术要求,难以实施电镀,故此,我们研究了 相似文献
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A real-time error compensation system has been developed to reduce the cutting force induced planar error of a two-axis turning center by using sensing, metrology, modeling, and computer control techniques. Ten error components are formulated as a two-dimensional error field. A piezoelectric force sensor mounted in the pocket under the tool turret is used to characterize the cutting forces. A compensation controller based on an IBM/PC has been linked with the existing computer numerical controller (CNC) to correct machine errors in real time. Three different types of cutting tests were performed and the results showed that the maximum diameter error in the workpiece was reduced by 67–85% using this compensation system. 相似文献
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《稀有金属材料与工程》2011,(Z4):79-83
The problem of digital controlling of high frequency microplasma arc welding machine has been solved through Fujitsu 16-bits single-chip processor used.Digital welding power sources and their control systems,digital sequential control system,and digital man-machine interaction system were included in digital microplasma arc welding machine studied.Principles,which is about digital sequential control system,digital man-machine interaction system,digital controller and its interface,and controlling software program,were analyzed.It has been showed that full digitalization of high frequency microplasma arc welding machine was fulfilled,minimum welding current of the machine is 0.05A,and arc is stable and can been started unfailingly. 相似文献
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NC嵌入PC型开放式数控系统的研究和应用 总被引:1,自引:0,他引:1
本文从硬件和软件两方面探讨了NC嵌入PC型开放式数控系统的设计及研究,结合XK5030数控铣床,基于PC ADT850运动控制卡开发了一套开放式数控立式铣床系统。通过实验证明,该开放式数控系统能实时控制机床运动及实时显示机床状态,达到了预期的精度,并具备了开放式数控系统的开放性。 相似文献
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基于PLC的经济型龙门式数控钻床控制系统设计 总被引:1,自引:0,他引:1
以可编程控制器为核心,采用上位机、伺服控制器、传感器和液压技术,设计了经济型数控钻床控制系统,使数控钻床具备了精确定位、自动钻孔的功能。 相似文献
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A computer-aided error compensation scheme has been developed to enhance the accuracy of multi-axis CNC machine tools by compensating for machine geometric and thermal errors in software way. Stationary geometric errors including the coupling effect of linkage errors between machine slides are calibrated off line. Dynamic thermal errors are predicted on line by an artificial neural network model. Because machine errors are variant with the cutting time and slide positions, a PC based compensation controller has been developed to upgrade commercial CNC controllers for real-time error compensation. The real-time compensation capability is achieved by digital I/0 communication between the compensation controller and CNC controller without the need of any hardware modification to the machine servo-drive loops. The compensation scheme implemented on a horizontal machining center has been proven to improve the machine accuracy by one order of magnitude using a laser interferometer and cutting test. 相似文献
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以磁瓦机械手为研究对象,以ARM11+Win CE6.0为上层控制器,以ARM11+μC/OS-II+FPGA为下层控制器,运用RS-485总线进行数据、状态和控制命令的传输。提出了一种在磁性材料行业专用的悬臂式磁瓦机械手控制系统设计方案,其上位机与下位机进行通信,并将机械手与压机联机,验证了悬臂式磁瓦机械手控制系统的可行性和先进性。将该系统投入使用,结果表明:该系统实用可靠、运行良好,实现了预期的功能要求。 相似文献