共查询到19条相似文献,搜索用时 171 毫秒
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本文论述了自动调高系统对数控切割机的重要性,分析了数控火焰切割机自动调高系统设计的难点,设计了电容式自动调高系统的传感器和控制系统,并对整机测试结果做了分析。结果表明,本文所设计的电容式自动调高系统具有良好的稳定性,较高的精度和灵敏度,满足实际需求。 相似文献
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电机控制系统是数控火焰切割机自动调高器中的关键部件。提出了自动调高器中电机控制系统的方案,设计了基于单片机的PWM直流电机控制硬件电路,指出了本系统软件设计需解决的关键问题,并设计了相应的控制软件。该系统设计了一种实用新型的切割机自动调高系统,较好地解决了电机转动惯性对调高精度的影响。 相似文献
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分析数控火焰切割机自动调高系统的特点和要求,采用标准遗传算法对位置调节器PID参数进行全局优化,采用局部搜索能力很强的爬山法进一步进行最佳参数辩识.通过仿真表明,混合遗传算法寻优使自动调高系统的动态性能大幅提高,具有很强的鲁棒性. 相似文献
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介绍数控火焰切割机电容高度自动控制系统原理,用自制电容自动凋高系统取代易损坏的国产电容自动调高系统,提高功率输出部分可靠性的方法及试验结果。 相似文献
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调高系统作为数控火焰切割机的核心机构,其工作时的精度和灵敏性直接决定了数控火焰切割机的工作可靠性.针对目前数控火焰切割机在工作中存在的调节滞后性大、精度低下,严重影响切割效率和质量的问题,提出了一种新的智能高度调控装置.该装置采用了电容式闭环调节及电压负反馈调速,可实现对切割机高度的智能调控.根据实际应用表明,该系统能够将切割机高度调节精度提升86%以上,将调节速度提升72%,对提升切割效率和质量具有十分重要的意义. 相似文献
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本文介绍了一个适用于带三割炬的三轴联动平面钢板数控火焰切割机的CAD/CAM/CNC集成自动编程系统;论述了如何从AutoCAD系统中提取和处理被切零件的廓形数据;阐述了零件实体之间过渡圆弧的求法,火焰半径补偿的方法和适用于该数控火焰切割机的数控程序自动生成的原理。 相似文献
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A new adaptive controller for constant turning force 总被引:1,自引:1,他引:0
Y. S. Tarng Y. S. Wang 《The International Journal of Advanced Manufacturing Technology》1994,9(4):211-216
A new computerised adaptive control constraint (ACC) system in turning with a constant cutting force constraint is described in this paper. It is shown that the ACC control system based on the fuzzy linguistic rules can achieve an automatic on-line adjustment of feedrate to optimise the production rate even under the variation of cutting conditions in turning operations. 相似文献
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Based on the analysis of the principle and flame movement of a pipe cutting machine tool, a retrofit NC flame pipe cutting
machine tool (NFPCM) that can meet the demands of cutting various pipes is proposed. The paper deals with the design and implementation
of an open architecture CNC system for the NFPCM, many of whose aspects are similar to milling machines; however, different
from their machining processes and control strategies. The paper emphasizes on the NC system structure and the method for
directly creating the NC file according to the cutting type and parameters. Further, the paper develops the program and sets
up the open and module NC system. 相似文献
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N. A. Proskuryakov R. Yu. Nekrasov A. I. Starikov I. V. Solov’ev B. V. Barbyshev Yu. A. Tempel’ 《Russian Engineering Research》2018,38(3):220-222
Traditional approaches to improving the technological system of CNC metal-cutting machines include increasing the rigidity, periodic maintenance and repair of its components, and operating at lower speeds. In practice, the most economical approach is stabilization of the inputs to the system. The development of adaptive control systems with stabilization of the cutting forces improves the precision and quality of machining in CNC metal-cutting machines, the productivity, and tool life. However, classical PID controllers are only effective in stabilizing the cutting forces in such systems if continuous real-time parameter adjustment is possible. That sharply increases the complexity of the controller. A new mathematical apparatus based on artificial intelligence (including fuzzy logic) permits the solution of adaptive control problems that previously could hardly even be formulated. The present work addresses the use of fuzzy logic in automatic stabilization of the cutting force for CNC lathes. Simulation of a fuzzy controller shows that this approach to automatic stabilization of the cutting force increases the machining efficiency on existing equipment with indeterminacy in the characteristics of the cutting system and the working environment. 相似文献
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基于PMAC的数控火焰切割机数控系统开发 总被引:2,自引:0,他引:2
通过分析数控火焰切割机加工工艺的特点,开发了基于工业PC机和PMAC卡的数控火焰切割机数控系统,并对它的硬件和软件设计作了详细的论述,该数控系统已成功地应用于旧数控火焰切割机的改造中。 相似文献
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针对钢管定尺飞锯传统定长切割控制策略存在的问题,提出了采用模糊自适应PID的控制策略.控制器输入取钢管的定长切割偏差e和偏差变化率ec,输出取PID控制器3个参数的修正量,从而实现了PID参数的在线自整定.采用Matlab语言,进行了常规PID控制与模糊自适应PID控制动态性能的仿真比较.研究结果表明,采用模糊自适应P... 相似文献