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本文结合计算机集散控制系统(DCS)在太钢的应用实际情况综述了计算机集散控制系统(DCS)的历史,现状,发展,旨在进一步推进这一当代最先进的计控系统更广泛地应用。文中主要以传统以控系统为主阐述,必要时略提出电控系统。 相似文献
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介绍了宝钢研制的连铸机用矢量控制交流调速装置:采用带补偿的磁通闭环的转差频率法矢量控制,其中磁通、转矩观测模型较多地依赖于定子参数,避开了一阶惯性环节,易于实时计算,受电机参数的影响较小;利用新型马达控制专用微处理器8XC196MC,采用直接正弦脉冲宽度调制(DSPWM),简化SPWM设计,快速地实现电流的实时控制,使电流调节器具有良好的跟踪性能;同时,通过软硬件结合,监视各故障信号,及时进行相应 相似文献
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结合德兴铜矿的实践,介绍了矿体模型、露天矿优化设计的应用情况,较为详细地讨论了露天采矿计算机实时DISPATCH系统。 相似文献
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马钢原料场自动控制系统评介 总被引:1,自引:0,他引:1
马钢原料场自动控制系统采用GES90-70PLC网络和VAX机DECnet实现了设备级和过程级两级控制,完成原料存储、混匀、供料等管理和控制功能。 相似文献
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本介绍了一种基于“FDCS-网络”和工业控制微机IPC的布袋除尘计算机监控系统。并介绍了系统软件的特点,给出了软件结构框图。 相似文献
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根据矿山建设项目优化设计的需要,在AutoCADforWindows支持下,利用ADS(AutoCADDevelopmentSystem)开发计算机辅助采矿设计软件,文中介绍的CAD软件在北铭河矿山建设项目的优化设计中发挥了重要作用。 相似文献
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日本钢管京浜制铁所已经建成了以大规模DCS为基础以减少定员,优化源管理和使控制设施高可靠性为目标的能源完全集中控制的系统。该新控制系统是集成EIC系统,也就是将电力设备的控制(E),检测控制(I)和计算机(C)相互匹配组成的系统。系统由26个数字控制站,2个数据库站和3个过程计算机所组成,相互由光学局域网(LAN)统一联系起来。为了实现发电厂的最佳管理,转炉煤气柜的管理和预测3小时能量平衡,开发了 相似文献
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经过改造的2050mm热轧机煤气混合站控制系统。采用了澳大利亚西雅特公司的CMS型分布式控制系统。对煤气混合控制,热值纯滞后补偿,一次压力和二次压力控制, 大小管流量控制,加压机旁通流量控制等主要控制功能实现了优化和提高。在煤气混合热值控制及其热值纯滞后补偿功能中采用了重庆钢铁设计研究院的专利技术,其专利公开号分别为CN125957A和CN131757A。 相似文献
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铝箔高速高精轧制技术 总被引:2,自引:0,他引:2
铝箔高速高精轧制技术是我国铝箔生产发展的关键技术。本文从消除振动、改善板形、研制新型张力传感器、改变下位机控制策略,完善上位机控制功能和改进工艺、润滑等方面说明这一技术的研究内容。 相似文献
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作为现代轧机核心技术的板厚控制系统,其性能直接决定了轧制产品质量,提高该系统的控制性能具有重要意义。为此,建立了考虑延时环节的板厚控制模型,通过在Smith预估控制器的反馈回路串接低通滤波器对系统进行预估控制,用来对控制器进行补偿,以提高控制系统鲁棒性。针对改进后系统可调参数多,参数调整困难的问题,提出通过遗传算法程序进行PI控制器及滤波补偿器参数的整定。仿真研究结果表明,基于遗传算法参数寻优的Smith预估控制器低通滤波补偿算法提高了系统鲁棒性和系统控制精度,达到了期望的控制性能。 相似文献
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With an inclinometer casing mounted on a sheet pile wall in peat bogs, sheet pile wall deflections were measured during a trial deep dynamic compaction (DDC) test. Analyses of the trial testing data indicated that sheet pie wall deflections were significantly affected by the tamping distance, X, (horizontal distance between tamping points and sheet pile walls). The DDC-induced wall deflections can be simulated by an exponential relationship related to X. The trial testing results were verified by the finite-element (FE) simulation. The FE analyses indicated that sheet pile wall deflections were linearly proportional to the impact energy per blow, Ei. The analyses of surveyed data showed that sheet pile wall deflections due to DDC were also related to the ratio of the wall penetration depth in the underlying sands, dS, to the wall height, L. Based on these findings, a semiempirical approach, incorporating the key factors that govern the sheet pile wall deflections during DDC, was developed. The estimated wall deflections using this developed method were in reasonable agreement with the field measurements. 相似文献
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Total Heat Exchange Factor Based on Non-Gray Radiation Properties of Gas in Reheating Furnace 总被引:2,自引:2,他引:0
Modified mathematical models based on imaginary plane zone method in reheating furnace were developed in which non-gray radiation properties of gas were considered,and the Newton's method and the finite difference method were adopted.Effects of productivity,fuel consumption,fuel-air ratio,calorific value of fuel and inserting depth of thermocouple on total heat exchange factor along the length of reheating furnace were investigated.The resuits show that total heat exchange factor increases with productivity or inserting depth of thermocouple,and it decreases when fuel consumption,fuel-air ratio or calorific value of fuel increases.The results are valuable for dynamical compensation of total heat exchange factor for online control mathematical models in reheating furnace. 相似文献
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