共查询到20条相似文献,搜索用时 62 毫秒
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锰铁高炉对于锰铁提炼而言,是非常重要的装置设备,基于高炉自动上料系统,能够实时转变传统锰铁高炉上料模式,并有效控制炉顶与槽下,以保证上料的合理性与高效性,与锰铁高炉需要明确相符。基于PLC技术所设计的锰铁高炉自动上料控制系统,其软件主要包含上位机监控组态软件与下位机PLC编程软件,其中监控软件选用工业控制组态软件Win CC6.0作为主要载体进行软件开发,而编程软件则选用Siemens Step7 V5.3作为载体进行软件设计。实践证明,PLC技术视角下的锰铁高炉自动上料控制系统,能够在很大程度上优化系统的功能,提高上料效率与质量,进而实现锰铁行业的可持续稳定发展。 相似文献
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本文介绍了美国AB公司SLC500系列PLC及工控机在铜矿精矿联锁控制方面的应用。概述了系统的基本组成,分析PLC程序设计和工控机组态监控软件在应用中的几个典型问题。 相似文献
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Solar ponds hold the promise of providing an alternative to diesel generation of electricity at remote locations in Australia where fuel costs are high. However, to reliably generate electricity with a solar pond requires high temperatures to be maintained throughout the year; this goal had eluded the Alice Springs solar pond prior to 1989 because of double-diffusive convection within the gradient zone. This paper presents control strategies designed to provide successful high temperature operation of a solar pond year-round. The strategies, which consist mainly of manipulating upper surface layer salinity and extracting heat from the storage zone are well suited to automation. They were tested at the Alice Springs solar pond during the summer of 1989 and maintained temperatures in excess of 85°C for several months without any gradient stability problems. 相似文献
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Control of dynamic deformation of a piezothermoelastic beam with a closed-loop control system subjected to thermal disturbance is studied. To suppress the deformation due to the disturbance, the beam is subjected to the closed-loop control procedure where one of the piezoelectric layers serves as a sensor to detect the deformation due to the disturbance and the other as an actuator to suppress it. The analytical solution of the dynamic deflection is formulated based on the classical laminate theory. Using numerical examples, suppression of the transient oscillation due to thermal disturbance by a series of pulses of electric voltage is examined. 相似文献
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《内燃机与动力装置》2017,(2):22-25
本文介绍了一款针对某型柴油机需求而设计的船用柴油机控制柜。应用工控智能仪表、可编程控制器(PLC)的软/硬件功能,实现柴油机的自动监控功能,并且解决了工程实践中的一些问题。 相似文献
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《内燃机与动力装置》2015,(4):19-22
研究进气歧管长度对发动机性能影响,并针对某公司的两级式可变长度进气歧管,利用试验对其控制策略的研究,通过试验验证了可变长度进气歧管优于定长度进气歧管性。 相似文献
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This article deals with a stress control problem of a composite circular disk consisting of a structural layer onto which piezoceramic layers are bonded. When a heating temperature distribution acts on the bottom free surface, the maximum thermal stress in the structural layer can be controlled by applying electric potentials to electrodes concentrically arranged on each piezoceramic layer. The applied electric potentials are determined by solving an optimization problem so that the maximum thermal stress in the structural layer is minimized subject to constraints on the stresses in the piezoceramic layers. Finally, numerical results are presented. 相似文献
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《Energy Conversion, IEEE Transaction on》2009,24(2):406-414