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陶明 《有色冶金设计与研究》2015,36(3):66-68
以云锡某铜冶炼项目为例,分析了大型冶炼项目中多套生产控制系统和生产工艺设备自动控制装置实现网络连接的具体操作。实践证明,本项目中横河DCS多项目网络连接、横河DCS与小型成套设备通讯连接以及采取OPC通讯的方式实现与大型成套设备连接,均实现了工艺数据的实时数据采集上传,能满足生产工艺监控管理的需要。 相似文献
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质谱仪由很多模块组成,比如系统电源控制、透镜电源、数据采集以及真空测量等等,各个模块之间需要相互通讯。传统的数据通讯方式如RS232、RS485总线等,这些总线由于通讯速率、数据传输的可靠性等原因不太适合于质谱仪各个模块之间高速稳定的数据传输需要,因此,针对此不足,将工业控制领域成熟的控制器局域网(CAN)总线技术引入质谱仪的设计当中。该设计结合了ARM(Advanced RISC Machine)微处理器和高可靠性的CAN总线,在质谱仪内部既实现了点对点的数据传输,又可实现多点通讯的数据传输,最高通讯速率可达1MB/s,完全满足质谱仪器内部模块之间的通讯需求。该设计已成功用于质谱仪控制系统中,通过实验表明,该系统设计简洁、数据通讯稳定可靠。 相似文献
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Jun-ichi Kokado Natsuo Hatta Hirohiko Takuda Shiomi Kikuchi Tetsu Hirabayashi 《国际钢铁研究》1985,56(12):619-624
It has been ascertained whether or not the model capable of predicting the stress-strain relation of plain carbon steels, previously proposed, is applicable to the estimation of mill loads in the finishing process (consisting of six mill stands) of a hot strip mill. An appreciably good agreement with the predicted and measured mill load values has been obtained in the earlier passes where the strip microstructure is regarded to have completed static recrystallization, and the predicted mill loads in the later passes have been far less than the measured load owing to the effect of the strain accumulated in the previous rolling process. Then, a simple model to predict the accumulated strain has been constructed and introduced into the calculation of mill loads. As a result, the predicted mill loads have been fairly improved over the whole passes in the finishing process. 相似文献
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