共查询到20条相似文献,搜索用时 78 毫秒
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凌钢中宽带热连轧机是引进德国二手设备,整个轧线除R2粗轧机装有测力压头外,其余均未安装。为了满足轧线自动化的要求,轧机经改造后全部安装了加拿大KELK公司的测力压头及ROLLMAX全数字式测量系统,使整个轧线的自动化水平有了很大的提高。1 系统构成及特点11 测力压头测力压头是采用KELK公司的应变式圆型测力压头。它是专为在轧机上安装、测量大力值所设计的受压型应变式传感器。此种压头的敏感元件是电阻应变片,应变片粘贴在一块经过锻造的圆钢上。这种几何形状的压头能显著地降低滞后,同时多组应变片均匀、… 相似文献
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用于生产热轧不锈带钢的1780mm热连轧机设备功能强,工艺技术先进。该轧机的建成投产标志中国不锈热轧带钢装备达到国际先进水平。通过热轧工艺的研究,在达到轧机设计能力的同时,使热轧不锈带钢性能不断提高。实际生产表明1780mm热连轧机在生产不锈带钢方面正在发挥越来越重要的作用。 相似文献
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The strip flatness and crown control model is the foundation of automatic strip shape control. In this paper, considering the metal transverse flows and the inter stand second deformation, the trip flatness and crown control model has been developed , which can be applied to CVC mills and PC mills as well as normal four-high mills. The strip flatness and crown control model has a high precision, and has been successfully applied to the automatic strip shape control system reconstruction of Tangshan Ganglu 1250mm hot strip plant. 相似文献
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1549 mm热连轧机板形控制系统 总被引:1,自引:0,他引:1
介绍了太钢1549mm热连轧机技改后板形控制系统的组成,重点对板形控制模型的组成和设定计算策略进行了介绍。该系统的成功投入使太钢热连轧厂的板形实物质量水平达到了国内领先水平。 相似文献
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提出界定轧机板形控制性能的辊缝调节特性空间(CQ-CH-q)及评价的主要参数:辊缝基本凸度及可调度、辊缝刚度、弯辊调控幅度、辊缝曲线四次分量可调度和辊间接触压力峰值.分析了板形控制的“柔性辊缝策略”与“刚性辊缝策略”.提出采用“交接触长度(VCL)支持辊”以改善连轧机组的板形控制性能,并在生产中应用. 相似文献
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LIU En-yang ZHANG Dian-hua SUN Jie PENG Liang-gui GAO Bai-hong SU Li-tao 《钢铁研究学报(英文版)》2012,19(4):39-42
Abstract: Feedback control is one of the most important ways to improve coiling temperature control precision during laminar cooling process. Laminar cooling equipments of a hot strip mill and structure of the control system were introduced. Feedback control algorithm based on PI controller and that based on Smith predictor were designed and tested in a hot strip mill respectively. Practical application shows that the feedback control system based on PI controller plays a limited role in improving coiling temperature control precision. The feedback control system based on Smith predictor runs stable and reliable. When the measured coiling temperature deviates from the target value, it can be adjusted to the required range quickly and steadily by Smith predictor feedback control, which improves the coiling temperature control precision greatly, and qualities of hot rolled strips are improved significantly. 相似文献
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An innovative sliding mode controller for looper and tension control in hot strip finishing mills was developed based on approximately linearized model. Firstly, a fictitious controller of the reduced order subsystem was designed according to desired dynamics, by which, the angle and tension loops were decoupled on the sliding manifold. Then, a sliding mode controller was used to validate finite time convergence of the state vector to the manifold which guaranteed the stability and performances of the overall system. This solution was considered owing to its well-known robustness and simplicity characteristics concerning disturbances and unmodelled dynamics. Simulation results showed the effectiveness of the proposed controller compared with conventional ones. 相似文献