Beacuse the practical mathematic model of rolling process can't be built accurately,this paper established an expert system to control the rolling steels' gauge by adjusting the setup roll open, which combined...Beacuse the practical mathematic model of rolling process can't be built accurately,this paper established an expert system to control the rolling steels' gauge by adjusting the setup roll open, which combined the experience of theoreticians and operators. The system applied the expression method of rule-skeleton+rule-body', and selected an appropriate non-exact reference model and self-study algorithm. The whole system, including auxiliary routes, is designed in Borland C++. Some experiments on this system have been done, and a good result has been achieved.展开更多
针对矿渣立磨生产过程中热风炉煤气流量调节的人工依赖性强、磨机出口温度控制精度低以及生产效率低下等问题,该文建立了一个串级控制系统。该控制系统中有两个控制器温度控制器和流量控制器,其中温度控制器的输出值被设定为流量控制器...针对矿渣立磨生产过程中热风炉煤气流量调节的人工依赖性强、磨机出口温度控制精度低以及生产效率低下等问题,该文建立了一个串级控制系统。该控制系统中有两个控制器温度控制器和流量控制器,其中温度控制器的输出值被设定为流量控制器的目标设定值,而流量控制器根据设定值调整煤气流量,从而实现对煤气流量的精确控制。通过该控制系统的建立,出口温度的波动被有效控制在±1℃的范围内,高炉煤气的消耗减少了3 m 3/t,显著提升了矿渣立磨生产的效率和稳定性,有效取代了传统的人工操作方式,对于推动矿渣立磨生产的技术进步和效率提升具有重要意义。展开更多
Conventional techniques to control variations within one plate have been based on preset models and constant automatic position control (APC or pressure feedback automatic gauge control(PAGC).However.because of the r...Conventional techniques to control variations within one plate have been based on preset models and constant automatic position control (APC or pressure feedback automatic gauge control(PAGC).However.because of the rolling force prediction error in the preset models and of the inadequate response speed of dynamic system and of the eccentricity, etc.,the conventional method has not given satisfactory results, the statistics'variations within one plate are in range of 0.25-0.60 mm The authors have developed the techniques to control the variations, which are dynamic intelligent control of hydraulic screwdown system. synchronism control of hydraulic screwdown, eccentricity control method by rotary encoder and the curve of modulus of mill measured automatically, etc., The techniques were fully and successfully industrialized in The Plate Mill of Maanshan Iron and Steel Company and good results that variations are in range of 0.08-0.15min hare been obtained in that mill.展开更多
文摘Beacuse the practical mathematic model of rolling process can't be built accurately,this paper established an expert system to control the rolling steels' gauge by adjusting the setup roll open, which combined the experience of theoreticians and operators. The system applied the expression method of rule-skeleton+rule-body', and selected an appropriate non-exact reference model and self-study algorithm. The whole system, including auxiliary routes, is designed in Borland C++. Some experiments on this system have been done, and a good result has been achieved.
文摘针对矿渣立磨生产过程中热风炉煤气流量调节的人工依赖性强、磨机出口温度控制精度低以及生产效率低下等问题,该文建立了一个串级控制系统。该控制系统中有两个控制器温度控制器和流量控制器,其中温度控制器的输出值被设定为流量控制器的目标设定值,而流量控制器根据设定值调整煤气流量,从而实现对煤气流量的精确控制。通过该控制系统的建立,出口温度的波动被有效控制在±1℃的范围内,高炉煤气的消耗减少了3 m 3/t,显著提升了矿渣立磨生产的效率和稳定性,有效取代了传统的人工操作方式,对于推动矿渣立磨生产的技术进步和效率提升具有重要意义。
文摘Conventional techniques to control variations within one plate have been based on preset models and constant automatic position control (APC or pressure feedback automatic gauge control(PAGC).However.because of the rolling force prediction error in the preset models and of the inadequate response speed of dynamic system and of the eccentricity, etc.,the conventional method has not given satisfactory results, the statistics'variations within one plate are in range of 0.25-0.60 mm The authors have developed the techniques to control the variations, which are dynamic intelligent control of hydraulic screwdown system. synchronism control of hydraulic screwdown, eccentricity control method by rotary encoder and the curve of modulus of mill measured automatically, etc., The techniques were fully and successfully industrialized in The Plate Mill of Maanshan Iron and Steel Company and good results that variations are in range of 0.08-0.15min hare been obtained in that mill.
