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中大型数据容量的WinCC变量仿真研究
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作者 冯炳枢 罗飞 +1 位作者 陈治明 孙文一 《微计算机信息》 2009年第10期216-218,共3页
针对传统的WinCC(视窗控制中心)模拟仿真器只能进行少量变量的仿真;提出了适用于中大型数据容量的WinCC变量仿真。其中编写仿真器载入文件的仿真适合中型项目,编写方便,但缺乏灵活性;而编写全局动作仿真文件的仿真适用于大数据容量,仿... 针对传统的WinCC(视窗控制中心)模拟仿真器只能进行少量变量的仿真;提出了适用于中大型数据容量的WinCC变量仿真。其中编写仿真器载入文件的仿真适合中型项目,编写方便,但缺乏灵活性;而编写全局动作仿真文件的仿真适用于大数据容量,仿真变量的范围和变化曲线都可以根据需要设定,并在实际项目中实践了该仿真。在投入实际的生产之前,达到了良好的仿真效果,提高了投产效率,体现了仿真的智能化。 展开更多
关键词 WINCC 变量仿真 中大型数据容量
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啤酒发酵过程的建模仿真与控制 被引量:21
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作者 薛福珍 庞国仲 林盛荣 《中国科学技术大学学报》 CAS CSCD 北大核心 2001年第4期502-508,共7页
针对啤酒发酵过程的特点 ,建立了数学模型 ,设计了多变量温度控制系统 ,并提出一种面向工业过程的多变量时滞系统仿真方法 .该控制系统已在自行研制的AUTO 2 0 0 0集散控制系统中实现 ,并成功用于安徽圣泉啤酒厂的啤酒发酵温度控制 .现... 针对啤酒发酵过程的特点 ,建立了数学模型 ,设计了多变量温度控制系统 ,并提出一种面向工业过程的多变量时滞系统仿真方法 .该控制系统已在自行研制的AUTO 2 0 0 0集散控制系统中实现 ,并成功用于安徽圣泉啤酒厂的啤酒发酵温度控制 .现场运行情况表明 ,系统可靠性高 ,适应性强 ,有效提高了啤酒的质量和产量 ,取得了每年 展开更多
关键词 变量控制 系统辩识 变量时滞系统仿真方法 AUTO-2000 DCS 啤酒发酵
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巧妙使用Simulink绘制非线性系统的相轨迹 被引量:2
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作者 王凤如 《电气电子教学学报》 2004年第6期109-112,共4页
本文通过三个例题介绍了如何用 MATLAB中的 Sinulink绘制非线形系统的相轨迹。这种方法基本不需编程 ,只需在 Sinulink环境下正确构成仿真结构图即可 ,既方便又准确。该方法的应用无疑会促进相平面法的进一步发展。
关键词 Simulin 变量仿真 相轨迹
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Multi-variable Optimization of HVAC System Using a Genetic Algorithm 被引量:1
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作者 Rongling Li Ryozo Ooka 《Journal of Energy and Power Engineering》 2014年第2期306-312,共7页
Geothermal is a fast-growing alternative heat source for HVAC systems, however, the initial cost of using a ground source HVAC system is higher compared to an air source system. Studies about system design and operati... Geothermal is a fast-growing alternative heat source for HVAC systems, however, the initial cost of using a ground source HVAC system is higher compared to an air source system. Studies about system design and operation are necessary to reduce the initial cost and ensure that the ground source heat pump system has high efficiency, resulting in a lower total life-time cost. In this study, a multi-variable evolutionary computation algorithm is proposed for generating optimal parameters for a geothermal source HVAC system. The system was modeled and simulated using MATLAB. The design parameters were calculated by minimizing the energy consumption, Based on an experimental building, a case study was presented. Using this model, the optimal set points were calculated and used as a designed system. Energy consumption of this system was reduced by about 10% compared to the system operated with a fixed supply cold water temperature (7 ℃). 展开更多
关键词 Ground source air-conditioning system genetic algorithm OPTIMIZATION MATLAB.
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Testing the independence of sets of large-dimensional variables
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作者 JIANG DanDan BAI ZhiDong ZHENG ShuRong 《Science China Mathematics》 SCIE 2013年第1期135-147,共13页
This paper proposes the corrected likelihood ratio test (LRT) and large-dimensional trace criterion to test the independence of two large sets of multivariate variables of dimensions P1 and P2 when the dimensions P ... This paper proposes the corrected likelihood ratio test (LRT) and large-dimensional trace criterion to test the independence of two large sets of multivariate variables of dimensions P1 and P2 when the dimensions P = P1 + P2 and the sample size n tend to infinity simultaneously and proportionally. Both theoretical and simulation results demonstrate that the traditional X2 approximation of the LRT performs poorly when the dimension p is large relative to the sample size n, while the corrected LRT and large-dimensional trace criterion behave well when the dimension is either small or large relative to the sample size. Moreover, the trace criterion can be used in the case of p 〉 n, while the corrected LRT is unfeasible due to the loss of definition. 展开更多
关键词 large-dimensional data analysis independence test random F-matrices
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