| 基于Ovation DCS的基本算法组态解决二维拟合插值问题 |
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| 引用本文： | 张雄,易凡,张晓东,陈又申,谢同琪. 基于Ovation DCS的基本算法组态解决二维拟合插值问题[J]. 热力发电, 2011, 40(9). DOI: 10.3969/j.issn.1002-3364.2011.09.026 |
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| 作者姓名： | 张雄 易凡 张晓东 陈又申 谢同琪 |
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| 作者单位： | 1. 艾默生控制系统(上海)有限公司,上海,201206
2. 宝山钢铁股份有限公司电厂,上海,200941 |
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| 摘 要： | 在对宝山钢铁股份有限公司电厂(宝钢电厂)4号机组辅机故障减负荷(RB)试验前的控制逻辑优化过程中,发现送风机出口风压计算逻辑存在设计缺陷。该风压计算是一个典型的二维曲面拟合问题,由于美国艾默生过程控制有限公司的Ovation DCS中无二维曲面拟合函数可用于送风风压计算,因此采用一维插值函数乘以修正系数的方法,其计算结果与设计值偏差较大。为此,提出了对送风机风压设计曲线的上限曲线和下限曲线分别进行分段拟合后,再在另一维度上对2条拟合曲线进行线性插值计算,以及对送风机风压设计曲线的上限曲线和下限曲线在2个维度上进行双线性插值计算2种改进逻辑组态方法。采用Ovation DCS虚拟控制器对原有算法和2种改进算法进行仿真结果表明,2种改进算法均显著提高了计算的准确性。
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| 关 键 词： | Ovation DCS 虚拟控制器 一维 二维 曲线拟合 线性插值 |
RESOLVATION OF INTERPOLATION PROBLEM IN TWO-DIMENSIONAL FITTING BASED ON DCS BASIC ALGORITHM CONFIGURATION MADE FROM EMERSON COTROL SYSTEM CORP IN USA |
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| ZHANG Xiong,YI Fan,ZHANG Xiaodong,CHEN Youshen,XIE Tongqi. RESOLVATION OF INTERPOLATION PROBLEM IN TWO-DIMENSIONAL FITTING BASED ON DCS BASIC ALGORITHM CONFIGURATION MADE FROM EMERSON COTROL SYSTEM CORP IN USA[J]. Thermal Power Generation, 2011, 40(9). DOI: 10.3969/j.issn.1002-3364.2011.09.026 |
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| Authors: | ZHANG Xiong YI Fan ZHANG Xiaodong CHEN Youshen XIE Tongqi |
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| Affiliation: | ZHANG Xiong1,YI Fan1,ZHANG Xiaodong1,CHEN Youshen2,XIE Tongqi2 1.Emerson Control System Corp,Shanghai 201206,PRC 2.Power Plant under Baoshan Iron & steel Corp,Shanghai 200941,PRC |
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| Abstract: | In the optimization process of control logic before run back test of unit no.4 in Shanghai Baogang Power Plant,it is discovered that the design defects existing in calculating logic for outlet air pressure of the forced draft fan.The calculation of air pressure is a typical problem in two-dimensional curved surface fitting,owing to there isn't two-dimensional curved surface fitting functions in Ovation DCS made from Emerson Control System Corp in USA can be used to calculate the air pressure of forced draft... |
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| Keywords: | Ovation DCS virtual controller one-dimension two-dimension curve fitting linear interpolation |
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