基于Wiener-BP的炉膛测温仿真实验设计

Design of Furnace Temperature Measurement Simulation Experiment Based on Wiener-BP

为研究燃煤机组炉膛温度测量方法,将Wiener-BP模型用于机组炉膛温度测量。利用皮尔逊相关系数法简化模型输入规模;构建Wiener-BP模型,用自适应选择算法确定输入的延迟参数;利用该模型进行燃煤机组炉膛测温仿真,与普通BP网络测温模型仿真结果对比。结果表明,Wiener-BP模型用于燃煤机组炉膛温度测量效果良好,且模型参数初值对测量精度有较大影响。该仿真实验设计思路有助于提高能动类专业学生解决复杂工程问题的能力;实验结果的表征与分析方法锻炼了学生分析与解释数据并通过信息综合推导出结论的能力。

In order to study the measurement method of furnace temperature in coal-fired power units,the Wiener-BP model is applied to the measurement of furnace temperature in coal-fired power units.We simplify the input scale of the model by using Pearson correlation method,construct a Wiener-BP model and use a delay time adaptive selection algorithm to determine the delay parameters in the input.The simulation experiment of temperature measurement in coal-fired unit furnace is conducted by using this model,and the simulation results are compared with those of the ordinary BP network temperature measurement model.The measurement effects under different initial parameter values are also compared.The results show that the Wiener-BP model has good performance in measuring the furnace temperature of coal-fired units,and the initial values of the model parameters have a significant impact on the measurement accuracy.The design concept of this simulation experiment is helpful in improving the ability of active students to solve complex engineering problems.The characterization and analysis methods of experimental results exercise students’ability to analyze and interpret data,and obtain reasonable and effective conclusions through information synthesis.