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针对超临界直流锅炉受热面存在热力性质的较大变化及很强的非线性,采用稀疏化核偏最小二乘法对直流锅炉受热面的过冷段、蒸发段和过热段内工质的热力性质进行了拟合计算.结果表明:采用该方法获得的计算结果令人满意,其相对误差可控制在0.1%左右,适用于工程计算.通过该方法计算得出的稀疏化参数矩阵和核偏最小二乘法回归系数矩阵可用于直流锅炉的机理建模及相关的智能测量仪表中,便于实现编程.
Aiming at the large change of the heating surface and the strong nonlinearity of the heated surface of the supercritical once-through boiler, the thermodynamic properties of the working fluid in the superheating section, the evaporating section and the superheating section of the heated surface of the once-through boiler The results show that the calculation result obtained by this method is satisfactory and the relative error can be controlled at about 0.1%, which is suitable for engineering calculation.The sparse parameter matrix and the minimum of the kernel deflection calculated by this method Multiplicative regression coefficient matrix can be used to model the mechanism of the DC boiler and related intelligent measuring instruments, to facilitate programming.