Further, the previous analysis value of the naphtha dry point was regarded as a new indep endent variable for the soft sensor and the predicting correctness of the soft s ensor was enhanced remarkably.

• 同时提出将前一时刻初顶石脑油干点人工分析值引入作为模型的自变量；从而进一步提高了软测量模型的预测精度.