Nonlinear PLS is used to build soft sensor of fluidized catalytic cracking unit(FCCU) host fractionator light diesel pour point,and quality controller is designed to directly control pour point.

• 用非线性PLS建立了FCCU主分馏塔轻柴油凝固点的软测量模型,设计了直接控制轻柴油凝点的质量控制方案。