As a result, an input-output PLSR model was established.Secondly, generalized likelihood ratio (GLR) test performed a hypothesis test for model residual so as to identify the system faults.

• 然后，将系统故障状态下的样本代入PLSR辨识模型，运用广义似然比(GLR)检验对模型残差进行假设检验，判断系统的故障状态。