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Updated: Dec 15, 2025

Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
A model mismatch assessment method of MPC by decussation
Lijuan Li1, Luheng Lu1, Zhen Huang1
1College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing, 211816, China.
Abstract:
For the model plant mismatch (MPM) assessment of MPC systems, a correlation analysis method between the input and the disturbance (CAID) is proposed and is combined with model quality index (MQI) for its application in multivariable system. By deducing the input-output correlation coefficient variation law of adding independent variables in a function, the paper defines the CAID index of assessing the MPM. To realize the exact location of sub-model mismatch in multivariable system, the synthetical disturbance variable is constructed through principle component analysis (PCA), then it is used to define the synthetical CAID index of multivariable MPC system, and finally the decussation method combining synthetical CAID and MQI is presented. The proposed method is validated in Wood-Berry distillation process and an industrial air separate process.
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