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Online soft sensor method based on GPR with test andcompensation for singular point(PDF)


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Online soft sensor method based on GPR with test andcompensation for singular point
Zhong Huaibing1Xiong Weili12
1.Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education; 2.School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China
Gaussian process regression auxiliary model singular point pauta criterion soft sensor
To handle the problem of the singular query sample which is encountered in the application of soft sensor for the practical industrial processes,an online soft sensor method considering the test and compensation for the singular point is proposed in this paper.A soft sensor model can be built based on the Gaussian process regression(GPR)approach using the training dataset.The pauta criterion is improved to test the new query samples with higher degree of accuracy.If the new query sample is determined as a singular point,an auxiliary model based method is provided to repair the singular point.The renewed query sample is predicted.Otherwise,the GPR soft sensor model can be used to estimate the new query sample directly.It can ensure the validity of the new query sample point.The effectiveness of the proposed method is verified through the simulation experiment on a real sulfur recovery unit treatment process.


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Last Update: 2017-08-31