Journal of Shanghai Jiao Tong University ›› 2024, Vol. 58 ›› Issue (4): 525-533.doi: 10.16183/j.cnki.jsjtu.2022.423

• Electronic Information and Electrical Engineering • Previous Articles     Next Articles

Industrial Process Fault Detection Based on Incremental Isometric Mapping and Double Local Density Method

FENG Liwei1,2, SUN Liwen2,3, GU Huan2,3, LI Yuan1()   

  1. 1. College of Science, Shenyang University of Chemical Technology, Shenyang 110142, China
    2. College of Computer Science and Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
    3. Key Laboratory of Intelligent Technology for Chemical Process Industry of Liaoning Province, Shenyang 110142, China
  • Received:2022-10-28 Revised:2022-12-09 Accepted:2022-12-30 Online:2024-04-28 Published:2024-04-30

Abstract:

To address the nonlinearity and dynamics of industrial processes, an incremental isometric mapping (IISOMAP) in combination with double local density (DLD) is proposed as a fault detection method (IISOMAP-DLD) based on stream shape learning. First, IISOMAP is used to map the raw data into a low-dimensional manifold feature subspace and a residual subspace. Then, the double local density method is introduced in the two subspaces respectively to construct statistics to monitor the process. Finally, the IISOMAP-DLD method is applied to the Tennessee-Eastman (TE) process, and the experimental results show that IISOMAP-DLD has a higher fault detection rate than the other methods. IISOMAP preserves the intrinsic characteristics of the data and solves the nonlinear problems of the process, while the double local density method can eliminate the dynamic of the process.

Key words: manifold learning, isometric mapping (ISOMAP), local density, fault detection, dynamic

CLC Number: