Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Industrial Process Fault Detection Based on Incremental Isometric Mapping and Double Local Density Method
oleh: FENG Liwei, SUN Liwen, GU Huan, LI Yuan
Format: | Article |
---|---|
Diterbitkan: | Editorial Office of Journal of Shanghai Jiao Tong University 2024-04-01 |
Deskripsi
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.