Abstract
Viscosity represents a key indicator of product quality but has traditionally been difficult to measure in-process in real-time. This is particularly true if the process involves complex mixing phenomena operated at dynamic conditions. To address this challenge, a promising solution to monitoring product viscosity is to design soft-sensors which correlate viscosity with easily measured process variables. In this study, we developed an innovative machine learning based soft-sensor construction framework by integrating different types of advanced artificial neural networks. The framework first employs a deep learning autoencoder to generate information-rich statistic latent variables by compressing high-dimensional industrial data, and then adopts a heteroscedastic noise neural network to simultaneously predict product viscosity and process variance based on the extracted latent features. To evaluate its accuracy and robustness, the data-driven soft-sensor was used to predict product viscosity for a number of industrial batches operated over different seasons. It is found that the soft-sensor has both high accuracy (prediction error < 12%) and high robustness in most of the cases, indicating its great potential for industrial batch process monitoring and quality control.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.