Handling sensor faults in economic model predictive control of batch processes. Issue 2 (10th December 2018)

• Record Type: Journal Article
• Authors: Rashid, Mudassir M.; Patel, Nikesh; Mhaskar, Prashant; Swartz, Christopher L. E.
• Is Part Of: AIChE journal. Volume 65:Issue 2(2019)
• Page Start: 617
• Page End: 628
• Publication Date: 2018-12-10
• Subjects: fault detection and isolation -- fault‐tolerant control -- economic model predictive control -- subspace identification -- batch process control -- electric arc furnace; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.16460
• Languages: English
• ISSNs: 0001-1541

Abstract

Abstract : The problem of sensor fault detection and isolation (FDI) and fault‐tolerant economic model predictive control (FT‐EMPC) for batch processes is addressed. To this end, we first model batch processes using subspace‐based system identification techniques. The analytical redundancy within the identified model is subsequently exploited to detect, isolate, and handle the faulty measurements. The reconciled fault‐free measurements are then incorporated in an economic model predictive controller formulation. Simulation case studies involving the application of the proposed data‐driven FDI and FT‐EMPC algorithms to the energy intensive electric arc furnace process illustrate the improvement in economic performance under various fault scenarios. © 2018 American Institute of Chemical Engineers AIChE J, 65: 617–628, 2019