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Application of dual-rate modeling to CCR octane quality inferential control

Dongguang Li, Sirish L. Shah, Tongwen Chen, Kent Z. Qi
2001 IFAC Proceedings Volumes  
The goal of this paper is to study automating the control loop by developing a dual-rate inferential control scheme.  ...  Octane quality control at Shell Canada's continuous catalytic reforming (CCR) units is typically done manually due to infrequent measurements of the research octane number (RON).  ...  Doyle, III, for their constructive comments and suggestions, which helped to improve the paper.  ... 
doi:10.1016/s1474-6670(17)33849-1 fatcat:megut7dcf5go7limz5aruiremu

Application of dual-rate modeling to CCR octane quality inferential control

Dongguang Li, S.L. Shah, Tongwen Chen, K.Z. Qi
2003 IEEE Transactions on Control Systems Technology  
The goal of this paper is to study automating the control loop by developing a dual-rate inferential control scheme.  ...  Octane quality control at Shell Canada's continuous catalytic reforming (CCR) units is typically done manually due to infrequent measurements of the research octane number (RON).  ...  Doyle, III, for their constructive comments and suggestions, which helped to improve the paper.  ... 
doi:10.1109/tcst.2002.806433 fatcat:v4a3uf7tezgfpbdyqtvinqebrm

Analysis of dual-rate inferential control systems

Dongguang Li, Sirish L. Shah, Tongwen Chen
2002 Automatica  
For a dual-rate control system where the output sampling interval is an integer multiple of the control interval, we propose a model-based inferential control scheme which uses a fast-rate model to estimate  ...  Comparing such an inferential controller with the corresponding fast single-rate controller, we conclude that the former is no better in disturbance rejection capability; however, in the presence of model-plant  ...  We comment that such a dual-rate inferential control scheme has been applied to an industrial continuous catalytic reforming (CCR) unit for octane quality control (Li, Shah, Chen, & Qi, 2001b) , resulting  ... 
doi:10.1016/s0005-1098(01)00295-3 fatcat:i5e6lk77xjcyxhhx57b4gx7ws4

Multirate sampled-data systems: computing fast-rate models

Jiandong Wang, Tongwen Chen, Biao Huang
2004 Journal of Process Control  
Uniqueness of the fast-rate system, controllability and observability of the lifted system, and other related issues are discussed.  ...  This paper studies identification of a general multirate sampled-data system.  ...  high-purity distillation column [13] , a bioreactor [8] and CCR octane quality control [15] .  ... 
doi:10.1016/s0959-1524(03)00033-7 fatcat:zotfzjdwyfchxc5urorxiqkvcu

Stochastic Grey-Box Modelling as a Tool for Improving the Quality of First Engineering Principles Models

Niels Rode Kristensen, Henrik Madsen, Sten Bay Jørgensen
2004 IFAC Proceedings Volumes  
An attractive feature of the proposed method lies in its applicability to irregularly sampled data. An application of the proposed method to an industrial data set is also included.  ...  A systematic framework for improving the quality of first engineering principles models using experimental data is presented.  ...  , 1994) , e.g., a high-purity distillation column (Lee, et al., 1992) and a bioreactor (Gudi, et al., 1995) and CCR octane quality control (Li, et al., 2003) .  ... 
doi:10.1016/s1474-6670(17)38722-0 fatcat:3n2uqgrghbd2xdp4tqoyvnvwgu