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Meng J, Li C, Tao J, Li Y, Tong Y, Wang Y, Zhang L, Dong Y, Du J. RNN-LSTM-Based Model Predictive Control for a Corn-to-Sugar Process. Processes (Basel) 2023. [DOI: 10.3390/pr11041080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
The corn-to-sugar process is difficult to control automatically because of the complex physical and chemical phenomena involved. Because the RNN-LSTN model has been shown to handle long-term time dependencies well, this article focused on the design of a model predictive control system based on this machine learning model. Based on the historical data, we first reduced the input variable dimension through data preprocessing, data dimension reduction, sensitivity analysis, etc., and then the RNN-LSTM model, with these identified key sites as inputs, and the dextrose equivalent value as the output, was constructed. Then, through model predictive control using the locally linearized RNN-LSTM as the predictive model, the objective value of the dextrose equivalent was successfully controlled at the target value by our simulation study, in different situations of setpoint changes and disturbances. This showed the potential of applying RNN-LSTM-Based model predictive control in a corn-to-sugar process.
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Affiliation(s)
- Jiaqi Meng
- Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Chengbo Li
- Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jin Tao
- COFCO Biotechnology Co., Ltd., Beijing 100005, China
| | - Yi Li
- COFCO Biotechnology Co., Ltd., Beijing 100005, China
| | - Yi Tong
- COFCO Biotechnology Co., Ltd., Beijing 100005, China
| | - Yu Wang
- COFCO Biotechnology Co., Ltd., Beijing 100005, China
| | - Lei Zhang
- Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yachao Dong
- Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jian Du
- Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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Zhao T, Zheng Y, Gong J, Wu Z. Machine Learning-Based Reduced-Order Modeling and Predictive Control of Nonlinear Processes. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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