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Statistical machine-learning-based predictive control using barrier functions for process operational safety
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DOI：10.1016/j.compchemeng.2022.107860.png)
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摘要
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In this work, we present statistical model predictive control with Control Lyapunov-Barrier Functions (CLBF) built using machine learning approaches, and analyze closed-loop stability and safety properties in probability using statistical machine learning theory. A feedforward neural network (FNN) is used to construct the Control Barrier Function, and a generalization error bound can be obtained for this FNN via the Rademacher complexity method. The FNN Control Barrier Function is incorporated in a CLBFbased model predictive controller (MPC), which is used to control a nonlinear process subject to input constraints. The stability and safety properties of the closed-loop system under the sample-and-hold implementation of FNN-CLBF-MPC are evaluated in a statistical sense. We use a chemical process example to demonstrate the relation between various factors of building an FNN model and the generalization error, as well as the probabilities of closed-loop safety and stability for both bounded and unbounded unsafe sets.
Keyword:
Neural networks
Generalization error
Nonlinear model predictive control
Process operational safety
Barrier functions
Statistical machine learning
期刊
C
IF:
3.9
论文数:
8.1K
被引数:
1.7W
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