Fig 1.
Schematic diagram of a gas extraction system.
Fig 2.
Schematic diagram of the gas drainage constraints and control tasks.
Fig 3.
Schematic diagram of the simpleRNN network structure.
Fig 4.
Forecast and control schematic diagram of MPC.
Table 1.
RNN and MPC controller parameters.
Fig 5.
Structural principle block diagram of the predictive controller.
Fig 6.
Comparison of Ideal Reference Curve Results for Model Hyperparameter Optimization.
(a) Comparison of fitting results of gas concentration models; (b) Comparison of fitting results of gas purity models; (c) Comparison of fitting results of negative pressure models; (d) Comparison of fitting results of pumping pump efficiency ratio model.
Fig 7.
Schematic diagram of the single-borehole negative pressure regulation test system for gas extraction from in-seam boreholes.
Fig 8.
Ideal reference curve of the controlled quantity.
Fig 9.
Dynamic control value of the control quantity.