From: An online soft sensor method for biochemical reaction process based on JS-ISSA-XGBoost
Environmental variables | Query Domain | |||
---|---|---|---|---|
QD1 | QD2 | QD3 | QD4 | |
Dissolved oxygen concentration \(\left(DO\right)\) | 1.16 | 1.23 | 1.11 | 1.09 |
Exhaust \({CO}_{2}\) concentration \({\eta }_{{CO}_{2}}\) | 1.05 | 1.10 | 1.13 | 1.07 |
\(pH\) of fermentation broth \(\left(pH\right)\) | 0.65 | 0.62 | 0.61 | 0.59 |
Flow acceleration rate of inorganic salts \(\left({f}_{b}\right)\) | 0.73 | 0.72 | 0.69 | 0.71 |
Pressure in the fermenter \(\left(P\right)\) | 0.12 | 0.21 | 0.10 | 0.32 |
Flow of air \(\left(l\right)\) | 0.21 | 0.36 | 0.35 | 0.32 |
Fermentation time \(\left(t\right)\) | 1.39 | 1.45 | 1.30 | 1.35 |
Flow rate of condensate \({f}_{w}\) | 0.90 | 0.96 | 1.05 | 0.97 |
Flow acceleration rate of ammonia \(\left({f}_{a}\right)\) | 0.85 | 0.79 | 0.72 | 0.71 |
Flow acceleration rate of methanol \(\left({f}_{f}\right)\) | 0.83 | 1.21 | 1.04 | 0.80 |
Flow acceleration rate of glucose \({f}_{c}\) | 0.44 | 0.82 | 0.77 | 0.81 |
Fermentation temperature \(\left(T\right)\) | 0.31 | 0.35 | 0.29 | 0.32 |
Motor stirring speed \(\left(r\right)\) | 0.19 | 0.23 | 0.2 | 0.17 |
Flow acceleration rate of glycerine \(\left({f}_{e}\right)\) | 0.46 | 0.81 | 0.86 | 0.73 |
Flow acceleration rate of peptones \(\left({f}_{d}\right)\) | 0.28 | 0.35 | 0.41 | 0.39 |
Volume of fermentation broth \(\left(V\right)\) | 0.76 | 0.71 | 0.76 | 0.75 |