Research Article
Neural Network-Based State Estimation for a Closed-Loop Control Strategy Applied to a Fed-Batch Bioreactor
Table 1
Performance evaluation of the RBF neural network.
| | Test | | | |
| | Normal operating conditions | 1.58 × 10−6 | 2.14 × 10−6 | 7.37 × 10−4 | | Continuous variations in the substrate concentration (15%) | 2.00 × 10−6 | 2.47 × 10−6 | 8.17 × 10−4 | | 20% of error in model parameters ( and ) | 1.98 × 10−6 | 2.70 × 10−6 | 9.51 × 10−4 | | 20% lesser in the initial nominal operating conditions in , , and | 1.83 × 10−6 | 2.25 × 10−6 | 3.80 × 10−4 | | Normally distributed noise with zero mean and variance of 0.2 in and | 1.93 × 10−6 | 2.35 × 10−6 | 7.51 × 10−4 |
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