Research Article
Intelligent Control Strategy of Electrohydraulic Drive System for Raising Boring Power Head
Table 2
Comparison of different combination strategies and control indicators.
| Combination | Dynamic index | Standard variance | Overshoot (%) | Stabilization time (S) |
| PSO-PID | 0.06309 | 30.1721 | 0.84 | GA-PID | 0.06309 | 30.1217 | 0.84 | WOA-PID | 0.03624 | 8.35 | 0.1 | PSO-FOPID | 0.06349 | 2.8197 | 0.51 | GA-FOPID | 0.03778 | 6.9309 | 0.16 | WOA-FOPID | 0.03535 | 0.12137 | 0.02 |
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