Table 2 Performance index comparison of three PID controllers.
From: Ultra-precision control of dual-axis scanning mechanism based on PSO-RBF neural network
Controller type | Input amplitude | Rise time (ms) | Overshoot (%) | Settling time (ms) | Steady-state error (arc-sec) |
|---|---|---|---|---|---|
Classical PID | 1.0° | 51.7 | 28.8915 | 660 | 3.6 |
1.1° | 34.3 | 53.0841 | 400 | 3.2 | |
RBF-PID | 1.0° | 42.4 | 49.0265 | 170 | 1.8 |
1.1° | 44.8 | 57.6941 | 760 | 2.1 | |
PSO-RBF-PID | 1.0° | 30.3 | 30.1752 | 390 | 0.7 |
1.1° | 19.2 | 50.4965 | 160 | 1.0 |
