Table 1 Characteristic frequency of pantograph and catenary.
Vertical of collector head (Hz) | Vertical of upper frame (Hz) | Lateral of upper frame (Hz) | Vertical of catenary (Hz) |
|---|---|---|---|
21.02 | 61.52 | 57.72 | 11.16 |
42.08 | 192.46 | 75.18 | 22.58 |
53.10 | 201.21 | 143.78 | 41.38 |
56.92 | 237.24 | 193.12 | 73.38 |
117.42 | 397.36 | 281.59 | 143.13 |
192.36 | 677.37 | 366.63 | 178.20 |