Effect of Pantograph’s Main Structure on the Contact Quality in High-Speed Railway

Figure 17

Relative change rate e at different speeds (basically, the red lines mean decrease, the blue lines mean increase, and the black lines mean small change): (a) 200 km/h; (b) 250 km/h; (c) 300 km/h; (d) 350 km/h.

(a)

(b)

(c)

(d)