Vertical Suspension Optimization for a High-Speed Train with PSO Intelligent Method

Figure 9

PSD of train body pitch acceleration at different speeds: (a) PSD of train body pitch acceleration at 300 km/h, (b) PSD of train body pitch acceleration at 350 km/h, and (c) PSD of train body pitch acceleration at 380 km/h.

(a)

(b)

(c)