Table 1 System parameters

Mass of the vehicle body m _s (kg)

11560

Roll moment of inertia I _θ (kg·m²)

16750

Pitch moment of inertia I _φ (kg·m²)

85036

Unsprung mass of front wheel m _fr , m _fl (kg)

435

Unsprung mass of rear wheel m _rl , m _rr (kg)

845

Distance from the centre of gravity to front axis l _f (m)

3.32

Distance from the centre of gravity to front axis l _r (m)

2.38

Half of the wheel-track l _a (m)

1.21

Front wheel damping coefficients c_d1, c_d2 (N·s·m⁻¹)

11085

Rear wheel damping coefficients c_d3, c_d4 (N·s·m⁻¹)

13900

Tyre stiffness k _tf , k _tr (kN/m)

650

Cross-sectional area of the air spring A _asi (m²)

0.042

Cross-sectional area of the solenoid valve s (m²)

7 × 10^‒6

Volume of the pipeline V _pi (m³)

1.7 × 10^‒4

Air pressure of the air reservoir P _h (MPa)

1.8

Air pressure of the environment P _e (Pa)

1.01 × 10⁵

Air temperature T (K)

293.15

Universal gas constant R (J·kg^‒1·K^‒1)

287.1

Polytropic index k

1.4

Critical pressure ratio b

0.528