Research Article

Design and Research of Semiactive Quasi-Zero Stiffness Vibration Isolation System for Vehicles

Table 2

RMS and relative differences of displacement and acceleration under harmonic excitation.

Vehicle speed (km·h−1)Body centrePassive QZS systemSemiactive QZS system
Displacement (m)Acceleration (m·s−2)Displacement (m)Displacement difference (%)Acceleration (m·s−2)Acceleration difference (%)Displacement (m)Displacement difference (%)Acceleration (m·s−2)Acceleration difference (%)

301.16 × 10−30.3222.25 × 10−4−80.600.066−79.507.68 × 10−5−93.380.017−94.72
401.64 × 10−30.3743.42 × 10−4−79.150.083−77.818.93 × 10−5−94.550.022−94.12
502.17 × 10−30.3964.48 × 10−4−79.350.093−76.529.79 × 10−5−95.490.027−93.18