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 centre | Passive QZS system | Semiactive 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 (%) |
| 30 | 1.16 × 10−3 | 0.322 | 2.25 × 10−4 | −80.60 | 0.066 | −79.50 | 7.68 × 10−5 | −93.38 | 0.017 | −94.72 | 40 | 1.64 × 10−3 | 0.374 | 3.42 × 10−4 | −79.15 | 0.083 | −77.81 | 8.93 × 10−5 | −94.55 | 0.022 | −94.12 | 50 | 2.17 × 10−3 | 0.396 | 4.48 × 10−4 | −79.35 | 0.093 | −76.52 | 9.79 × 10−5 | −95.49 | 0.027 | −93.18 |
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