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Table 5 Optimization results—objective function and constraints

From: GA-based multi-objective optimization of active nonlinear quarter car suspension system—PID and fuzzy logic control

Parameter Fuzzy logic control-GA PID-GA PID classical Passive system
RMS control force (N) 140.9662 445.4385 346.8979
VDV (m/s1.75) 1.1782 1.4410 1.6174 2.1509
Aw (m/s2) 0.5057 0.6178 0.6890 0.9322
RMS suspension space deflection (m) 0.0085 0.01007 0.008700 0.009311
RMS tyre deflection (m) 0.0042 0.008864 0.007300 0.004473
Max control force (N) 345.6605 1423.1810 1173.24400
Max acceleration (m/s2) 2.31900 1.8615 2.1800 3.16720
Max suspension space deflection (m) 0.02520 0.03426 0.03050 0.02640
Max tyre deflection (m) 0.01350 0.02639 0.02510 0.01840