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Adaptive Estimation and Control of Magneto-Rheological Damper for Semi-Active Suspensions 309
Figure 19.6 Parameter estimation of
.
Figure 19.7 Dynamic tire load of semi-active suspension systems.
in (19.31)), the proposed control has lower peak than others and thus
diminishes the vertical displacement effectively. The parameter estima-
ˆ
tion performance (i.e.,
)isgiven in Fig. 19.6.FromFig. 19.6,wecan
find that the proposed adaptive law can estimate the unknown param-
eters well. However, the gradient method cannot guarantee satisfactory
parameter estimation convergence although the steady-state suspension
performance can be achieved. In addition, the other two suspension per-
formances (19.20)and (19.21) can be fulfilled as shown in Fig. 19.7 and
Fig. 19.8.
