A Dual-Observer Design for Nonlinear Suspension System Based on Feedback Linearization

Table 5

Accuracy index of EKF and FL-KF observer under different road level excitation.

	ISO grade-A road		ISO grade-B road		ISO grade-C road
	Accuracy index of state estimation /%
symbols	EKF	FL-KF	EKF	FL-KF	EKF	FL-KF
V_ms	77.5	94.3	70.8	92.0	62.5	90.1
V_mu	84.2	92.4	79.8	90.0	73.1	88.6
V_sus	91.3	93.0	85.9	90.0	84.7	88.3
A_ms	88.7	91.6	85.2	89.4	83.2	88.9
D_sus	96.9	97.2	96.6	96.9	92.7	93.1