Research Article

Designing a Kalman–Bucy State Estimator for a Full Vertical Car Model

Table 5

Effect of weight matrix Qn on process noise (14 states) varies with velocity.

QnRnSpeedZsZs hatZsdZsd hatPhiPhi hatTetaTeta hat

e − 10.001500.00820.01320.04630.09850.00520.00520.0090.009
e − 20.001500.00830.01080.04530.07370.0050.0050.0090.009
e − 30.001500.00840.00860.04540.04860.00510.00510.0090.009
e − 40.001500.00840.00840.04540.04570.00510.00510.0090.009
e − 50.001500.00840.00840.04530.04540.00510.00510.00890.009

e − 10.001800.00740.01280.06110.11060.01460.01420.00610.0064
e − 20.001800.00740.01030.06150.08860.01470.01430.00610.0064
e − 30.001800.00730.00780.06150.06590.01470.01430.00610.0063
e − 40.001800.00740.00750.06110.06210.01470.01430.00610.0063
e − 50.001800.00740.00750.06170.06240.01490.01440.00620.0063

e − 10.0011000.0070.01250.06040.10810.0190.01870.00440.0045
e − 20.0011000.0070.00990.05930.0860.01880.01850.00440.0045
e − 30.0011000.0070.00750.05990.06380.01890.01860.00440.0045
e − 40.0011000.0070.00710.05950.06030.01890.01870.00440.0044
e − 50.0011000.0070.00710.05980.06040.01890.01860.00440.0044

e − 10.0011500.00360.00960.04020.08540.01070.01080.00460.0046
e − 20.0011500.00360.00660.040.06290.01030.01040.00440.0044
e − 30.0011500.00360.00380.04040.04190.01020.01040.00450.0044
e − 40.0011500.00360.00370.04040.04110.01020.01040.00450.0044
e − 50.0011500.00360.00370.04040.04120.01030.01040.00440.0044