Table 2 The estimated parameters of two simulations for IUKF algorithm
From: A modified particle swarm optimization algorithm for parameter estimation of a biological system
True parameters | α i | g i1 | g i2 | g i3 | g i4 | β i | h i1 | h i2 | h i3 | h i4 | RMSE |
|---|---|---|---|---|---|---|---|---|---|---|---|
IUKF noise free measurement | 0.5698 | ||||||||||
x 1 | 20.4897 | 0 | 0 | −0.3092 | 0 | 10.488 | 0.9954 | 0 | 0 | 0 | |
x 2 | 7.5180 | 1.5027 | 0 | 0 | 0 | 3.4884 | 0 | 1.7552 | 0 | 0 | |
x 3 | 3.4989 | 0 | 1.7556 | 0 | 0 | 2.4842 | 0 | 0 | 1.5019 | 0.7053 | |
x 4 | 2.4902 | 0.9887 | 0 | 0 | 0 | 6.4926 | 0 | 0 | 0 | 1.294 | |
IUKF noisy measurement with SNR 20 | 0.6853 | ||||||||||
x 1 | 19.6459 | 0 | 0 | −0.1437 | 0 | 9.643 | 1.6490 | 0 | 0 | 0 | |
x 2 | 9.1521 | 1.1415 | 0 | 0 | 0 | 3.6681 | 0 | 1.4249 | 0 | 0 | |
x 3 | 3.6506 | 0 | 1.8956 | 0 | 0 | 3.6517 | 0 | 0 | 1.1638 | 0.8546 | |
x 4 | 2.6518 | 1.6585 | 0 | 0 | 0 | 7.6445 | 0 | 0 | 0 | 1.4447 | |