Estimation and Identification of Nonlinear Parameter of Motion Index Based on Least Squares Algorithm

Table 1

Estimated relative errors

Item	a1	a2	a3	b0
real	-2.1667	1.7778	0.5556	0.0055
prediction	-2.1681	1.7799	0.5553	0.0057
error	0.065	0.12	0.054	3.64