Research on Dynamic Load Identification Based on Explicit Wilson-θ and Improved Regularization Algorithm

Table 1

Regularization parameters and relative accumulation errors of the impact load.

Sampling frequency (Hz)	Noise level (%)	Regularization parameter		Error (%)
		IRA	Tikhonov	IRA	Tikhonov
500	0	1e − 15	1e − 16	0.183671	0.230995
	10	1e − 13	1e − 15	4.144848	8.688246
	20	8e − 13	1e − 15	6.174314	12.484741
	30	1e − 12	2e − 15	8.438775	19.757432
1000	0	1e − 15	1e − 16	0.064986	0.160739
	10	1e − 12	1e − 15	2.557199	6.518704
	20	2e − 12	3e − 15	5.923524	10.009010
	30	2.7e − 12	5e − 15	9.163410	17.801819
2000	0	1e − 15	1e − 16	0.179296	2.679824
	10	8e − 13	1e − 15	2.836595	3.899927
	20	1e − 12	5e − 15	7.202332	8.112095
	30	2e − 12	7e − 15	11.814816	12.270310