A Load Identification Application Technology Based on Regularization Method and Finite Element Modified Model

Table 2

Load identification results at five time points under 5% noise.

Type	Time (s)	Actual load (N)	Tikhonov regularization		TSVD regularization
			Identified load (N)	Error (%)	Identified load (N)	Error (%)
Sine	0.023	13.62	13.59	0.22	13.04	4.26
Triangle	0.0025	30	32.29	7.63	29.73	0.90
Sine	0.056	–17.63	–20.62	16.96	–17.12	2.89
Triangle	0.006	–12	–13.92	16.00	–12.51	4.25
Sine	0.0905	–29.91	–31.43	5.08	–30.28	1.24
Triangle	0.0095	–6	–6.82	13.67	–6.51	8.50
Sine	0.1375	–7.65	–10.65	39.22	–8.66	13.20
Triangle	0.013	24	10.13	7.79	23.69	1.29
Sine	0.1505	19.94	15.34	23.07	18.84	5.52
Triangle	0.0185	–18	–20.80	15.56	–16.35	9.17