Observer Kalman Filter Identification of Suspen-Dome

Table 3

The results from identified state space model of three different states.

Model	Used	State 1			State 2			State 3
		OKID	Ref.; ANSYS	Error	OKID	Ref.; ANSYS	Error	OKID	Ref.; ANSYS	Error
Freq.; (Hz)	1	3.4101	3.4233	0.39%	3.3990	3.4120	0.38%	3.3524	3.3649	0.37%
	2	3.4101	3.4233	0.39%	3.3990	3.4120	0.38%	3.3524	3.3649	0.37%
	3	3.6911	3.7078	0.45%	3.6863	3.7030	0.45%	3.4923	3.5065	0.41%
	4	3.6911	3.7078	0.45%	3.6863	3.7030	0.45%	3.5978	3.6132	0.43%
	5	3.7729	3.7907	0.47%	3.7695	3.7873	0.47%	3.5978	3.6132	0.43%
	6	3.7729	3.7907	0.47%	3.7695	3.7873	0.47%	3.7012	3.7181	0.46%
	7	3.8306	3.8492	0.49%	3.8192	3.8377	0.48%	3.7014	3.7181	0.45%
	8	4.2268	4.2520	0.60%	4.2211	4.2462	0.59%	3.9151	3.9357	0.53%
	9	4.2268	4.2520	0.60%	4.2211	4.2462	0.59%	3.9158	3.9357	0.51%
	10	4.3132	4.3399	0.62%	4.3140	4.3408	0.62%	3.9676	3.9875	0.50%
Damp.; (%)	1	2.0380	2.0000	1.86%	2.0380	2.0000	1.86%	2.0376	2.0000	1.85%
	2	2.0381	2.0000	1.87%	2.0380	2.0000	1.86%	2.0381	2.0000	1.87%
	3	2.0398	2.0000	1.95%	2.0398	2.0000	1.95%	2.0386	2.0000	1.89%
	4	2.0398	2.0000	1.95%	2.0398	2.0000	1.95%	2.0391	2.0000	1.92%
	5	2.0403	2.0000	1.98%	2.0404	2.0000	1.98%	2.0392	2.0000	1.92%
	6	2.0403	2.0000	1.98%	2.0402	2.0000	1.97%	2.0397	2.0000	1.95%
	7	2.0406	2.0000	1.99%	2.0406	2.0000	1.99%	2.0416	2.0000	2.04%
	8	2.0425	2.0000	2.08%	2.0425	2.0000	2.08%	2.0533	2.0000	2.60%
	9	2.0426	2.0000	2.09%	2.0425	2.0000	2.08%	2.0420	2.0000	2.06%
	10	2.0429	2.0000	2.10%	2.0430	2.0000	2.10%	2.0187	2.0000	0.93%