Absolute Instantaneous Optimal Control Performance Index for Active Vibration Control of Structures under Seismic Excitation

Table 3

Comparison measures for El Centro earthquake.

Story no	NC		LQR			INS-ABS
	P1	P2	P1	P2	P3 control energy	P1	P2	P3 control energy
1	1.00	1.00	0.65	0.88	1 (14994 J)	0.70	0.68	0.95 (14317 J)
2	1.95	1.55	1.26	1.01		1.29	0.82
3	2.82	1.96	1.82	1.27		1.83	0.99
4	3.57	2.26	2.33	1.43		2.29	1.20
5	4.19	2.38	2.76	1.68		2.68	1.41
6	4.66	2.48	3.11	1.85		2.97	1.59
7	4.98	2.67	3.33	1.91		3.18	1.72
8	5.14	2.80	3.45	1.92		3.28	1.78