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

Table 2

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	0.86	0.92	1 (1018 J)	0.90	0.61	0.88 (906 J)
2	1.99	1.44	1.13	0.93		1.21	0.73
3	2.93	1.58	1.64	1.05		1.76	0.81
4	3.80	1.66	2.09	1.11		2.20	0.88
5	4.55	1.80	2.46	1.12		2.55	0.95
6	5.16	2.10	2.74	1.14		2.82	1.04
7	5.58	2.44	2.94	1.26		3.00	1.12
8	5.81	2.66	3.04	1.36		3.10	1.17