Optimal Sensor Placement for Latticed Shell Structure Based on an Improved Particle Swarm Optimization Algorithm

Table 4

Maximum values (ODE_max) and root-mean-square values of off-diagonal elements (ODE_rms) of MAC matrix for 20 DOFs obtained by the six different methods.

Method	EI	SPSO	LPSO	RPSO	NPSO	IPSO
ODEmax	0.1663	0.1382	0.1330	0.1281	0.1096	0.0963
ODErms	0.0377	0.0368	0.0415	0.0378	0.0328	0.0321