Minimum drive power of multiple-point random excitation test

A technique for control of random vibration test where excitation is applied at two or more points is required for large size and complex structure test item. Multiple-point random excitation test requires the specification of the auto-spectral density and the cross-spectral density. However, the cross-spectral density of motion between each pairs of controls is not offered in some tests, in the case of knowing the frequency-respond character, and hence the maximum and minimum drive power formula with using the generalized matrix inverse are deduced. A simulation is also made in this paper.