Random Testing to New Limits
George Fox Lang, Glenn Burroughs, Graham Carmichael · Sound&Vibration · 2009
Today's random vibration controllers all facilitate applying limits to the controlled acceleration's power spectral density. Now, alarm and abort limits have been added to the g/volt H-inverse frequency response function at the heart of the control loop and to measured g/g test-object transmissibility. These new limits permit detecting fatigue onset, verifying correct conduct of long-term extreme shakes as well as far better protecting both the device under test and the shaker armature.