Monte Carlo Optimization of a Hybrid Spectral / Temporal Single Input Multiple Output (SIMO) Input Derivation for an Oscillatory Decaying Shock

摘要

The ability to achieve a given acceleration level associated with a transient shaker test (i.e., a shaker shock) is largelya function of the peak available amplifier voltage and current. For tests having spectral content within the frequencyrange for which the shaker behaves like a rigid body, minimizing the table acceleration should also minimize the loadon the amplifier. However, for tests having spectral content in the frequency range where shaker dynamics come intoplay, there is no longer a direct linear relationship between the table acceleration and the amplifier performance. Atest specification with frequency content out to 5 kHz, for which the required amplifier voltage was near the limit ofthe amplifier, provided the motivation for developing a methodology which used Monte Carlo techniques to generatean input acceleration signal that optimizes multiple user defined constraints.