Applications of the Automated SMAC Modal Parameter Extraction Package

摘要

An algorithm known as SMAC (Synthesize Modes And Correlate), based on principles211u001eof modal filtering has been in development for a few years. The new capabilities 211u001eof the automated version are demonstrated on test data from a complex 211u001eshell/payload system. Examples of extractions from impact and shaker data are 211u001eshown. The automated algorithm extracts 30 to 50 modes in the bandwidth from each 211u001ecolumn of the frequency response function matrix. Examples of the synthesized 211u001eMode Indicator Functions (MIFs) compared with the actual MIFs show the accuracy 211u001eof the technique. A data set for one input and 170 accelerometer outputs can 211u001etypically be reduced in an hour. Application to a test with some complex modes is 211u001ealso demonstrated.