Patent ID: 9377375
Filing Date: 2016-06-28
CPC Classification: G01M

Claim Text:
1. A method of operating a repetitive shock vibration testing system including a table configured to receive at least one product for testing, a plurality of vibrators coupled to the table and operable to impact the table with a range of impact strengths, and a plurality of accelerometers, the method comprising: providing the table with a plurality of distinct regions; providing each of the plurality of distinct regions with at least one vibrator of the plurality of vibrators and at least one accelerometer of the plurality of accelerometers; securing the at least one product to the table; setting a target vibration strength for each of the plurality of distinct regions; operating the plurality of vibrators to repeatedly impact the table to induce repetitive shock on the table and the at least one product received by the table; measuring local vibration strength at each of the plurality of distinct regions with the corresponding at least one accelerometer of the plurality of accelerometers; providing a signal corresponding to each of the measured local vibration strengths to a controller; calculating an individual control signal for the at least one vibrator of each distinct region based on the corresponding measured local vibration strength and the corresponding target vibration strength; and providing the individual control signals from the controller to control the at least one vibrator of each distinct region to achieve the target vibration strength at each of the plurality of distinct regions of the table.