VIBRATION TESTING SYSTEM AND METHODOLOGY

摘要

A vibration testing system (VTS) including a vibration testing apparatus, which includes a power amplifier operatively coupled to an electrodynamic shaker. The shaker includes a vibrateable armature mechanically coupled to a payload support structure. A data logger measures and records respective values of operational parameters of the shaker over time during mechanical excitation of the payload. A controller of the VTS reads and processes logged values of the operational parameters and determines an accumulated number of armature force cycles based on the recorded values of the operational parameters. The controller computes a remaining service-life or a consumed service life of the electrodynamic shaker based on the accumulated number of armature force cycles and a predetermined service-life of the vibration testing apparatus. The controller indicates on a display of the VTS the remaining service-life or the consumed service life of the vibration testing apparatus.

主权项

1. A vibration testing system comprising:
a vibration testing apparatus comprising a power amplifier operatively coupled to an electrodynamic shaker wherein the shaker comprises a vibrateable armature mechanically coupled to a payload support structure, a data logger configured to measure and record respective values of one or more operational parameters of the electrodynamic shaker over time during mechanical excitation of the payload, a processor or controller configured to read and process logged values of the one or more operational parameters; the processor being configured to: determining an accumulated number of armature force cycles based on the recorded values of the one or more operational parameters, computing a remaining service-life or a consumed service-life of the electrodynamic shaker based on the accumulated number of armature force cycles and a predetermined service-life of the vibration testing apparatus, indicating on a display of the vibration testing system the remaining service-life or the consumed service life of the vibration testing apparatus.