Electrodynamic modal test impactor system and method

摘要

There is provided an electrodynamic modal test impactor system and method. The system has a controller device and an impactor assembly coupled to the controller device. The impactor assembly has a housing and a permanent magnet positioned within the housing. The impactor assembly further has a voice coil positioned within the housing in a magnetic gap of a magnetic yoke housing. The voice coil is driven by the controller device. The impactor assembly further has a drive shaft supported by two or more support elements. The drive shaft is attached to the voice coil and is driven by the voice coil. The impactor assembly further has a load cell attached to a free end of the drive shaft and a biasing device positioned within the magnetic yoke housing.

主权项

1. An electrodynamic modal test impactor system comprising:
a controller device; an impactor assembly coupled to the controller device, the impactor assembly comprising:
a housing;a permanent magnet positioned within the housing;a voice coil positioned within the housing in a magnetic gap of a magnetic yoke housing, the voice coil being driven by the controller device;a drive shaft having a first end and a second end, the first end of the drive shaft being a free end and being attached to a load cell positioned outside the housing, and the second end of the drive shaft inserted into a central opening of an armature support attached to the voice coil, the drive shaft extending from the voice coil and the permanent magnet to the load cell, and the drive shaft being driven by the voice coil; and, a biasing device positioned within the magnetic yoke housing.