Electrodynamic modal test impactor system and method

摘要

There is provided an electrodynamic modal test impactor system (10) and method. The system (10) has a controller device (12) and an impactor assembly (20) coupled to the controller device (12). The impactor assembly (20) has a housing (22) and a permanent magnet (70) positioned within the housing (22). The impactor assembly (20) further has a voice coil (112) positioned within the housing (22) in a magnetic gap (94) of a magnetic yoke housing (50). The voice coil (112) is driven by the controller device (12). The impactor assembly (20) further has a drive shaft (130) supported by two or more support elements (174). The drive shaft (130) is attached to the voice coil (112) and is driven by the voice coil (112). The impactor assembly (20) further has a load cell (144) attached to a free end (142) of the drive shaft (130) and a biasing device (96) positioned within the magnetic yoke housing (50).