Long-Stroke vibration exciter Spektra APS 400
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Description and characteristics 400
The APS 400 ELECTRO-SEIS® shaker has been optimized for driving structures at their natural resonance frequencies. It is an electrodynamic force generator, the output of which is directly
proportional to the instantaneous value of the current applied to it, independent of frequency and load response. It can deliver random or transient as well as sinusoidal waveforms of force to the load.
The armature has been designed for minimum mass loading of the drive point. The ample armature stroke allows driving antinodes of large structures at low frequencies and permits rated force at low frequencies when operating in a free body mode.
The unit employs permanent magnets and is configured such that the armature coil remains in a uniform magnetic field over the entire stroke range, thereby ensuring force linearity. The enclosed, selfcooled construction provides safety and minimum maintenance. Attachment of the armature to the drive point is accomplished by a simple thrust rod like the APS 8610 modal stinger.
An amplifier, such as the PA 800 DM power amplifier, is required to provide armature drive power.
Specifications APS 420
- Force, max.: 445 N (100 lbf)
- Displacement, max.: 158 mm (peak-peak)
- Frequency range: DC...200 Hz
- Overhung load at armature attachment point, max. 9.0 kg (20 lbs)
- Direction of excitation: vertical or horizontal
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