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High Frequency Vibration Test Stand ES-30.pdf
DO-160 Simulation Transport Vibration Laboratory Testing Equipment
Working Principle of Vibration Shaker
The working principle of vibration tester is similar to a
loudspeaker whereby electrical conductor is moved by the action of electromagnetic force in the
magnetic field. The force to accelerate the moving part is generated by the balance between driving current and
magnetic flux. Therefore, by controlling the driving current, one can control the vibration
generator.
The maximum acceleration level of the electromagnetic vibration
exciter is determined by the maximum current and the loading. At low frequency, displacement of moving
part is restricted such that the acceleration will not reach high level. The resonance frequency of
the moving element is set higher than the upper limit of the frequency range.
The performance of vibration generator can be reflected by the
chart that displays the maximum acceleration under different frequencies. By using a log-log plot,
the restriction of displacement can be expressed by a straight line with slope of 6 dB/octave.
| Shaker | |
| Sine force (peak) | 30kN |
| Shock force (peak) | 60 kN |
| Frequency range | 5~2800 Hz |
| Displacement (continuous) | 100 mm |
| Max. Velocity | 1.8 m/s |
| Max. Acceleration | 100 G |
| Armature Diameter | 445 mm |
| 1st order resonant frequency | 2,400 Hz |
| Allowable eccentric moment | >500 Nxm |
| Armature weight | 40 kg |
| HE/ST screw dimension | M10 (metric) |
| Axial vibration isolation frequency | <3 Hz |
| Max. Payload | 500 kg |
| Magnetic flux leakage | ≤1 mT |
| Dimensions (L×W×H, unpacked) | 1,330x860x1,250 mm |
| Weight (unpacked) | 2,500 kg |
| Installation | Rubber mat (anchor bolts required) |
high frequency vibration shaker Features:
1. Rugged suspension system and linear motion guiding, strong
carrying capacity, good guiding functions, high stability.
2. Load center airbag with high static stiffness and low dynamic
stiffness, strong carrying capacity, perfect performance on
amplitude variation.
3. High efficiency D class power switching, 3-sigma peak current,
low power consumption and minimum harmonic distortion.
4. Quick self-diagnosis with safety interlock, high safety
reliability.
5. Airbag shock isolation device for vibration platform without the
need of additional. foundation, perfect reproduction of vibrational
wave and reduction in vibration transmittance.
6. Horizontal and vertical expansion platforms for different
applications.
7. Simple controller operation.
The general formula for calculating force vector of vibration
systems:
Force(N) = Mass(kg) x Accelration( m/s² or g) x1.3 safety facotry F=MA*1.3
Mass = Shaker Armature + device under test + fixture (vertical
table/slip table with driver bar)
if you need more details about DO-160 Simulation Transport Vibration Laboratory Testing Equipment, don't hesitate to send your inquiry.
