Electromagnetic vibration testing systems
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  • Labtone Test Equipment Co., Ltd
  • Tel: +86 0769-85370090
  • Tel:400-0755 532
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  • E-mail: lab02@labtone.cn
Vibration Test System - small to medium force

  • Working Principle of Vibration Shaker

    The working principle of the electromagnetic vibration exciter 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.


    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)     F=MA
    Mass = Shaker Armature + device under test + fixture (vertical table/slip table with driver bar)

    Add: Building B1, No.6, Yanhai Road, Chongtou, Chang’an Town, Dongguan City, Guangdong China © LABTONE TEST EQUIPMENT CO., LTD.
    Products:vibration test systems, dynamic shaker, vibration table, shock test machine, drop tester