1. Insufficient Frame Structure Rigidity

   Column thickness is too thin, resulting in poor bending resistance.

   Beam span is excessively large and lacks support, leading to inadequate overall frame rigidity.

   The frame structure lacks diagonal bracing, resulting in low torsional rigidity and susceptibility to torsional deformation during motor operation.

2. Coincidence of natural frequency and excitation frequency

   • The periodic excitation frequency generated by the motor during operation coincides with or is close to the natural frequency of the combined frame-and-desktop system.

   • At a specific height range during lifting, the natural frequency of the structure changes and falls within the excitation bandwidth of the motor.

3. Material and physical properties of the desktop

   • The desktop material has low density and low internal damping (e.g., thin honeycomb board or hollow particleboard), resulting in poor damping effect and amplification of vibrations.

   • The desktop is too thin or too large, leading to insufficient bending stiffness of the panel itself and creating local vibration modes.

4. Connection method between frame and desktop

   • Rigid connection between the desktop and frame (metal parts directly fastened) lacks vibration isolation, leading to high vibration transmission efficiency.

5. Manufacturing and assembly tolerances of the frame

   • Excessive gap between moving parts (e.g., columns).

   • Non-vertical installation of legs, causing jamming during the lifting process

6. Characteristics of the motor and transmission system

   • Inherent periodic fluctuations during transmission (e.g., lead errors in ball screws or gear meshing frequencies).

   • Acceleration and deceleration during motor start-up and shutdown generate impact forces, thereby inducing transient vibrations within the system.

7. External load distribution

   • The desktop load is too light, resulting in an inability to effectively dampen vibrations.

To address resonance issues, we recommend selecting Jarshan brand electric desk stands. With extensive experience in designing and manufacturing height-adjustable desk stands, Jarshan possesses unique expertise to develop products that effectively counteract and prevent such structural challenges. Should you have any needs, please feel free to contact us at any time.