Types of Vibration Isolation: Comprehensive Analysis of Vibration Isolation Technology Classification and Application

Introduction

In the fields of modern precision manufacturing and scientific research, the selection of vibration isolation types is directly related to experimental accuracy and equipment stability. Whether it’s semiconductor manufacturing, optical inspection, or biomedical research, understanding the types of vibration isolation can help us choose the most suitable isolation solution. This article will systematically introduce the types of vibration isolation and their application scenarios, providing readers with a professional and practical reference guide.

Active isolation technology

Active vibration isolation is the most technically advanced type of vibration isolation. It monitors vibration signals in real time through sensors and uses the control system to drive actuators to generate reverse force to counteract external vibration interference.

Technical Features

Active isolation systems have the advantages of fast response speed and isolation frequency bandwidth. Taking LeadTop’s TA400 desktop active isolation platform as an example, this product adopts a composite technology of active damping matrix and passive isolation layer to achieve six degrees of freedom vibration suppression in the 1-200Hz wide frequency band, with a response speed of only 10-20ms.

Applicable scenarios

Optical testing: wavefront analyzer/laser interferometer (wavefront aberration detection repeatability up to λ/100)

Quantum Technology: Atomic Interferometer/Superconducting Quantum Chip Interference Pattern Stability Increased by 60%

Biomedical: Cryo electron microscopy/two-photon microscopy (image resolution increased to 0.5nm level)

Precision manufacturing: White light interferometer/nanoimprint machine (surface roughness measurement error<0.1nm)

Passive isolation technology

Passive isolation is the most classic and widely used type of vibration isolation. It relies on the elastic damping properties of the material itself to absorb and attenuate vibration energy, without the need for external energy supply.

Rubber damping vibration isolation

Composite rubber damping technology is a representative type of passive vibration isolation. By using specially formulated rubber materials, effective vibration isolation can be achieved in the mid to low frequency range (6-12Hz). This type of system has a simple structure, low maintenance costs, and is suitable for general precision experimental environments.

Steel cable and spring vibration isolation

Another common type of vibration isolation is the steel cable spring system. It utilizes the elastic deformation of metal springs to isolate vibrations, with strong load-bearing capacity, suitable for the isolation needs of heavy equipment.

Air floating vibration isolation technology

Air floating vibration isolation is a type of vibration isolation with excellent performance, especially suitable for ultra-low frequency vibration isolation needs.

working principle

The air flotation system uses compressed air to form an air film support, completely isolating the platform from the ground. Its natural frequency can be as low as 1.0-2.0Hz, far lower than other types of vibration isolation, and can effectively isolate low-frequency vibrations transmitted from the ground.

technical advantage

LeadTop’s air floating vibration isolation optical platform ZDT-P series adopts an air spring and ultra-thin composite airbag structure, combined with multi small hole quasi laminar damping technology, to achieve a vertical/horizontal natural frequency of 1.0-2.0Hz and an isolation efficiency of 78-95% (5-10Hz). Supports pneumatic automatic leveling and ± 10mm height adjustment, equipped with a silent air compressor (<50dB), with a tabletop flatness of 0.05-0.1mm/㎡ and surface matte treatment. Suitable for scenarios with extremely high vibration requirements such as laser interference and precision detection, providing ultra stable operation support for high-precision equipment.

Hybrid vibration isolation technology

Hybrid vibration isolation represents the development trend of vibration isolation types, which combines the advantages of active and passive technologies.

Composite design concept

This type of vibration isolation adds an active control unit on the basis of passive isolation, which ensures system stability and enhances dynamic response capability. When encountering sudden vibration interference, the active unit can respond quickly, while the passive unit provides basic vibration isolation protection.

Key factors in selecting isolation schemes

How to choose a suitable solution after understanding the types of vibration isolation?

Load requirements

The bearing capacity of different types of vibration isolation varies greatly. For light loads, a table type active system is available, while for heavy loads, air flotation or customized solutions need to be considered.

frequency characteristic

Analyze the frequency characteristics of the main vibration sources and select the type of vibration isolation with the best isolation effect for the corresponding frequency band.

environmental conditions

Special environments such as clean rooms and temperature controlled laboratories have specific requirements for the type of vibration isolation, which need to be considered comprehensively.

Conclusion

There are various types of vibration isolation, ranging from active, passive to air floating, each with its unique advantages and application scenarios. Correctly understanding the types of vibration isolation and selecting appropriate solutions based on specific needs is the key to ensuring the stable operation of precision equipment.