What is the difference between active isolation and passive isolation?

 

 

 

Passive isolation is a common isolation method, which utilizes the high damping and low stiffness characteristics of isolation materials to convert vibration energy into thermal energy and absorb it, thereby achieving the purpose of shock absorption and isolation. Passive isolation systems do not require active control of vibration, only the selection of appropriate isolation materials and structural design is needed.

 

 

 

Active vibration isolation is a physically based isolation technology that utilizes sensors, controllers, and actuators to monitor and feedback control a system in real-time. By changing the damping, stiffness, or inertia characteristics of the system, vibration can be actively eliminated or controlled. Active isolation systems require energy consumption to achieve control, so their energy efficiency is relatively low, but they can achieve more efficient isolation effects than passive isolation.

 

 

 

Overall, active isolation is suitable for isolating low-frequency and small amplitude vibrations, while passive isolation is suitable for controlling and isolating high-frequency and large amplitude vibrations, but it comes with higher costs and energy consumption. The selection of vibration isolation methods requires comprehensive consideration and analysis based on specific application scenarios and requirements.