Active Damping Device

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Current applications

• Chatter control in machine tools (i.e. grinding, milling machines)

• Vibroacoustic control of steel railways bridges,

• Vibroacoustic control of machine tools (punching machines)

Potential applications

• Industrial robots (speed and precision improvement)

• Industrial & medical vision (Image stability)

• Production machines (speed and precision improvement, noise emission attenuation)

Description

The Active Damping Device (ADD) consists of a vibration sensor, an inertial actuator and a controller. The ADD introduces structural damping into any vibration mode that can be observed by the sensor.

The ADD is not sensitive to changes in the supporting structure dynamics; frequency variation of 100% have been observed without performances degradation.

Electrical Box controlling eight AMDs in harsh environment

The fine-tuning of the device can be easily performed by in-house technicians. The device is made of a mechanical subsystem to be connected to the structure to be damped and a remote electronic box requiring only power lines; a diagnostic plug is also available.

Both devices are sealed and can be used in harsh environments. Up to 15% structural damping has been achieved on first attempt with un-characterized structures or machines.

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