If your machine is fitted with a vibration monitoring device, it can record the number of vibrations of the machine, and it can also record movements that you can't see and track it with a simple sensor. Throughout the life of the motor, it vibrates at a given frequency. As the motor approaches the end of its life, the vibration frequency and amplitude tend to change linearly until the motor fails. The delivery package will vibrate at a frequency consistent with its input frequency. Everything we touch throughout the day has a resonant or intrinsic frequency, or it's a frequency that "likes to shake." A vibration monitoring system is used to provide real-time data to track small vibrations or movements that are close but not visible.