Portable USB DSA for Dynamic Rotor Balance Analysis
For rotary machines, unbalanced rotating mechanisms easily generate unacceptable vibration and noise, while reducing the lifetime of shaft bearings. The unbalance can be caused by effective displacement of the mass centre line from the actual axis of the mechanism. Especially in tooling machines, vibrations caused by the unbalance can seriously affect machining precision.
To avoid such vibration and noise, the imbalance is reduced using a procedure known as dynamic balance, in which an accelerometer and tachometer measure vibration frequency and rotary speed to enable calculation of the unbalanced mass and deviation angle. A DSA (dynamic signal acquisition) module with high resolution and wide dynamic range is implemented to receive output from the accelerometer and tachometer.