A virtual dynamic balancing instrument based on LabVIEW

The rotor unbalance is one of the most frequent faults in rotary machine. It is very important to make dynamic balancing test and adjustment for the rotor. Using NI9233, a four-channel simultaneous data acquisition module, and LabVIEW8.2, a convenient and available virtual dynamic balancing instrument is developed. With four- channel full-period simultaneous sampling of NI9233, the signals of vibration and rotating speed can be acquired. Single-plane or two-plane dynamic balancing can be completed via the influence coefficient method. The experiment shows that the virtual dynamic balancing instrument is accurate in balancing and convenient in use.