Abstract
Modelling and simulation on dynamic balancing for the vibration of rotors is a novelty. Unbalance vibration in a dual-rotor rotating machinery is studied with numerical simulations and experiments. A new method is proposed to separate vibration signals of inner and outer rotors for a system with very little difference in rotating speeds. Magnitudes and phase values of unbalance defects can be obtained directly by sampling the vibration signal synchronized with reference signal. The balancing process is completed by the reciprocity influence coefficients of inner and outer rotors method. Results show the advantage of such a method for a dual-rotor system compared with conventional balancing.
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