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Abstract: Based
on the conception of instantaneous motion center, a new virtual
vibration system for dynamic balancing measurement is proposed. The
structural features and the unbalancing response characteristics of this
vibration system are analyzed in depth. The relation between the real
measuring system and the virtual one is expounded. Theoretical analysis
indicates that the flexibly hinged integrative spring sets holds the
fixed vibration center and the excellent effect of plane separate. The
sensors are mounted in the same measuring plane so as that the influence
of the phase error on the unbalance reduction ratio is eliminated.
Furthermore, the performance changes in sensors caused by environmental
factor have less influence on the accuracy of the measurement. The
result for this system is more accurate measurement with lower
requirement for a second correction run. The experiment results validate
the effectiveness of this vibratory system for high precision dynamic
balancing measurement.
Key words: Dynamic balancing Instantaneous motion center Vibration system Piezoelectric sensor
Plane separate
CLC No: TH113.25
Received 20051109, received in revised form 20060515
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