| 摘要 |
<p>A low-speed balancing method is provided for balancing a rotor to introduce balance corrections for reducing unbalance due to operation of the rotor at or near critical speeds without actually balancing the rotor at such critical speeds. The method is applicable for balancing a rotor in three, four or more correction planes by utilizing combinations of generic unbalance distributions of the rotor and predetermined mode shapes of the rotor at critical speeds. A simple method is presented which allows an operator using a low-speed balancing machine to determine measured corrections applicable to two planes of the rotor and then the operator effects at least a third correction to the rotor which is proportional to the measured corrections and the unbalance/mode shape combination. The operator then repeats the low-speed balancing sequence to determine final corrections at the two planes, which are then made for finally balancing the rotor.</p> |
