摘要
　　本文之主旨是在探討連續模式的轉子系統，向前與向後旋動(forward and backward whirling)之特性。文中，吾人首先利用解析法求得連續軸的水平與垂向位移函數，接著，利用連續軸兩端支撐點的邊界條件，以及圓盤與連續軸之接點的相容及平衡條件，求得整個轉子系統的頻率方程式。最後，由上述頻率方程式，吾人即可求得轉子系統向前與向後旋動的臨界轉速，以及各對應的振態。圓盤在連續軸上的位置及其直徑比，對轉子系統的臨界轉速與振態之影響，係本文探討的重點。為了核對本文理論與電算程式的可靠性，吾人亦使用傳統的集結質量轉移矩陣法，來求同一轉子系統在無旋轉情況下的「自然頻率」，並將所得結果與根據連續模式轉子系統理論，所得的向前與向後旋動之「臨界轉速」相比較，以了解它們之間的差別。

Abstract
　Probing into the subsystem of rotating of the continuous way in purport of this text, with fasten the characteristic moved (forward and backward whirling ) backward forward. Wen Zhong, my utilizes the analytic method to try to get the level of the continuous axle and hang down to displacement function at first, then , utilize the border condition of the continuous axle both ends strong point , and the inclusive and balanced condition of the contacts of the disc and continuous axle, try to get the whole frequency equation preface that transfered to the subsystem. Finally, by the equation preface of above-mentioned frequency, my can try to get the subsystem of rotating with fasten the critical rotational speed moved backward forward , and the each corresponding attitude of shaking . Disc in continuous for position and his the diameter in axle than,to transfering by rotational speed not critical of subsystem to and shaking influence of attitude of, it is the focal point that this text probes into. In order to check that the theory of a unity and coherence in writing and electricity can be regarded as the dependability of the procedure , my also uses the traditional quality of concentrating to shift the matrix law, is it ask the same to transfer subsystem ' natural frequency ' in without spin cases to to come, and income with turn the theory of the subsystem result according to continuous way, the income , with fasten ' the critical rotational speed ' moved to compare backward forward, in order to understand the difference between them.

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