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对水轮发电机组轴系统的横向振动的自振特性进行了分析，采用考虑陀螺效应的有限元法。引入了计算模型，给出了计算公式与计算方法，据此编制了计算程序ROTOR。将ROTOR的计算结果与美国西屋公司的相应软件的计算结果进行了比较。ROTOR独有的功能是能够计算进动转速，这是目前国内工程上使用的软件所不具备的。
The natural vibration characteristics of transverse vibration of hydro-generator shaft system are analyzed, and the finite element method considering gyro effect is adopted. The calculation model is introduced, the calculation formulas and calculation methods are given, and the calculation program ROTOR is compiled accordingly. The calculation results of ROTOR are compared with those of Westinghouse corresponding software. ROTOR unique function is able to calculate the precession speed, which is currently used in domestic engineering software do not have.