... second critical field 第二临界磁场 second critical speed 第二临界转速 second derivation control 按二次导数调节 ...
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本文利用振动测试记录，具体论证了汽轮机排汽端一侧轴承松动， 而导致汽轮机第二临界转速共振和强烈共振。
By analysing the amplitude of the shaft vibration, this article concludes that when the bolts get loose, it will result in resonance at the second critical speed and serious vibration.
当本体长度达到直径的6倍以上时，转子的第二临界速度将接近于电机的运转速度，运行中可能发生较大的振动。
When the body length to 6 times the diameter of the above, the rotor speed will close to the critical speed motors, operation of vibration may occur.
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