奇怪的电机振动现象
本帖最后由 wdhd 于 2016-4-21 13:16 编辑电机90kw，转速2970r/m，基础为水泥浇注，松任何地脚螺栓振动下降为2~3mm/s，把紧后，水平振动8mm/s。电机经刨平，找软脚，对中后，振动依旧。
采用高分辨率(6400线)频谱的采集和分析频谱如下：
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
水平振动频谱图振幅0.98608mm/s显示在49.5Hz上面，刚好是1倍转速频率;而振幅7.51508mm/s显示在100Hz，即2倍线路频率，比2倍转速频率(99Hz)稍高。
如何解决振动问题，请高手给个处理意见。
为什么不显示图片 电机如果有软脚至少应该有一个地脚不软吧？怎么所有的地脚松紧都会有变化呢？
另外幅值最大的频率不是转频，是二倍电源频率。建议做个停机测试，确定是机械原因还是电气原因？ 同意楼上的观点，通过分辨率判断，电气故障的原因大一些 学习了，希望有最终结果。 看下极通过频率，定子槽与转子条通过频率，如果没有这些，估计是电机内部松动处造成的！ 我处理过电机上方冷却器螺栓松动造成的类似故障好多。 处理过类似电机冷却器螺栓松动的多起类似定子松动故障，都是2FL表现出来。 学习了，很有用的讨论 估计电机本身刚度差 检查联轴器
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