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首页> 外文会议>International conference on vibroengineering procedia >Experimental research on dynamic characteristics of a hybrid gas bearing-rotor system for high-speed permanent magnet machine
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Experimental research on dynamic characteristics of a hybrid gas bearing-rotor system for high-speed permanent magnet machine

机译：高速永磁机混合气体轴承转子系统动态特性的实验研究

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An experiment on the vibrational characteristics of a hybrid gas bearing-rotor system in a 45 kW high-speed permanent magnet machine test rig is conducted.Nonlinear methods of measurements and analyses, including bifurcation maps, frequency spectra, and axis orbits, are adopted to evaluate sub-synchronous vibration in rotor acceleration.The effects of bearing supply pressure and speed accelerating rates on the stability of the gas bearing-rotor system are determined.Experimental results show that half-speed whirling of the gas film is eliminated and the start of gas film whipping is delayed by using the appcopriate bearing supply pressure plan,thereby improving stability.Meanwhile power frequency vibrational amplitude is the smallest during the acceleration process, including the critical speed, when the appropriate speed accelerating rates are employed.
机译：对45 kW高速永磁机试验台中的混合气体轴承转子系统的振动特性进行了实验。采用了线性测量和分析的线性方法，包括分析，包括分叉映射，频谱和轴轨道。评估转子加速度的子同步振动。确定了轴承供应压力和速度加速速率对气体轴承转子系统稳定性的影响。实验结果表明，消除了气膜的半速旋转和启动通过使用轴承供应压力计划的应用程序延迟燃气膜鞭打，从而改善稳定性。当采用适当的速度加速速率时，增加了加速过程中最小的稳定性功率振动幅度是最小的。

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