摘要： 针对一类磁悬浮轴承系统，应用陀螺力学原理建立其动力学状态方程，分析其在重力场中受扰后的运动特性。为使其受扰后自转轴保持竖直状态，采用一种基于位移交叉反馈和阻尼相结合的控制策略，对系统实施控制。仿真结果表明，该控制策略能够有效地使自转轴保持竖直状态下的稳定转动，并进一步讨论了某些参数的变化对系统响应波形的影响。

关键词：磁悬浮轴承；陀螺力学；重力场；位移交叉反馈
Abstract: This paper mainly discussed control approach of a maglev cylinder. First, the author used gyro mechanics principle to establish the dynamic formula of the system and then analyzed the kinetic characteristics of the system in the gravitational field. Then, in order to sustain the rotation axis vertically, the author proposed a control approach based on displacement cross feedback and damping method. The simulating result shows that this approach can sustain the rotation axis in the vertical direction effectively.Finally, the author further discussed the influences of system response when some of the parameters varies.

Key words: active magnetic bearing; gyro mechanics; gravitational field; displacement cross feedback