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摘要: 球-杆系统真正的问题并不是大行程下的非线性现象, 而是平衡点上的自振荡问题. 分析指出自振荡是由于球在滚动时存在一种滞环特性而引起的. 提出了一种极点配置的方法来避免自振荡. 仿真和实验验证了这一判断. 所采取的稳定措施也是正确的.Abstract: The real problem of the ball-and-beam system is not the nonlinear behavior under large excursions, but the limit cycle around the equilibrium point. It is pointed out that the limit cycle is caused by the hysteresis behavior of the ball during rolling. A pole placement method is proposed to avoid the limit cycle. The analysis is verified by simulation and by experiment. The stabilization approach for the ball-and-beam system is also proved to be correct.
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Key words:
- Ball-and-beam system /
- limit cycle /
- hysteresis /
- pole placement
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