A nonlinear approach to the control of magnetic bearings
A nonlinear approach to the control of magnetic bearings
复制标题
磁力轴承控制的非线性方法
DOI：
10.1109/87.531919
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
J. Ponsart
中科院分区：
文献类型：
--
作者：
J. Lévine;J. Lottin;J. Ponsart
在本文中，非线性方面的磁轴承的控制进行了研究。作者设计了一个非线性反馈法定位的轴，并研究避免预磁化电流的可能性，通常需要时，应用切线线性化技术。利用平坦性，他们根据当前互补条件或当前几乎互补条件提出了运动规划和稳定问题的简单解决方案，确保每个致动器中只有一个电磁体一次工作，或者任意接近这种情况。在电流和电压控制的情况下，反馈合成。在后一种情况下，一个分层的控制方案，基于时间尺度分离，提出了，以避免在开关，可能会导致从电压线性化反馈的无界电压。一些实施方面的描述和一些实验。
In this paper, nonlinear aspects of the control of magnetic bearings are studied. The authors design a nonlinear feedback law for the positioning of a shaft, and study the possibility of avoiding premagnetization currents, usually required when applying tangent linearization techniques. Using the flatness property, they propose simple solutions to the motion planning and stabilization problems according to the current complementarity condition or the current almost complementarity condition, that ensures that only one electromagnet in each actuator works at a time, or that one approaches arbitrarily close to this situation. The feedback synthesis is presented in both current and voltage control cases. In the latter case, a hierarchical control scheme, based on time-scale separation, is proposed, to avoid unbounded voltages at switchings that might result from the voltage linearizing feedback. Some implementation aspects are described and some experiments presented.