Experimental study of sliding mode control for a benchmark magnetic bearing system and artificial heart pump suspension
Experimental study of sliding mode control for a benchmark magnetic bearing system and artificial heart pump suspension
复制标题
基准磁力轴承系统和人工心脏泵悬架滑模控制实验研究
DOI：
10.1109/tcst.2002.806457
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Xuerui Zhang
中科院分区：
文献类型：
--
作者：
Jun;P. Allaire;G. Tao;J. Decker;Xuerui Zhang
本文研究了两个对称磁悬浮轴承上平衡梁的滑模控制问题。建立并实现了系统的状态空间模型。将滑模控制器分为线性部分和非线性部分。给出了使系统状态到达滑动面的到达条件，并采用连续函数边界层来避免抖振。实验结果说明了系统在小边界层和大边界层条件下的性能。分析了非线性分量增益对系统性能的影响。介绍了一种使用实时操作系统的新的实验装置，为设计者改变控制器参数提供了一种方便的方法。实验结果验证了滑模控制器的有效性。这项研究在人工心脏泵系统中具有潜在的应用价值。
This paper deals with the sliding mode control of a balance beam on two symmetric magnetic bearings. A state-space model of the system is developed and implemented. The sliding mode controller is separated into linear and nonlinear components. A reaching condition to bring the system states to a sliding surface is developed and a continuous function boundary layer is used to avoid chattering. The system performance with a small and large boundary layers is illustrated by experimental results. The effect of a nonlinear component gain to the system performance is analyzed. A new experimental setup is introduced using a real-time operating system, which gives a designer a convenient method to change the controller parameters. Experimental results verify the effectiveness of the sliding mode controller. A potential application of this study to an artificial heart pump system is demonstrated.