Abstract This paper aims to analyze the dynamic stability and build the robust controller for motorized spindle system under parametric variations, external disturbances and measurement noises. A nonlinear model has been established for the machine tool spindles. The phase portrait and bifurcation analyses are provided to show dynamical behaviors for spindle machining. The spindle operations can be dynamically stables or unstable under parameter variations and disturbances. By using the robust control synthesis, the system designers can shape the frequency responses of the desired model which satisfies both transient response and robustness against various uncertainties. In fact, the robust controller can effectively attenuate exogenous disturbances and sensor noises during machining process. Finally, the simulations results demonstrate that the presented controller provides robust stability for the spindle speeds, along with excellent abilities of noise as well as disturbance attenuations.

中文翻译：

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CNC机床主轴的鲁棒控制综合

摘要 本文旨在分析电主轴系统在参数变化、外部干扰和测量噪声下的动态稳定性并构建鲁棒控制器。建立了机床主轴的非线性模型。提供相图和分岔分析以显示主轴加工的动力学行为。在参数变化和干扰下，主轴运行可以是动态稳定的或不稳定的。通过使用鲁棒控制综合，系统设计人员可以塑造所需模型的频率响应，满足瞬态响应和针对各种不确定性的鲁棒性。事实上，鲁棒控制器可以有效地衰减加工过程中的外源干扰和传感器噪声。最后，