arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.15416eess.SYcs.SY
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基于贝叶斯优化的路径跟随控制性能轨迹优化

Performance-based Trajectory Optimization for Path Following Control Using Bayesian Optimization

Alisa Rupenyan, Mohammad Khosravi, John Lygeros

AI总结:

本文提出一种基于贝叶斯优化的样本高效调参算法,通过高斯过程建模性能指标,在分层轮廓控制中平衡快速遍历、跟踪精度与振动抑制,实现最佳加工性能。

摘要:

精确定位和快速遍历时间决定了加工应用中的生产率。本文展示了一种分层轮廓控制实现,以提高定位系统的生产率。高层控制器使用轮廓预测控制方法,对低层级联控制器的输入进行预优化。这种控制结构需要调整多个参数。我们提出了一种样本高效的调参算法,其中与完整几何遍历相关的性能指标被建模为高斯过程,并用于在受约束的贝叶斯优化算法中形成全局成本和约束。该方法能够在快速遍历、高跟踪精度和抑制系统振动之间进行权衡。在调整不同参数组合时,对性能提升进行了数值评估。我们证明,调整 MPC 轮廓控制器的参数在时间、跟踪精度和最小化系统振动方面实现了最佳性能。

英文摘要:

Accurate positioning and fast traversal times determine the productivity in machining applications. This paper demonstrates a hierarchical contour control implementation for the increase of productivity in positioning systems. The high-level controller pre-optimizes the input to a low-level cascade controller, using a contouring predictive control approach. This control structure requires tuning of multiple parameters. We propose a sample-efficient tuning algorithm, where the performance metrics associated with the full geometry traversal are modelled as Gaussian processes and used to form the global cost and the constraints in a constrained Bayesian optimization algorithm. This approach enables the trade-off between fast traversal, high tracking accuracy, and suppression of vibrations in the system. The performance improvement is evaluated numerically when tuning different combinations of parameters. We demonstrate that tuning the parameters of the MPC contour-controller achieves the best performance in terms of time, tracking accuracy, and minimization of the vibrations in the system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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