El-Kebir Hamza, Bentsman Joseph
Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801 USA.
Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801 USA.
Proc Am Control Conf. 2021 May;2021. doi: 10.23919/acc50511.2021.9483240. Epub 2021 Jul 28.
The first control-oriented model of the interaction of an electrosurgical probe with organic tissue, based on a 1-D PDE with a moving boundary, is introduced. To attain the desired electrosurgically-induced tissue changes using this model, a non-collocated output feedback moving boundary control law is proposed. The latter is realized through a novel non-collocated pointwise temperature-based state observer for the two-phase Stefan problem. Simulation demonstrates that the controller proposed meets the performance objective. The controller implementation is also discussed.
介绍了首个基于具有移动边界的一维偏微分方程的电外科探针与有机组织相互作用的面向控制的模型。为了使用该模型实现所需的电外科诱导的组织变化，提出了一种非并置输出反馈移动边界控制律。后者通过一种针对两相斯蒂芬问题的基于温度的新型非并置逐点状态观测器来实现。仿真表明所提出的控制器满足性能目标。还讨论了控制器的实现。
