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arXiv 2303.06602cs.RO
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用改进的输出反馈MPC方法开发触觉虚拟训练系统

Using an Improved Output Feedback MPC Approach for Developing a Haptic Virtual Training System

Amirkabir University of Technology (Tehran Polytechnic)(阿米尔卡比尔理工大学(德黑兰理工大学));Sharif University of Technology(谢里夫理工大学)

Soroush Sadeghnejad, Farshad Khadivar, Mojtaba Esfandiari, Golchehr Amirkhani, Hamed Moradi, Farzam Farahmand, Gholamreza Vossoughi

摘要:

触觉训练模拟器通常由三个主要部分组成,即操作员、触觉接口和虚拟环境。对这些组件中的每一个进行适当的动态建模可以对整个系统在透明度、与真实环境的类比和稳定性方面的性能改进产生深远的影响。在本文中,我们开发了一个基于虚拟的触觉训练模拟器内窥镜鼻窦手术(ESS)的动态特性的现象学窦组织骨折在虚拟环境中,使用输入约束的线性参数变量模型。一个并联机器人机械手配备了校准的力传感器被用作触觉接口。一个集总的五参数单自由度的质量刚度阻尼阻抗模型被分配给操作员的手臂动态。提出了一种鲁棒的在线输出反馈准最小最大模型预测控制(MPC)框架,用于在虚拟环境的分段线性动态之间切换时稳定系统。仿真和实验结果表明,所提出的控制算法的有效性,在鲁棒性和收敛到所需的阻抗量。

英文摘要:

Haptic training simulators generally consist of three major components, namely a human operator, a haptic interface, and a virtual environment. Appropriate dynamic modeling of each of these components can have far-reaching implications for the whole system's performance improvement in terms of transparency, the analogy to the real environment, and stability. In this paper, we developed a virtual-based haptic training simulator for Endoscopic Sinus Surgery (ESS) by doing a dynamic characterization of the phenomenological sinus tissue fracture in the virtual environment, using an input-constrained linear parametric variable model. A parallel robot manipulator equipped with a calibrated force sensor is employed as a haptic interface. A lumped five-parameter single-degree-of-freedom mass-stiffness-damping impedance model is assigned to the operator's arm dynamic. A robust online output feedback quasi-min-max model predictive control (MPC) framework is proposed to stabilize the system during the switching between the piecewise linear dynamics of the virtual environment. The simulations and the experimental results demonstrate the effectiveness of the proposed control algorithm in terms of robustness and convergence to the desired impedance quantities.

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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