基于阻抗控制的医疗连续机器人的操作刚度控制器
Jinyu Duan1, Kai Zhang1, Kun Qian2
1Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.
Cyborg and bionic systems (Washington, D.C.)
|May 9, 2024
概括
这项研究引入了连续操纵器的操作硬度控制器 (OSC),使得可调整的硬度更安全,更精确的微创手术 (MIS). 控制器在实验中表现出高精度和稳定性.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 手术技术 手术技术
- 控制系统 控制系统
背景情况:
- 连续操纵器在微创手术 (MIS) 中具有优势,因为它们能够导航复杂的解剖结构.
- 可控制的操作度对于连续操纵器在不同手术阶段至关重要,平衡安全访问与精确操纵.
研究的目的:
- 为肌驱动连续操纵器提出和验证一个操作刚度控制器 (OSC).
- 为了使操纵器硬度的动态调整,而不改变其物理结构或材料.
主要方法:
- 基于可变阻抗控制和拉格朗日动态建模的OSC的开发.
- 修改沿操纵者的肌驱动力的变化,以改变刚性.
- 使用利亚普诺夫函数进行稳定性分析.
主要成果:
- 通过修改肌驱动力的作用,OSC成功调整了运行度.
- 实验验证显示,恒定度的平均误差为7.82%,变化时间度的平均误差为3.09%.
- 控制器表现出高精度,稳定性和强度.
结论:
- 拟议的OSC有效控制连续操纵器的操作刚度.
- 这项技术提高了连续操纵器在微创手术中的安全性和精度.
- 控制器适应动态刚度要求的适应性是一个关键的进步.
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