在混合外部几何约束下对连续机器人的形状和身体接触力的同时估计
Jibiao Chen1, Yiang Lu1, Junyan Yan1
1Department of Mechanical and Automation Engineering and T Stone Robotics Institute, The Chinese University of Hong Kong, Hong Kong.
Soft robotics
|November 19, 2025
概括
估计连续性手术机器人的形状和接触力是很困难的. 这项研究提出了一种使用Cosserat模型进行准确的同时估计的新方法,改善了手术机器人控制.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 医疗机器人 医疗机器人
- 控制系统 控制系统
背景情况:
- 连续性手术机器人由于有限的传感和复杂的环境而面临着同时形状和接触力估计的挑战.
- 准确的状态估计对于这些可变形机器人的精确控制和安全操作至关重要.
研究的目的:
- 开发和验证一种新的状态估计方法,用于微型连续性手术机器人的同时形状和接触力估计.
- 解决内部动态和外部环境相互作用的复杂性,包括多个联系.
主要方法:
- 基于四子的多接触Cosserat模型与接触力规范化的集成.
- 重构状态估计作为一个非线性大规模优化问题.
- 使用最小形状测量输入 (尖端位置) 进行估计.
主要成果:
- 拟议的方法可以同时准确地估计形状和接触力.
- 该方法考虑了机器人的内部动态 (执行,摩擦,非线性) 和复杂的环境接触 (点,平面,曲面).
- 通过对有线驱动连续机器人的模拟和实验进行验证,达到与最先进方法相美的准确性.
结论:
- 开发的状态估计方法提高了连续性手术机器人的能力.
- 这种方法提高了复杂的外科手术场景的稳定性和准确性.
- 它为手术机器人提供了更复杂的控制和交互的基础.
相关概念视频
Three-Dimensional Force System:Problem Solving
1.3K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.3K
Simplification of a Force and Couple System: II
563
In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...
563
Three-Dimensional Force System
2.8K
In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
2.8K
Machines: Problem Solving II
617
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
617
Coplanar Forces
5.4K
Consider an object upon which multiple forces are acting. If the lines of action of each force lie within the same plane, the system can be considered coplanar. The Cartesian vector form can be used to resolve each force into its respective components. For a coplanar system, the system will be in equilibrium if each component of the resultant force equals zero and the resultant force on the system is zero. If the sum of the forces is not equal to zero, then the object will not be in equilibrium...
5.4K
Centroid of a Body: Problem Solving
1.8K
The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
The x-coordinates and y-coordinates of each element's...
1.8K


