← Search

Junyan Yan

7 accepted papers

2024

Simultaneous Estimation of Shape and Force along Highly Deformable Surgical Manipulators Using Sparse FBG Measurement

ICRA 2024poster

Recently, fiber optic sensors such as fiber Bragg gratings (FBGs) have been widely investigated for shape reconstruction and force estimation of flexible surgical robots. However, most existing approaches need precise model parameters of FBGs inside the fiber and their alignments with the flexible r…

Cited by 2SourceScholar
2023

A Cross-Entropy Motion Planning Framework for Hybrid Continuum Robots

RA-L 2023

The sampling-based motion planners, including the Rapidly-exploring Random Trees (RRT) algorithms, are widely utilized in continuum robots, enabling efficient search for feasible motion plans in constrained environments. In surgical robotics, complex mapping among the high-dimensional kinematics of

Cited by 10SourceScholar
2022

Versatile Motion Generation of Magnetic Origami Spring Robots in the Uniform Magnetic Field

RA-L 2022

Magnetic soft robots have attracted widespread attention for their untethered, remotely operated, and compliant deformation characteristics. Earlier work has demonstrated magnetic origami robots' diverse locomotion capabilities. This letter will focus on the motion generation and open-loop control o

Cited by 22SourceScholar
2021

Modeling a Symmetrically-Notched Continuum Neurosurgical Robot With Non-Constant Curvature and Superelastic Property

RA-L 2021

A neurosurgical robot with 3-dimensional (3D) distal manipulation can increase instrument workspace for reaching peripheral regions of intracranial lesions to achieve complete lesion removal and minimal brain manipulation in a keyhole procedure. In this work, we designed a Nitinol-based symmetricall

Cited by 27SourceScholar
2021

Motion Coupling Analysis for the Decoupled Design of a Two-segment Notched Continuum Robot

ICRA 2021poster

Multi-segment continuum robots, that offer inherent compliance and distal dexterity, are suitable for deployment in minimally invasive surgical procedures. Cable-driven mechanism is commonly used in continuum surgical robots but could lead to inter-segment motion coupling in a multi-segment robot. I…

Cited by 13SourceScholar
2021

Towards Safe Control of Continuum Manipulator Using Shielded Multiagent Reinforcement Learning

RA-L 2021

Continuum robotic manipulators are increasingly adopted in minimal invasive surgery. However, their nonlinear behavior is challenging to model accurately, especially when subject to external interaction, potentially leading to poor control performance. In this letter, we investigate the feasibility

Cited by 42SourceScholar
2021

Towards a Wristed Percutaneous Robot With Variable Stiffness for Pericardiocentesis

RA-L 2021

Pericardiocentesis is the drainage of excessive fluid in the pericardium surrounding the heart under ultrasound guidance. The percutaneous procedure comes with the risk of cardiac perforation since the needle is inserted towards the beating heart. This letter presents a novel percutaneous robot that

Cited by 13SourceScholar