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🔍 andrew cropper 📂 Engineering
Showing 1104 results for "andrew cropper" in Engineering
Engineering Preprint PDF DOI

Stochastic Entanglement of Deterministic Origami Tentacles For Universal Robotic Gripping

Alec Boron, Bokun Zheng, Ziyang Zhou, Noel Naughton, Suyi Li · 2026

Origami-inspired robotic grippers have shown promising potential for object manipulation tasks due to their compact volume and mechanical flexibility. However, robust capture of objects with random sh…

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Engineering Preprint PDF DOI

ATLAS: An Annotation Tool for Long-horizon Robotic Action Segmentation

Sergej Stanovcic, Daniel Sliwowski, Dongheui Lee · 2026

Annotating long-horizon robotic demonstrations with precise temporal action boundaries is crucial for training and evaluating action segmentation and manipulation policy learning methods. Existing ann…

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Engineering Preprint PDF DOI

2D and 3D Grasp Planners for the GET Asymmetrical Gripper

Andrew Goldberg, Ethan Ransing, Anton Kourakin, Cael Magner, Edward H. Adelson, Ken Goldberg · 2026

In this paper, we introduce GET-2D-1.0, a fast grasp planner for the GET asymmetrical gripper that operates from a single-view RGB-D image, using the Ferrari-Canny metric and a novel sampling strategy…

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Engineering Preprint PDF DOI

An analysis of sensor selection for fruit picking with suction-based grippers

Eva Krueger, Marcus Rosette, Joseph R. Davidson · 2026

Robotic fruit harvesting often fails to reliably detect whether a fruit has been successfully picked, limiting efficiency and increasing crop damage. This problem is difficult due to compliant fruit a…

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Engineering Preprint PDF DOI

Grid-Supporting Equipment Supply Chains Constrain the Feasible Pace of Power System Expansion

Boyu Yao, Yury Dvorkin · 2026

Power system expansion depends on the equipment required to connect, convert, regulate, and condition electricity, yet grid-supporting equipment (GSE) is rarely modeled as an explicit constraint. We d…

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Engineering Preprint PDF DOI

AnchorRefine: Synergy-Manipulation Based on Trajectory Anchor and Residual Refinement for Vision-Language-Action Models

Tingzheng Jia, Kan Guo, Lanping Qian, Yongli Hu, Daxin Tian, Guixian Qu, Chunmian Lin, Baocai Yin, Jiapu Wang · 2026

Precision-critical manipulation requires both global trajectory organization and local execution correction, yet most vision-language-action (VLA) policies generate actions within a single unified spa…

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Engineering Preprint PDF DOI

Differentiable Object Pose Connectivity Metrics for Regrasp Sequence Optimization

Liang Qin, Weiwei Wan, Kensuke Harada · 2026

Regrasp planning is often required when one pick-and-place cannot transfer an object from an initial pose to a goal pose while maintaining grasp feasibility. The main challenge is to reason about shar…

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Engineering Preprint PDF DOI

OmniUMI: Towards Physically Grounded Robot Learning via Human-Aligned Multimodal Interaction

Shaqi Luo, Yuanyuan Li, Youhao Hu, Chenhao Yu, Chaoran Xu, Jiachen Zhang, Guocai Yao, Tiejun Huang, Ran He, Zhongyuan Wang · 2026

UMI-style interfaces enable scalable robot learning, but existing systems remain largely visuomotor, relying primarily on RGB observations and trajectory while providing only limited access to physica…

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Engineering Preprint PDF DOI

Scale-invariant projection optimization in tomographic volumetric additive manufacturing

Seungpyo Woo, Sangyup Lee, Hayden K. Taylor · 2026

Tomographic volumetric additive manufacturing (TVAM) requires projection patterns that achieve high in-part fidelity while suppressing unintended exposure outside the target. We present a scale-invari…

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Engineering Preprint PDF DOI

A-SLIP: Acoustic Sensing for Continuous In-hand Slip Estimation

Uksang Yoo, Yuemin Mao, Jean Oh, Jeffrey Ichnowski · 2026

Reliable in-hand manipulation requires accurate real-time estimation of slip between a gripper and a grasped object. Existing tactile sensing approaches based on vision, capacitance, or force-torque m…

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Engineering Preprint PDF DOI

TAMEn: Tactile-Aware Manipulation Engine for Closed-Loop Data Collection in Contact-Rich Tasks

Longyan Wu, Jieji Ren, Chenghang Jiang, Junxi Zhou, Shijia Peng, Ran Huang, Guoying Gu, Li Chen, Hongyang Li · 2026

Handheld paradigms offer an efficient and intuitive way for collecting large-scale demonstration of robot manipulation. However, achieving contact-rich bimanual manipulation through these methods rema…

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Engineering Preprint PDF DOI

Learning-Based Strategy for Composite Robot Assembly Skill Adaptation

Khalil Abuibaid, Aleksandr Sidorenko, Achim Wagner, Martin Ruskowski · 2026

Contact-rich robotic skills remain challenging for industrial robots due to tight geometric tolerances, frictional variability, and uncertain contact dynamics, particularly when using position-control…

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Engineering Preprint PDF DOI

A Physical Agentic Loop for Language-Guided Grasping with Execution-State Monitoring

Wenze Wang, Mehdi Hosseinzadeh, Feras Dayoub · 2026

Robotic manipulation systems that follow language instructions often execute grasp primitives in a largely single-shot manner: a model proposes an action, the robot executes it, and failures such as e…

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Engineering Preprint PDF DOI

Control Architecture and experimental validation of a Novel Surgical Robotic Instrument

Doina Pisla (CESTER), Ionut Zima (CESTER), Calin Vaida (CESTER), Andrei Cailean, Marius Miclaus (CESTER), Adrian Pisla (CESTER), Andrei Caprariu, Vasile Bulbucan (CESTER), Bogdan Gherman, Damien Chablat (LS2N - equipe RoMas, LS2N) · 2026

Minimally invasive surgery (MIS) reduces patient trauma and shortens recovery time; however, conventional laparoscopic instruments remain constrained by limited range of movements. This work presents …

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Engineering Preprint PDF DOI

Pickalo: Leveraging 6D Pose Estimation for Low-Cost Industrial Bin Picking

Alessandro Tarsi, Matteo Mastrogiuseppe, Saverio Taliani, Simone Cortinovis, Ugo Pattacini · 2026

Bin picking in real industrial environments remains challenging due to severe clutter, occlusions, and the high cost of traditional 3D sensing setups. We present Pickalo, a modular 6D pose-based bin-p…

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Engineering Preprint PDF DOI

A ROS 2 Wrapper for Florence-2: Multi-Mode Local Vision-Language Inference for Robotic Systems

J. E. Dominguez-Vidal · 2026

Foundation vision-language models are becoming increasingly relevant to robotics because they can provide richer semantic perception than narrow task-specific pipelines. However, their practical adopt…

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Engineering Preprint PDF DOI

An Integrated Soft Robotic System for Measuring Vital Signs in Search and Rescue Environments

Jorge Francisco Garcia-Samartin, Christyan Cruz Ulloa, Andres Sanchez-Silva, Jaime del Cerro, Antonio Barrientos · 2026

Robots are frequently utilized in search-and-rescue operations. In recent years, significant advancements have been made in the field of victim assessment. However, there are still open issues regardi…

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Engineering Preprint PDF DOI

Probe-to-Grasp Manipulation Using Self-Sensing Pneumatic Variable-Stiffness Joints

Ngoc Duy Tran, Yeman Fan, Feng Dai, Khang Nguyen, Anh Nguyen, Hoang Hiep Ly, Tung D. Ta, Shigeru Chiba · 2026

Grasping deformable objects with varying stiffness remains a significant challenge in robotics. Estimating the local stiffness of a target object is important for determining an optimal grasp pose tha…

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Engineering Preprint PDF DOI

Robotic Dexterous Manipulation via Anisotropic Friction Modulation using Passive Rollers

Ethan Fisk, Taeyoon Lee, Shenli Yuan · 2026

Controlling friction at the fingertip is fundamental to dexterous manipulation, yet remains difficult to realize in robotic hands. We present the design and analysis of a robotic fingertip equipped wi…

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Engineering Preprint PDF DOI

Four-Transistor Four-Diode (4T4D) Series/Parallel Chopper Module for Auto-Balancing STATCOM and Low Control and Development Complexity

Jinshui Zhang, Zane Mannings, Chris Dittmer, Angel V Peterchev, Stefan M Goetz · 2026

Static synchronous compensators (STATCOMs) manage reactive power compensation in modern power grids and have become essential for the integration of renewable energy sources such as wind farms. Cascad…

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