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Daniel J. Gonzalez

8 accepted papers

2022

Map-Free Lidar Odometry (MFLO) Using a Range Flow Constraint and Point Patch Covariances

RA-L 2022

We present a lightweight real-time method to extract 3D ego-motion using a range flow constraint equation, point patch covariance, and a least squares solution. Our method exploits the structured data provided by range sensors, like rotating LiDARs, to attain 6 DOF odometry without building a map or

Cited by 4SourceScholar
2021

Autonomous Quadrotor Landing on Inclined Surfaces Using Perception-Guided Active Asymmetric Skids

RA-L 2021

We present an autonomous quadrotor capable of safely landing on sloped surfaces up to 40 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> , intended for emergency scenarios where the only terrain available for landing may be sloped. This system u

Cited by 10SourceScholar
2020

Dynamics and Aerial Attitude Control for Rapid Emergency Deployment of the Agile Ground Robot AGRO

IROS 2020poster

In this work we present a Four-Wheeled Independent Drive and Steering (4WIDS) robot named AGRO and a method of controlling its orientation while airborne using wheel reaction torques. This is the first documented use of independently steerable wheels to both drive on the ground and achieve aerial at…

Cited by 14SourceScholar
2020

Passive Quadrupedal Gait Synchronization for Extra Robotic Legs Using a Dynamically Coupled Double Rimless Wheel Model

ICRA 2020poster

The Extra Robotic Legs (XRL) system is a robotic augmentation worn by a human operator consisting of two articulated robot legs that walk with the operator and help bear a heavy backpack payload. It is desirable for the Human-XRL quadruped system to walk with the rear legs lead the front by 25% of t…

Cited by 12SourceScholar
2019

Hybrid Open-Loop Closed-Loop Control of Coupled Human-Robot Balance During Assisted Stance Transition With Extra Robotic Legs

RA-L 2019

A new approach to the human-robot shared control of the extra robotic legs (XRL) wearable augmentation system is presented. The XRL system consists of two extra legs that bear the entirety of its backpack payload, as well as some of the human operator's weight. The XRL system must support its own ba

Cited by 33SourceScholar
2018

Design of Extra Robotic Legs for Augmenting Human Payload Capabilities by Exploiting Singularity and Torque Redistribution

IROS 2018poster

We present the design of a new robotic human augmentation system that will assist the operator in carrying a heavy payload, reaching and maintaining difficult postures, and ultimately better performing their job. The Extra Robotic Legs (XRL) system is worn by the operator and consists of two articul…

Cited by 43SourceScholar
2017

Design and Analysis of 6-DOF Triple Scissor Extender Robots With Applications in Aircraft Assembly

RA-L 2017

A new type of parallel robot mechanism with an extendable structure is presented, and its kinematic properties and design parameters are analyzed. The triple scissor extender (TSE) is a six-degree-of-freedom robotic mechanism for reaching high ceilings and positioning an end effector. Three scissor

Cited by 30SourceScholar