2 citations · 8 across the 13 of their papers we have counts for
13 papers
Language-guided Robust Navigation for Mobile Robots in Dynamically-changing Environments
Cody Simons, Zhichao Liu, Brandon Marcus +2
In this paper, we develop an embodied AI system for human-in-the-loop navigation with a wheeled mobile robot. We propose a direct yet effective method of monitoring the robot's cur…
Hierarchical Tri-manual Planning for Vision-assisted Fruit Harvesting with Quadrupedal Robots
Zhichao Liu, Jingzong Zhou, Konstantinos Karydis
This paper addresses the challenge of developing a multi-arm quadrupedal robot capable of efficiently harvesting fruit in complex, natural environments. To overcome the inherent li…
Vision-assisted Avocado Harvesting with Aerial Bimanual Manipulation
Zhichao Liu, Jingzong Zhou, Caio Mucchiani +1
Robotic fruit harvesting holds potential in precision agriculture to improve harvesting efficiency. While ground mobile robots are mostly employed in fruit harvesting, certain crop…
Robust Generalized Proportional Integral Control for Trajectory Tracking of Soft Actuators in a Pediatric Wearable Assistive Device
Caio Mucchiani, Zhichao Liu, Ipsita Sahin +2
Soft robotics hold promise in the development of safe yet powered assistive wearable devices for infants. Key to this is the development of closed-loop controllers that can help re…
Dynamic Modeling and Analysis of Impact-resilient MAVs Undergoing High-speed and Large-angle Collisions with the Environment
Zhichao Liu, Konstantinos Karydis
Micro Aerial Vehicles (MAVs) often face a high risk of collision during autonomous flight, particularly in cluttered and unstructured environments. To mitigate the collision impact…
Contact-Prioritized Planning of Impact-Resilient Aerial Robots with an Integrated Compliant Arm
Zhichao Liu, Zhouyu Lu, Ali-akbar Agha-mohammadi +1
The article develops an impact-resilient aerial robot (s-ARQ) equipped with a compliant arm to sense contacts and reduce collision impact and featuring a real-time contact force es…
Koopman Operators for Modeling and Control of Soft Robotics
Lu Shi, Zhichao Liu, Konstantinos Karydis
Purpose of review: We review recent advances in algorithmic development and validation for modeling and control of soft robots leveraging the Koopman operator theory. Recent findin…
Online Search-based Collision-inclusive Motion Planning and Control for Impact-resilient Mobile Robots
Zhouyu Lu, Zhichao Liu, Merrick Campbell +1
This paper focuses on the emerging paradigm shift of collision-inclusive motion planning and control for impact-resilient mobile robots, and develops a unified hierarchical framewo…
Closed-loop Position Control of a Pediatric Soft Robotic Wearable Device for Upper Extremity Assistance
Caio Mucchiani, Zhichao Liu, Ipsita Sahin +4
This work focuses on closed-loop control based on proprioceptive feedback for a pneumatically-actuated soft wearable device aimed at future support of infant reaching tasks. The de…
Deformation Recovery Control and Post-Impact Trajectory Replanning for Collision-Resilient Mobile Robots
Zhouyu Lu, Zhichao Liu, Konstantinos Karydis
The paper focuses on collision-inclusive motion planning for impact-resilient mobile robots. We propose a new deformation recovery and replanning strategy to handle collisions that…
Position Control and Variable-Height Trajectory Tracking of a Soft Pneumatic Legged Robot
Zhichao Liu, Konstantinos Karydis
Soft pneumatic legged robots show promise in their ability to traverse a range of different types of terrain, including natural unstructured terrain met in applications like precis…
Toward Impact-resilient Quadrotor Design, Collision Characterization and Recovery Control to Sustain Flight after Collisions
Zhichao Liu, Konstantinos Karydis
Collision detection and recovery for aerial robots remain a challenge because of the limited space for sensors and local stability of the flight controller. We introduce a novel co…
Motion Planning for Collision-resilient Mobile Robots in Obstacle-cluttered Unknown Environments with Risk Reward Trade-offs
Zhouyu Lu, Zhichao Liu, Gustavo J. Correa +1
Collision avoidance in unknown obstacle-cluttered environments may not always be feasible. This paper focuses on an emerging paradigm shift in which potential collisions with the e…