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Tianjian Chen

5 accepted papers

2021

Design Paradigms Based on Spring Agonists for Underactuated Robot Hands: Concepts and Application

ICRA 2021poster

In this paper, we focus on a rarely used paradigm in the design of underactuated robot hands: the use of springs as agonists and tendons as antagonists. We formalize this approach in a design matrix also considering its interplay with the underactuation method used (one tendon for multiple joints vs…

Cited by 4SourceScholar
2020

Hardware as Policy: Mechanical and Computational Co-Optimization using Deep Reinforcement Learning

CoRL 2020

Deep Reinforcement Learning (RL) has shown great success in learning complex control policies for a variety of applications in robotics. However, in most such cases, the hardware of the robot has been considered immutable, modeled as part of the environment. In this study, we explore the problem of

2018

Proprioception-Based Grasping for Unknown Objects Using a Series-Elastic-Actuated Gripper

IROS 2018poster

Grasping unknown objects has been an active research topic for decades. Approaches range from using various sensors (e.g. vision, tactile) to gain information about the object, to building passively compliant hands that react appropriately to contacts. In this paper, we focus on grasping unknown obj…

Cited by 10SourceScholar
2015

An ankle-foot prosthesis emulator with control of plantarflexion and inversion-eversion torque

ICRA 2015poster

Ankle inversion-eversion compliance is an important feature of conventional prosthetic feet, and control of inversion, or roll, in robotic prostheses could improve balance for people with amputation. We designed a tethered ankle-foot prosthesis with two independently-actuated toes that are coordinat…

Cited by 55SourceScholar