Exploring Control Authority Preferences in Robotic Arm Assistance for Power Wheelchair Users
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Published:2024-03-07
Issue:3
Volume:13
Page:104
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ISSN:2076-0825
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Container-title:Actuators
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language:en
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Short-container-title:Actuators
Author:
Styler Breelyn Kane1, Deng Wei1ORCID, Simmons Reid2, Admoni Henny2ORCID, Cooper Rory123, Ding Dan13
Affiliation:
1. Human Engineering Research Laboratories, VA Pittsburgh Healthcare System, Pittsburgh, PA 15206, USA 2. The Robotics Institute, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA 3. Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA 15213, USA
Abstract
This paper uses mixed methods to explore the preliminary design of control authority preferences for an Assistive Robotic Manipulator (ARM). To familiarize users with an intelligent robotic arm, we perform two kitchen task iterations: one with user-initiated software autonomy (predefined autonomous actions) and one with manual control. Then, we introduce a third scenario, enabling users to choose between manual control and system delegation throughout the task. Results showed that, while manually switching modes and controlling the arm via joystick had a higher mental workload, participants still preferred full joystick control. Thematic analysis indicates manual control offered greater freedom and sense of accomplishment. Participants reacted positively to the idea of an interactive assistive system. Users did not want to ask the system to only assist, by taking over for certain actions, but also asked for situational feedback (e.g., ‘How close am I (the gripper)?’, ‘Is the lid centered over the jug?’). This speaks to a future assistive system that ensures the user feels like they drive the system for the entirety of the task and provides action collaboration in addition to more granular situational awareness feedback.
Funder
United States Veterans Affairs (VA) Rehabilitation Research and Development Services Paralyzed Veterans of America
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