Simulating Passivity for Robotic Walkers via Authority-Sharing

We consider a robotic walking assistant used to guide senior users across a crowded space. The problem we address is how to guide the user using motorized back wheels. Our strategy aims to simulate a passive behavior in which the forward velocity is the one imposed by the user, who receives the impression of controlling the motion. The result is obtained leaving the user in control (without any actuation) when she/he follows straight lines, while the motors kick in when the user has to make a turn. We offer extensive theoretical proof of the validity of our strategy. The technique has been validated via extensive experimentation with a large group of older adults.

[1]  Ramón Ceres Ruíz,et al.  Assistive mobility devices focusing on Smart Walkers: Classification and review , 2012, Robotics Auton. Syst..

[2]  A. Kutiyanawala,et al.  iWalker: Toward a Rollator-Mounted Wayfinding System for the Elderly , 2008, 2008 IEEE International Conference on RFID.

[3]  Nak Young Chong,et al.  Design and control of JAIST active robotic walker , 2010, Intell. Serv. Robotics.

[4]  Cristina P. Santos,et al.  Real time control of the ASBGo walker through a physical human-robot interface , 2014 .

[5]  J. Edward Colgate,et al.  Passive Robotics: An Exploration of Mechanical Computation , 1990, 1990 American Control Conference.

[6]  Wolfram Burgard,et al.  Navigating blind people with a smart walker , 2015, 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[7]  Robert Luben,et al.  Combined Impact of Health Behaviours and Mortality in Men and Women: The EPIC-Norfolk Prospective Population Study , 2008, PLoS medicine.

[8]  Antonio M. Pascoal,et al.  Adaptive, non-singular path-following control of dynamic wheeled robots , 2003, 42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475).

[9]  Luigi Palopoli,et al.  Indoor Positioning of a Robotic Walking Assistant for Large Public Environments , 2015, IEEE Transactions on Instrumentation and Measurement.

[10]  Cheng-Jung Lee,et al.  Adaptive guidance system design for the assistive robotic walker , 2015, Neurocomputing.

[11]  Luigi Palopoli,et al.  Harnessing steering singularities in passive path following for robotic walkers , 2017, 2017 IEEE International Conference on Robotics and Automation (ICRA).

[12]  Luigi Palopoli,et al.  Path Following With Authority Sharing Between Humans and Passive Robotic Walkers Equipped With Low-Cost Actuators , 2017, IEEE Robotics and Automation Letters.

[13]  Chun-Hsu Ko,et al.  Effective Maneuver for Passive Robot Walking Helper Based on User Intention , 2015, IEEE Transactions on Industrial Electronics.

[14]  Kazuhiro Kosuge,et al.  Control of a passive walker using a depth sensor for user state estimation , 2011, 2011 IEEE International Conference on Robotics and Biomimetics.

[15]  Kazuhiro Kosuge,et al.  Motion Control of Passive Intelligent Walker Using Servo Brakes , 2007, IEEE Transactions on Robotics.

[16]  Luigi Palopoli,et al.  Passive robotic walker path following with bang-bang hybrid control paradigm , 2016, 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[17]  Daniele Fontanelli,et al.  Optimal placement of landmarks for indoor localization using sensors with a limited range , 2016, 2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN).

[18]  Luigi Palopoli,et al.  A passive guidance system for a robotic walking assistant using brakes , 2015, 2015 54th IEEE Conference on Decision and Control (CDC).

[19]  Ricardo G. Sanfelice,et al.  Hybrid Dynamical Systems: Modeling, Stability, and Robustness , 2012 .

[20]  P. Dawson,et al.  Staying Steady: A community-based exercise initiative for falls prevention , 2010, Physiotherapy theory and practice.

[21]  Kazuhiro Kosuge,et al.  A Control Approach Based on Passive Behavior to Enhance User Interaction , 2007, IEEE Transactions on Robotics.

[22]  Axel Legay,et al.  Efficient customisable dynamic motion planning for assistive robots in complex human environments , 2015, J. Ambient Intell. Smart Environ..

[23]  Antonis A. Argyros,et al.  Navigation assistance and guidance of older adults across complex public spaces: the DALi approach , 2015, Intell. Serv. Robotics.

[24]  Shuoyu Wang,et al.  A New Directional-Intent Recognition Method for Walking Training Using an Omnidirectional Robot , 2017, J. Intell. Robotic Syst..

[25]  Luigi Palopoli,et al.  Path following for robotic rollators via simulated passivity , 2017, 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

[26]  Chen-Yang Lin,et al.  Shared Control Design of a Walking-Assistant Robot , 2017, IEEE Transactions on Control Systems Technology.

[27]  Birgit Graf,et al.  An Adaptive Guidance System for Robotic Walking Aids , 2009, J. Comput. Inf. Technol..