Wheelchair collaborative control for disabled users navigating indoors

Cristina Urdiales, Manuel Fernández-Carmona, José M. Peula, Ulises Cortés, Roberta Annichiaricco, Carlo Caltagirone, Francisco Sandoval

Research output: Contribution to journalArticle

Abstract

Objective: Mobility is of key importance for autonomous living. Persons with severe disabilities may be assisted by robotic wheelchairs when manual control is not possible. However, these persons should contribute to control as much as they can to avoid loss of residual skills and frustration. Traditionally, wheelchair shared control approaches either give control to person or robot depending on the situation. Methods and materials: We propose a new shared control technique where robot and person contribute simultaneously to control. Their commands are weighted according to their respective local efficiencies and then combined via a reactive navigation strategy. Thus, assistance adapts to the user's needs. We refer to this approach as collaborative control. Results: Collaborative control was tested in a home environment in Fondazione Santa Lucia (Rome) by 18 volunteers presenting different degrees of physical and cognitive disability. All of them successfully finished a complex test path with assistance. Both users and caregivers' opinion on the system was very positive. Acceptance was very good according to the psychosocial impact of assistive devices scale. Conclusions: Collaborative control adapts to the person's needs and assists him/her when necessary, locally compensating any problem related to specific disabilities. An ANOVA returned a p-value of 0.016, meaning that there is significant improvement in task performance when collaborative control is used.

Original languageEnglish
Pages (from-to)177-191
Number of pages15
JournalArtificial Intelligence in Medicine
Volume52
Issue number3
DOIs
Publication statusPublished - Jul 2011

Keywords

  • Adaptive assistance
  • Assisted wheelchair navigation
  • Collaborative control
  • Reactive architecture
  • Rehabilitation

ASJC Scopus subject areas

  • Artificial Intelligence
  • Medicine (miscellaneous)

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    Urdiales, C., Fernández-Carmona, M., Peula, J. M., Cortés, U., Annichiaricco, R., Caltagirone, C., & Sandoval, F. (2011). Wheelchair collaborative control for disabled users navigating indoors. Artificial Intelligence in Medicine, 52(3), 177-191. https://doi.org/10.1016/j.artmed.2011.05.002