Faculty of Computing
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Publication Embargo Modeling Vision Utility for Side-by-Side Navigation of Robot-Human Pairs(IEEE, 2019-10-17) Jayawardena, C; Kehelella, P; De Silva, RSide-by-side robot navigation has significant direct benefits; especially when robotic wheelchairs are used. In addition to navigation issues faced by any mobile robot, side-by-side navigation has some other challenges as well. Maintaining side-by-side formation, avoiding collisions with minimal disturbance to the side-by-side formation, and maintaining the optimal social relationship are some of those challenges. This paper presents a novel decision making model for human-robot side by side navigation. The development of the model was based on observations of real-world human behaviour and data collections done through a user study. The developed model was calibrated and tested using a simulator as-well-as a laboratory experiment.Publication Embargo A decision making model for optimizing social relationship for side-by-side robotic wheelchairs in active mode(IEEE, 2016-06-26) Nguyen, V; Jayawardena, CNowadays, not only the ability to navigate to destinations but also the ability to navigate in harmony in crowded environments is a crucial feature that helps mobile robots to be accepted in daily routines of humans. In the case of wheelchairs that can move in parallel to a caregiver (side-by-side), this requirement is more complex as the navigation should be comfortable to the wheelchair user, caregiver, as-well-as surrounding people. This study aims to propose a novel decision model for robotic wheelchairs for passing obstacles when moving side-by-side with a human. The proposed model was developed by studying human behavior.Publication Embargo An alternative approach for developing socially assistive robots(IEEE, 2014-08-12) Sarrafzadeh, A; Jayawardena, CThis paper presents the design of the socially as-sistive companion robotic wheelchair named RoboChair. Unlike in most current companion robotics projects, the approach of RoboChair is not to build a completely new robotic device. Instead, the focus of the RoboChair project is to convert an already useful device (i.e. wheelchair) to a socially assistive companion robot. The authors argue that there are number of advantages in this approach. The proposed robotic chair is a mobile robot that can carry a person. It is equipped with several measuring devices for measuring vital signs. The robot chair is capable of engaging users with interactive dialogs through a touch screen and by using human-robot interaction techniques. It has a scalable modular software architecture so that adding new hardware and software modules is straightforward. The software framework is based on Robot Operating System (ROS) open source robotic middleware.Publication Embargo Design, implementation and field tests of a socially assistive robot for the elderly: Healthbot version 2(IEEE, 2012-06-24) Jayawardena, C; Kuo, I; Datta, C; Stafford, R.Q; Broadbent, E; MacDonald, B. AThis paper presents the second version of a mobile service robot (HealthBot) designed for older people. The lessons learned from studies of the first version of the robot at a retirement village, and design decisions for the second version, are discussed. Technical requirements of field trials, a focus on cognitive human-robot interactions, the importance of working together in a multidisciplinary team, and the necessity for rapid iterative development suggested a new software framework. The features of new framework are discussed and implementation details are presented. Details of field trials and user acceptance results are presented. Results are promising for older-user acceptance of the robot.Publication Embargo Deployment of a service robot to help older people(IEEE, 2010-10-18) Jayawardena, C; Kuo, I. H; Unger, U; Igic, A; Wong, R; Watson, C.I; Stafford, R.Q; Broadbent, E; Tiwari, P; Warren, J; Sohn, J; MacDonald, B.AThis paper presents the first version of a mobile service robot designed for older people. Six service application modules were developed with the key objective being successful interaction between the robot and the older people. A series of trials were conducted in an independent living facility at a retirement village, with the participation of 32 residents and 21 staff. In this paper, challenges of deploying the robot and lessons learned are discussed. Results show that the robot could successfully interact with people and gain their acceptance.Publication Embargo Deployment of a service robot to help older people(IEEE, 2010-10-18) Jayawardena, C; Kuo, I. H; Unger, U; Igic, A; Wong, R; Watson, C. I; Stafford, Q. R; Broadbent, E; Tiwari, P; Warren, J; Sohn, J; MacDonald, B. AThis paper presents the first version of a mobile service robot designed for older people. Six service application modules were developed with the key objective being successful interaction between the robot and the older people. A series of trials were conducted in an independent living facility at a retirement village, with the participation of 32 residents and 21 staff. In this paper, challenges of deploying the robot and lessons learned are discussed. Results show that the robot could successfully interact with people and gain their acceptance.