A Driving Behaviour Model of Electrical Wheelchair Users

Area of Science:

• Robotics
• Human-Computer Interaction
• Rehabilitation Engineering

Background:

• Powered wheelchairs offer mobility but can present steering and maneuvering challenges for some users.
• Effective navigation is crucial for powered wheelchair users' independence and quality of life.
• Existing assistive systems may lack adaptability to individual user steering patterns.

Purpose of the Study:

• To develop a user-specific steering behavior model for powered wheelchairs.
• To integrate this model into assistive control systems for enhanced maneuverability.
• To improve the adaptability and effectiveness of powered wheelchair control.

Main Methods:

• Utilized the improved Directed Potential Field (DPF) method for trajectory planning.
• Formulated a linear-parameter behavior model based on user steering data.
• Employed ordinary least squares for parameter estimation.

Main Results:

• Successfully modeled the steering behavior of powered wheelchair users.
• Achieved satisfactory regression analysis results during parameter identification.
• Demonstrated the feasibility of creating a simple, adaptable user behavior model.

Conclusions:

• User-specific modeling is essential for adaptive assistive control in powered wheelchairs.
• The proposed DPF-based approach provides a viable method for capturing steering behavior.
• This research contributes to developing more intuitive and effective powered wheelchair control systems.