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A joystick controlled wheelchair.

J S Amundson1, S G Amundson

  • 1North Dakota State Univ., Fargo.

Biomedical Sciences Instrumentation
|January 1, 1991
PubMed
Summary

A joystick-controlled wheelchair was developed for children with limited strength. This accessible motor control system requires further modifications for optimal functionality.

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Engineering

Background:

  • Children with limited physical strength often face challenges operating standard wheelchairs.
  • Accessible and intuitive control systems are crucial for enhancing mobility and independence in pediatric users.

Purpose of the Study:

  • To design and construct a joystick-based motor control system for a child's wheelchair.
  • To enable children with reduced strength to independently operate a powered wheelchair.

Main Methods:

  • A joystick mechanism utilizing resistors for input signal generation.
  • Pulse Width Modulation (PWM) circuits to manage motor speed and direction.
  • An H-bridge network to control the motors for each rear wheel.
  • Integration of a master power switch for instructor control in educational settings.

Main Results:

  • A functional prototype of the joystick-based wheelchair controller was successfully built.
  • The system incorporates essential components for proportional motor control and safety features.
  • Identified necessity for modifications to ensure proper and reliable operation.

Conclusions:

  • The developed joystick control system offers a promising solution for pediatric wheelchair mobility.
  • Further engineering refinements are required to optimize performance and ensure full operational capability.
  • This project highlights the potential for customized assistive technology in pediatric rehabilitation.

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