@article{ref1,
title="A simple controller with speed sensing for wheelchairs",
journal="Medical progress through technology",
year="1980",
author="Durie, N.D. and Farley, R.L.",
volume="7",
number="4",
pages="199-202",
abstract="This controller addresses the problem of unwanted curved-path operation in electric wheelchairs. The problem results in the vehicle following a slightly curved path, caused by variations in wheel loading, motor power, or terrain. This simple control system senses the speeds of the wheels and applies corrections to keep them equal. A simple electric conversion for manual wheelchairs is also shown.<p /><p>Language: en</p>",
language="en",
issn="0047-6552",
doi="",
url="http://dx.doi.org/"
}