Patent ID: 8315770
Filing Date: 2012-11-20
Classification: B62D

Abstract:
1. A motorized wheelchair, comprising: left and right drive wheels connected to and providing rolling support for said motorized wheelchair; a left motor in operative communication with the left drive wheel; a right motor in operative communication with the right drive wheel; a first rate-of-turn sensor arranged to provide a first signal related to an actual turn rate of the motorized wheelchair; a first speed sensor arranged to provide a second signal related to a speed of said left drive wheel; a second speed sensor arranged to provide a third signal related to a speed of said right drive wheel; and a controller in operative communication with the left and right motors, first rate-of-turn sensor, and said first and second speed sensors, said controller arranged to independently control the left and right motors to drive the left and right drive wheels based at least in part on operator manipulation of one or more input devices, said controller also arranged to combine the first, second, and third signals to detect drift.