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Types of Self Control Wheelchairs Self-control wheelchairs are used by many disabled people to move around. These chairs are great for daily mobility and can easily overcome obstacles and hills. They also have large rear flat free shock absorbent nylon tires. The velocity of translation of the wheelchair was determined using a local potential field method. Each feature vector was fed to a Gaussian encoder that outputs a discrete probabilistic distribution. The evidence that was accumulated was used to trigger visual feedback, and a command delivered when the thre