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Types of Self Control Wheelchairs Self-control wheelchairs are used by many people with disabilities to get around. These chairs are ideal for everyday mobility and can easily climb up hills and other obstacles. They also have a large rear flat free shock absorbent nylon tires. The translation velocity of the wheelchair was measured using a local potential field approach. Each feature vector was fed to a Gaussian encoder which output an unidirectional probabilistic distribution. The accumulated evidence was used to control the visual feedback, and a