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A bearingless motor (BelM) integrating function of an electric motor and a magnetic bearing (MB) can generate torque while magnetically suspending rotor shaft without mechanical contact.
In-pipe wheeled robots require friction on the wheels to maintain traction. Ability to vary this friction is highly desirable but conventionally used linkage mechanism is not suitable for it. This paper presents a novel mechanism generating adjustable friction with minimal energy consumption for in-pipe robots. The mechanism uses permanent magnets to achieve the objective. An appropriate model for...
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