BRUSHLESS ELECTRICAL MACHINE AND DEVICE, MOBILE OBJECT, ELECTRIC GENERATOR, AND ROBOT INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a technology which improves the utilization efficiency of a magnetic field in a brushless electrical machine and thereby improving the efficiency of the electrical machine.

SOLUTION: A brushless electrical machine of this invention has: a first driving member 30U having multiple permanent magnets 32U; a second driving member 10 having multiple electromagnetic coils and moving relative to the first driving member 30U; and a third driving member 30L which is disposed at the opposite side of the first driving member 30U across the second driving member 10 and having the fixed relative positional relationship with the first driving member 30U. The second driving member 10 includes magnetic sensors 40A, 40B detecting the relative position of the first driving member and the second driving member and a control circuit utilizing output signals of the magnetic sensors and controlling the brushless electrical machine. The third driving member 30L has magnetic field strengthening members 32L, strengthening a magnetic field at a position of the second driving member 10 in cooperation with the respective permanent magnets of the first driving member 30U, at positions which face the respective permanent magnets of the first driving member 30U.

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