BRUSHLESS ELECTRICAL MACHINE, DEVICE PROVIDED WITH THE SAME, MOVABLE BODY AND ROBOT

摘要

PROBLEM TO BE SOLVED: To provide a technique that enhances utilization efficiency of a magnetic field in a brushless electrical machine and improves efficiency of the electrical machine.

SOLUTION: A brushless electrical machine according to the present invention includes: a first driving member 30U that has a plurality of permanent magnets 32U; a second driving member 10 that has a plurality of electromagnetic coils and is relatively movable with respect to the first driving member 30U; and a third driving member 30L disposed at an opposite side to the first driving member 30U with the second driving member 10 interposed therebetween of which a relative positional relation with the first driving member 30U is fixed. The second driving member 10 is provided with: magnetic sensors 40A and 40B for detecting a relative position between first and second driving members 30U and 10; and a controlling circuit for performing control of the brushless electrical machine by using output signals of the magnetic sensors 40A and 40B. The third driving member 30L has a magnetic field intensifying member 32L for intensifying a magnetic field at a position of the second driving member 10 in cooperation with each of the plurality of permanent magnets 32U of the first driving member 30U at a position opposite to each of the plurality of permanent magnets 32U.

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