초록 ▼

A moving-magnet type linear d.c. brushless motor having plural moving elements on a traveling track, and including a stator armature on the traveling track; n moving elements, each including a thrust-generating field magnet having P contiguous magnetic poles of alternating N and S polarity, where n

A moving-magnet type linear d.c. brushless motor having plural moving elements on a traveling track, and including a stator armature on the traveling track; n moving elements, each including a thrust-generating field magnet having P contiguous magnetic poles of alternating N and S polarity, where n is an integer greater than 1 and P is an integer of at least 1, the moving elements having one side facing the stator armature and traveling separately and independently along the traveling track; a plurality of position-detecting magnets, each corresponding to a different one of the moving elements and having P magnetic poles of N and S polarity at in-phase positions of substantially the same pitch relative to the poles of the thrust-generating magnets; and position detecting means including a group of position sensors corresponding to each position-detecting magnet for generating an electric current in the stator armature to move the moving elements in predetermined directions separately and independently, each position sensor detecting the magnet poles of only the corresponding position-detecting magnet.

대표청구항 ▼

A moving-magnet type linear d.c. brushless motor having plural moving elements, which comprises: a stator armature provided along a traveling track of moving elements; n moving elements, each including a thrust-generating field magnet having an arrangement of P contiguous magnetic poles of alternati

A moving-magnet type linear d.c. brushless motor having plural moving elements, which comprises: a stator armature provided along a traveling track of moving elements; n moving elements, each including a thrust-generating field magnet having an arrangement of P contiguous magnetic poles of alternating N and S polarity, where n is an integer of at least 2 and P is an integer of at least 1, the moving elements being face to face with the stator armature and traveling separately and independently; n position-detecting magnets, which are provided respectively on said n moving elements each of the position-detecting magnets having P magnetic poles of N and S polarity at in-phase position relative to the thrust-generating field magnets and substantially the same pitch as that between N and S magnetic poles in each of the thrust-generating field magnets; and n groups of position sensors, each group facing a corresponding one of the position-detecting magnets, and detecting signals from the magnetic poles of the corresponding position-detecting magnet, so that in accordance with respective detected signals of positions of the poles of the position-detecting magnets from said respective group of the position sensors, an electric current is caused to flow into the stator armature facing the thrust-generating field magnet of said moving element having said position-detecting magnet so as to generate thrust, which causes said detected moving element to move in a predetermined direction, whereby said moving elements are energized and controlled to travel separately and independently.