| 摘要 |
<p>There is provided a linear motor system capable of realizing a long stroke of a linear motor while saving energy and reducing cost. The linear motor system includes a linear motor (100), a controller (7) for supplying variable voltage, and a winding switching device (6) for opening/closing a phase winding (5) of each of phases constituting a plurality of winding groups (4) divided into the stroke direction. The winding switching device (6) is formed by three-phase rectification means, a semiconductor switch arranged at both sides of its DC output side, a resistor and a capacitor each connected in parallel. Each of the phase windings constituting the plurality of the winding group (4) has one end connected to the output end of the controller (7) and the other end connected to the AC input side of the three-phase rectification means of the winding switching device (6). By opening/closing the semiconductor switch of the winding switching device (6), it is possible to excite a desired winding group (4) among the plurality of winding groups (4) divided in the stroke direction.</p> |
