| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a linear motor actuator capable of vibrating a movable element without using mechanical resilience of an elastic body.SOLUTION: First and second permanent magnets 3a and 3b magnetized in an axial direction are disposed in a movable element 4 in the axial direction. First and second coils 1a and 1b surrounding the first and second permanent magnets 3a and 3b are disposed in a stator 2. Alternating current having different phases are applied to the first and second coils 1a and 1b so that a phase of thrust generated in the first coil 1a and a phase of thrust generated in the second coil 1b are shifted from each other, and a center-to-center pitch LC1 between centers of the first and second coils 1a and 1b in the axial direction is made equal to a pole-to-pole pitch LM1 or LM2 of the movable element.</p> |
