| 摘要 |
An inertial drive actuator includes a displacement unit, a vibration substrate, a first magnetic field generator which generates a magnetic field, a movable body disposed on a flat surface of the vibration substrate, and which includes a first yoke that concentrates a magnetic flux of an N-pole and an S-pole generated by the first magnetic field generator, at a predetermined position, and a second yoke which is disposed on a side of the vibration substrate, opposite to a direction facing the movable body. A movement in a direction perpendicular to a direction in which, the movable body is driven is regulated mechanically by end portions of the second yoke facing end portions of the first yoke at an outer side of the vibration substrate, and a frictional force is controlled by controlling the magnetic field, and the movable body is driven. |
| 主权项 |
1. An inertial drive actuator comprising:
a displacement unit which causes a minute displacement in a first direction, and in a second direction which is opposite to the first direction; a vibration substrate which undergoes reciprocating movement due to the minute displacement caused by the displacement unit; a first magnetic field generator which generates a magnetic field; a movable body which is disposed on a flat surface of the vibration substrate, and which includes a first yoke that concentrates a magnetic flux of an N-pole and an S-pole generated by the first magnetic field generator, at a predetermined position; and a second yoke which is disposed on a side of the vibration substrate, opposite to a direction facing the movable body, wherein a movement in a direction perpendicular to a direction in which, the movable body is driven is regulated mechanically by end portions of the second yoke facing end portions of the first yoke at an outer side of the vibration substrate, and a frictional force acting between the movable body and the vibration substrate is controlled by controlling the magnetic field generated by the first magnetic field generator, and the movable body is driven. |
