| 摘要 |
<p>An electromagnetic actuator that detects the position or speed of a drive unit, a valve drive unit and a position or speed sensor that employ the electromagnetic actuator are provided. In the electromagnetic actuator, a magnetic flux generator generates and distributes the magnetic flux. When the magnetic flux changes because of movement of a movable unit, a magnetic path is formed in a magnetic path component that is provided along the direction of movement of the movable unit. The magnetic path passes through a magnetic component. The magnetic flux distributed to the magnetic component is then detected. <IMAGE></p> |
