Miniature linear actuator

摘要

The objective was to design and develop a linear actuator for two different applications using one basic design philosophy. The basic design configuration was based on an incremental rotary actuator, which was derived from the family of standard SMD actuators. Linear motion was obtained from a precision ball-screw attached to the rotary output member of the actuator. This arrangement produced a linear output motion at the mating ball-nut. In one application, the actuator was used to precisely position two sliding loads within a RF Variable Power Divider. The other application required the linear actuator to rotate a reflector around a gimbal pivot point within an Antenna Pointing Mechanism.