Closed loop mover assembly with measurement system

摘要

A mover assembly ( 16 ) that moves or positions an object ( 12 ) includes a mover output ( 226 ), an actuator ( 230 ), and a measurement system ( 20 ). The mover output ( 226 ) is connected o the object ( 12 ), and the actuator ( 230 ) causes the mover output ( 226 ) to rotate about a first axis and move along the first axis. In this embodiment, the measurement system ( 20 ) directly measures the movement of the mover output ( 226 ) and provides feedback regarding the position of the mover output ( 226 ).