Apparatus for a dual powered actuator system. The system comprises a
support member supporting an article in movement along a first direction
and a second direction. A precision actuator is coupled with the support
member and responsive to an input signal to selectively move the support
member. A fluid actuator is also coupled with the support member to
selectively move the support member. An active fluid regulator provides a
first pressure to the fluid actuator in the first direction of the
support member and a second pressure to the fluid actuator in the second
direction of the support member, wherein the first and second pressures
are different. A controller activates the active fluid regulator and the
precision actuator.