A compressed fluid supply system (10) comprises: a pressure adjustment unit (16) for adjusting the pressure of a compressed fluid supplied from a fluid supply source (14) to support members (30) supporting a movable member (26) so that the movable member can be driven through the use of the compressed fluid; a drive force acquisition unit (20) for acquiring a drive force of a motor (18) for driving the movable member; and a pressure control unit (48) for adjusting the pressure of the compressed fluid supplied to the support members by controlling the pressure adjustment unit on the basis of the drive force of the motor.
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