Patent ID: 8148931
Filing Date: 2012-04-03
Classification: G05B

Abstract:
1. A multi-degree-of-freedom stage control system comprising: a multi-degree-of-freedom stage structured by a plurality of actuators; an instruction generator for generating instructions of plural degrees of freedom; a position arithmetic unit for calculating positions of plural degrees of freedom from signals of a plurality of sensors attached to a control object, a control arithmetic unit for calculating operation amounts of plural degrees of freedom from the instructions of plural degrees of freedom and the positions of plural degrees of freedom; a thrust force conversion arithmetic unit for calculating thrust force instructions of the plurality of actuators from the operation amounts of the plural degrees of freedom; a current instruction unit for calculating current instructions which should be flowed to the plurality of actuators; and a sensor configuration input device for selecting a desired sensor configuration from among a plurality of sensor configurations, wherein the positions of plural degrees of freedom are calculated by using a position arithmetic expression corresponding to a selected sensor configuration.