State determination device and state determination method for ball screw

Abstract

To provide a state determination device and a state determination method for ball screw that can improve noise resistance.SOLUTION: A state determination device for ball screw comprises: a vibration information generation part 201 which generates vibration information indicating the relation between a nut position of a ball screw and frequency-vibration level characteristics changing with the nut position based upon a vibration signal acquired by a vibration sensor 21 during the operation of a ball screw; and a determination part 202 which executes state determination processing for ball screw based upon first vibration information generated based upon a vibration signal acquired in a first period and second vibration information acquired in a second period after the first period.SELECTED DRAWING: Figure 2

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