CONDITION ESTIMATION APPARATUS CONTROL VALVE CONDITION ESTIMATION PROGRAM AND CONDITION ESTIMATION METHOD

摘要

A technique for accurately estimating the state of a control valve is provided. The state estimating device 400 includes a target position or an actual position of the first movable part in a control valve that controls the flow rate of the working fluid according to the position of the first movable part, or a second movable part that changes the position according to the flow rate of the working fluid. an acquisition unit for acquiring detection information of a data set including the target position or actual position of and the value of the input voltage or output voltage of the power supply circuit for supplying power to the control valve, and based on the detection information acquired by the acquisition unit and an estimator for estimating an abnormality in the power supply circuit.