State detection device, state detection method, and computer program

A state detection method comprising:

• a numerical value acquisition step of acquiring a specific numerical value continuously detected and/or specified;
• and a prediction value specification step of specifying, based on a plurality of the specific numerical values acquired in the numerical value acquisition step, a prediction value of a specific numerical value next to the plurality of specific numerical values, the state detection method being for detecting a state based on the specific numerical value acquired in the numerical value acquisition step and the prediction value specified in the prediction value specification step, wherein
• in the prediction value specification step,
• when a difference between the specified prediction value and the specific numerical value corresponding to the prediction value is a predetermined value or more, the prediction value is replaced with the specific numerical value corresponding to the prediction value, and a next prediction value and a subsequent prediction value are specified, and
• when the difference between the specified prediction value and the specific numerical value corresponding to the prediction value is less than the predetermined value, the prediction value is not replaced with the specific numerical value corresponding to the prediction value, and the next prediction value and the subsequent prediction value are specified using the specific numerical value.

A state detection device that detects a state of a valve that changes an opening degree according to an input command signal, the state detection device comprising:

• a numerical value acquisition unit that acquires, as a specific numerical value continuously detected and/or specified, information on an actual opening degree of the valve;
• and
• a prediction value specification unit that specifies, based on the information on a plurality of the actual opening degrees acquired by the numerical value acquisition unit, a prediction value of an actual opening degree next to the plurality of actual opening degrees, wherein
• the state is detected based on the information on the actual opening degree of the valve acquired by the numerical value acquisition unit and the prediction value of the actual opening degree specified by the prediction value specification unit,
• the prediction value specification unit
• replaces, when a difference between the specified prediction value and the actual opening degree corresponding to the prediction value is a predetermined value or more, the prediction value with the actual opening degree corresponding to the prediction value, and specifies a next prediction value and a subsequent prediction value, and
• does not replace, when the difference between the specified prediction value and the actual opening degree corresponding to the prediction value is less than the predetermined value, the prediction value with the actual opening degree corresponding to the prediction value, and specifies the next prediction value and the subsequent prediction value using the actual opening degree.