Workpiece mass estimation device

Abstract

The purpose of the present invention is to facilitate confirmation of whether or not repeated computations have been processed normally. This workpiece mass estimation device is a device for a machine. The machine includes a motor that drives a workpiece loading unit and a sensor that detects the state of the motor. The workpiece mass estimation device is provided with an identification unit, a storage unit, an estimation unit, and a display. The identification unit: identifies the value of a physical parameter of a driven body driven by output of the motor on the basis of the state of the motor detected by the sensor; and continues to update the identified value through repeated computation. The storage unit saves the value of the physical parameter being updated. The estimation unit estimates the mass of a workpiece on the basis of the final value of the physical parameter being updated. The display displays a graph indicating the course of the values of the physical parameter on the basis of data saved in the storage unit and displays the mass estimated by the estimation unit.

Dependencies are inferred from the claim text.