A diagnostic apparatus includes an acquiring unit that acquires state information indicating an operational state of a motor for driving a shaft of a machine tool; a sensor that measures a physical quantity indicating an environment of the machine tool; a storage unit which stores a normal range of the state information corresponding to a value of the physical quantity; and a judging unit that, when the state information acquired by the acquiring unit is not within the normal range of the state information corresponding to the value of the physical quantity measured by the sensor, judges that the machine tool has an abnormality.

A malfunction detection device compares detected data on a condition at a predetermined part of an apparatus with a threshold so as to determine a malfunction of the apparatus. The malfunction detection device varies the threshold in accordance with a type of a lubricant used for movable parts of the apparatus.

A method of preventing arc flaring events for a welding system is provided. The method includes determining, by a controller, a real-time welding output characteristic of the welding system. The method additionally includes comparing, by the controller, the real-time welding output characteristic to a threshold welding output characteristic. The method further includes controlling an operating characteristic of the welding system in response to a determination that the real-time welding output characteristic exceeds the threshold welding output characteristic.

In a management system which manages user equipment installed in a prescribed space managed by a user, the user equipment including a plurality of motion guidance devices each including a track member, a moving member, and a plurality of displacement sensors which detect displacements of the moving member in a prescribed number of displacement directions in the moving member, on the basis of lifespan-related information corresponding to each of the plurality of motion guidance devices, a lifespan exhaustion ratio of each motion guidance device is calculated and, on the basis of the calculated lifespan exhaustion ratio, replacement object devices to be replaced within a prescribed period which constitute a part of or all of the plurality of motion guidance devices are determined. In addition, a user is notified of a replacement timing at which all of the determined replacement object devices in the user equipment are to be replaced.

In a management system which manages user equipment installed in a prescribed space managed by a user, the user equipment including a plurality of motion guidance devices each including a track member, a moving member, and a plurality of displacement sensors which detect displacements of the moving member in a prescribed number of displacement directions in the moving member, on the basis of lifespan-related information corresponding to each of the plurality of motion guidance devices, a lifespan exhaustion ratio of each motion guidance device is calculated and, on the basis of the calculated lifespan exhaustion ratio, replacement object devices to be replaced within a prescribed period which constitute a part of or all of the plurality of motion guidance devices are determined. In addition, a user is notified of a replacement timing at which all of the determined replacement object devices in the user equipment are to be replaced.

A control device includes: a machine learning unit that machine-learns a control parameter that determines operating characteristics of a driving unit of a machine serving as a driving target of a motor and sets the control parameter to a motor control device; a health check operation instruction unit that outputs an instruction for a health check operation of driving the motor control device; an operation evaluation unit that acquires information indicating the operating characteristics of the driving unit, calculates an evaluation value on the basis of an evaluation function, and stores the evaluation value in a storage unit; and a deterioration estimation operation unit that estimates deterioration in the operating characteristics of the driving unit of the machine on the basis of the evaluation value stored in the storage unit and the evaluation value calculated by the operation evaluation unit when the health check operation was performed.

An electromechanical servo gauge includes a displacer on a wire from a drum for causing a torque on the drum, a servo motor coupled by a drive shaft for rotating the drum, wherein a change in a liquid level moves the ESG out of balance, and a force transducer is positioned for measuring the torque on the drum and converting the torque into a physical quantity. The processor implements an automatic friction determination algorithm. A first move moves the displacer in a first direction for 1 motor step(s) to a first position and first physical quantity data including a first physical quantity (Q1) is measured by the transducer. Second moving moves the displacer in an opposite direction 1 step(s) to reach a second displacer position and second physical quantity data including a second physical quantity (Q2) is measured. A hysteresis measure is determined from the first and second physical quantity.

An automated system including a control target device and a control device which controls the control target device, in which it is possible to accurately estimate whether maintenance of the control target device is required and a portion requiring maintenance. The control device is an adaptive control device including a position control system, an adaptive identifier which estimates a parameter indicating a state of a control target device based on a control command and a control target output from the control target device, and an adaptive compensator which, based on the parameter which is estimated by the adaptive identifier, compensates the control command from the position control system to the control target device such that the control target device performs a planned operation regardless of a change in the parameter.

This machine tool system uses a plurality of mobile robots to convey workpieces to a plurality of machine tools, the machine tool system being provided with: machine tool control unit that issues work requests to the machine tools; a mobile robot control unit that determines workable times for the mobile robots on the basis of the work requests; and a determining unit that compares the workable times which are for the mobile robots and respectively planned by the mobile robots, and causes the mobile robot with the fastest workable time to execute the requested work.

An average value of differences between command current values acquired at a plurality of timings when the motor is controlled at a rotation speed within a preset fixed range in a preset period and an average value of the command current values in the period is acquired, and the average value of the differences is accumulated in an order of the acquisition. When a difference between an accumulated value of the average values of the differences up to an N1th time and an accumulated value of the average values of the differences up to an Nth time becomes greater than or equal to a preset value, and then become less than the preset value, and then again becomes greater than or equal to the preset value, a notification of an abnormality sign in the robot arm is transmitted.