Fanuc Corporation

Akira Yamaguchi

Akira Nishifukumoto

Tsuyoshi Furuya

Shunsuke Iwanami

Yoshitarou Takimoto

An electric motor includes a shaft, and a stator disposed around the outer periphery of the shaft and including a plurality of slots extending toward the shaft. A plurality of coil units are arranged respectively in the plurality of slots. The coil units are each formed of a plurality of wires connected in parallel. One of the coil units that is arranged in at least one of the plurality of slots formed in the stator includes a plurality of winding groups that are connected in series and that have a different number of turns from each other. The winding groups are arranged in the slot in descending order of the number of turns in the direction toward the shaft.

Electric motor and manufacturing method of electric motor

A machine learning device which learns a correlation between shipment inspection information obtained by inspecting an object in shipment thereof and operation alarm information issued during operation of the object, includes a state observation unit which observes the shipment inspection information and the operation alarm information; and a learning unit which generates a learning model based on the shipment inspection information and the operation alarm information observed by the state observation unit.

Machine learning device and machine learning method for learning correlation between shipment inspection information and operation alarm information for object

A management device includes a data acquisition unit that collects data related to power consumption supplied to a plurality of industrial machines from at least a power supply facility, a preprocessing unit that creates power consumption data based on the collected data, a decision making unit that determines a behavior of allocating a predetermined total suspension time to the plurality of industrial machines with respect to a current state of power consumption by the plurality of industrial machines with reference to a learning model associating a value of a behavior of allocating the predetermined total suspension time to the plurality of industrial machines with a state of power consumption by the plurality of industrial machines based on power consumption data, and a suspension time allocation unit that allocates the suspension time to the plurality of industrial machines.

Management system and management device for a plurality of industrial machines supplied with power from a power supply facility

A temperature abnormality detection device that detects an abnormality in temperature of a motor including a stator and a rotor, includes: a temperature acquisition unit that acquires a temperature of a winding of the stator; a speed acquisition unit that acquires a rotation speed of the rotor; an allowable value changing unit that changes an allowable value for the temperature of the winding in accordance with an acquired rotation speed of the rotor; a comparison unit that compares an acquired temperature of the winding with a changed allowable value for the temperature of the winding based on the rotation speed of the rotor; and an output control unit that controls an external output of a warning signal indicating an excess of the temperature of the winding with respect to the allowable value.

Temperature abnormality detection device and motor

An electric motor comprising: an motor main body, a fan motor for cooling the motor main body, and a casing which is attached to the motor main body to hold the fan motor, wherein the fan motor has engagement parts, and both of the motor main body and the casing are provided with engagement parts which can engage with the engagement parts on the fan motor to fasten the fan motor.

Electric motor with fan motor

A motor control apparatus according to one aspect of the present invention is configured to be connected to a motor by a wiring line, and includes: a motor driving unit for driving a motor; a current command unit for commanding supply of current to the motor driving unit; and, a miswiring detecting unit for detecting miswiring of lines connected to motors by acquiring via wiring lines a signal indicating the motor temperature detected by a motor temperature detector provided for the motor, wherein the miswiring detecting unit detects presence or absence of miswiring of the wiring lines, based on the change of the motor temperature when the current command unit commands supply of reactive current to the motor driving unit.

Motor control apparatus having a function of detecting miswiring

An electric motor comprising a housing, a stator which is fastened to the housing, a rotor which is arranged at an inside of the stator, a bearing which is attached to the housing to support a shaft of the rotor, a shield member which is attached to the bearing to prevent scattering of lubricant enclosed in the bearing, and a scatter preventing member which extends from the housing so as to be positioned between the bearing and an iron core of the rotor, and prevents scattering of component parts of the bearing to the inside of the housing.

Electric motor with scatter preventing member of bearing part

An electric motor having a rotor structure and a production method thereof, wherein a strain due to temperature change does not occur and a manufacturing problem does not occur. Each permanent magnet does not contact each other, and a deformable intervening member is positioned between the end surfaces of the magnets. Intervening member is an elastically or plastically deformable member, and the thickness of the intervening member in the direction of the rotation axis of the rotor is determined so that the neighboring permanent magnets, which are bonded to a rotor core within a manufacturing temperature range of the rotor, do not contact each other at a lower limit of an operating temperature of the electric motor.

Growing community of inventors

Yamanashi, Japan

Akira Yamaguchi