AC SERVO MOTOR, ACTUATOR INTEGRAL WITH REDUCTION GEAR USING THE SAME, AND ROBOTIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an AC servo motor, along with an actuator integral with a reduction gear using the same and a robotic device, capable of using a servo motor near the limit of temperature rising for operation state display of the servo motor and diagnosis of abnormality of the motor.;SOLUTION: The AC servo motor comprises a stator core and a rotor core, arranged concentrically with a prescribed gap, with the stator core provided with an armature coil and the rotor core provided with a field permanent magnet. The AC servo motor incorporates a plurality of temperature detecting means 11 and comprises a storage means 23 for storing the temperature distribution of a motor at nominal operation, the temperature distribution under an excessive load, and the temperature distribution when a failure occurs, and an operation state judging means 24a which decides the operating state of the motor, by comparing the detected temperature by the temperature detecting means 11 with the temperature distribution information stored in the storage means 23 for temperature distribution.;COPYRIGHT: (C)2005,JPO&NCIPI