A Low Moment of Inertia Servo Motor

Abstract

The invention discloses a low-rotational inertia servo motor, which belongs to the technical field of motors. The low-rotational inertia servo motor comprises a motor shell, an excitation stator ironcore, an armature stator iron core, a rotor iron core, an excitation winding, an armature winding and a shaft, and is characterized in that the disc-shaped rotor iron core is fixed on the shaft; the disc of the rotor iron core is provided with 4k uniformly-distributed fan-shaped through holes, and k is a positive integer; the two axial sides of the rotor iron core are provided with the excitationstator iron core and the armature stator iron core respectively; the excitation stator iron core is provided with 3k excitation stator poles protruding against one side of the rotor iron core, and theexcitation stator poles present a fan shape; and the armature stator iron core is provided with 3k armature stator poles protruding against one side of the rotor iron core, and the armature stator poles present a fan shape. The excitation winding and the armature winding in the technology are mutually isolated, the rotor iron core is only a disc with a large-area through hole, the rotational inertia is small, and the low-rotational inertia servo motor is facilitated.

Description

technical field [0001] The invention relates to a low moment of inertia servo motor, which belongs to the field of special motor engineering for electric vehicles. Background technique [0002] The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In the automatic control system, it is used as an actuator to convert the received electrical signal into an angular displacement or angular velocity output on the motor shaft. The reliability of the motor must be guaranteed when the servo motor is used in high-precision occasions. The reliability of its operation is generally determined by the motor control method and the structural design of the motor body. [0003] Servo motor is an electromechanical component, which plays the role of execution and detection in the system. In terms of operating principles, both servo motors and ordinary motors are devices that realize electromechanical energy conversion and signal transmission based on th...

AI Technical Summary

Problems solved by technology

[0006] The moment of inertia, as a parameter index of the servo motor, has an impact on many performances of the motor: high moment of inertia will cause the electromechanical time constant of the motor to increase, the sensitivity will be poor, the torque fluctuation will be large, and it will be unstable at low speed. Bring radio interference to the spark, and affect the life of the motor, so that the use of the motor is limited

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