Driving control method and system of high-torque permanent magnet alternating current servo motor

Abstract

The invention provides a driving control method and system of a high-torque permanent magnet alternating current servo motor. The current of a motor coil winding and the working voltage of the motor are collected in a mutual inductance mode in the operation process of the alternating current servo motor, so that the real-time driving force output by the motor is determined, and whether the motor is in an overload lifting state or not is judged, so that the on-off state of the motor is controlled; and in addition, when the gravity center of an object in a device with the motor is unbalanced, the lifting speed of the object can be adaptively reduced, so that the output driving force of the motor can be reduced, meanwhile, the object can be stably lifted, so that the object is effectively prevented from swinging greatly in the lifting process, the stability of lifting motion of the object is improved, and it is guaranteed that the motor normally and continuously outputs driving force to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of motor drive control, in particular to a drive control method and system for a high-torque permanent magnet AC servo motor. Background technique [0002] High-torque permanent magnet AC servo motor refers to a permanent magnet-coil winding servo motor that is driven by alternating current and can output large torque. It can adjust the torque output by the motor by changing the driving voltage applied to the motor, thereby greatly controlling the load. drive. High-torque permanent magnet AC servo motors are widely used in heavy machines such as cranes and excavators for lifting and transporting heavy objects. However, in the process of lifting and transporting objects with high-torque permanent magnet AC servo motors, there may be situations where the weight of the objects is too large and the objects cannot be lifted and transported smoothly, resulting in the motor being in an overloaded working state and...

AI Technical Summary

Problems solved by technology

However, in the process of lifting and transporting objects with high-torque permanent magnet AC servo motors, there may be situations where the weight of the objects is too large and the objects cannot be lifted and transported smoothly, resulting in the motor being in an overloaded working state and It is impossible to guarantee the stable movement of the object during the lifting process, which is prone to the danger of the object falling or the motor rolling over and seriously affecting the normal operation of the motor

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