Method, device and equipment for detecting eccentricity between stator and rotor of servo motor
A technology of servo motors and detection devices, applied in the direction of mechanical measuring devices, measuring devices, mechanical devices, etc., can solve problems such as mechanical wear, efficiency reduction, heat generation, etc., and achieve accurate calculations and facilitate rework
Active Publication Date: 2017-11-28
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology
Since the motor is closed after assembly, there are no tools or testing equipment that can detect the eccentricity between the motor stator and rotor, and it is impossible to evaluate whether there is eccentricity between the motor stator and rotor, especially some small eccentricities in occasional tests It cannot be reflected, only through long-term uninterrupted operation, can we know that the motor has eccentricity after mechanical friction occurs between the motor stator and rotor
However, due to the friction caused by the eccentricity of the motor, it will generally cause irreversible mechanical wear, resulting in the scrapping of the motor.
[0005] In the existing servo motor, when there is eccentricity between the motor stator and rotor, it will cause the current of the servo motor to increase, the efficiency will decrease, and the heat will be serious, and the life of the motor shaft will also be shortened; when the eccentricity is large to a certain extent, the motor Mechanical friction will occur between the stator and the rotor, resulting in the scrapping of the motor
Method used
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[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0071] The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0072] At the same time, it should be understood that, for the convenience of d...
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The invention discloses a method, a device and equipment for detecting offset between a stator and a rotor of a servo motor. The method comprises steps that values of encoders corresponding to at least three rotor magnetic poles of the servo motor are read, and the encoders are arranged on a shaft of the servo motor; the offset between the stator and the rotor of the servo motor is acquired according to the values of the encoders. According to the method, through using the encoders to acquire the position of the rotor magnetic poles, so the offset of the motor can be accurately calculated, the offset between the stator and the rotor of the servo motor can be foreseeingly calculated before operation of the motor, reworking convenience is realized, and problems caused by overlarge offset between stators and rotors of factory servo motors can be avoided.
Description
technical field [0001] The invention relates to the field of servo motor testing, in particular to a method, device and equipment for detecting eccentricity between stator and rotor of a servo motor. Background technique [0002] The AC servo system plays an important role in the industrial field. The control system has been widely used in many high-tech fields, such as robots, CNC machine tools, radar and various military weapon servo systems and flexible manufacturing systems. The servo system consists of a machine tool numerical control system (Computer Numerical Controller, CNC), a servo drive control device and a servo motor. The CNC device is the "brain" that issues commands for CNC machine tools and machining centers, while the servo drives, motors and their machinery are the "limbs", a kind of "executive agency". Servo drives, motors and their mechanics execute motion commands from the CNC unit. As an actuator that converts electrical energy into mechanical energy,...
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IPC IPC(8): H02K15/02G01B5/252
CPCG01B5/252H02K15/02
Inventor 许凤霞王长恺张东盛焦雷康燕韦建聪
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION