Controller of servo motor

Abstract

The invention discloses a controller of a servo motor. The controller comprises a support frame base cover and a controller chip mounting box base cover; the support frame base cover is of a conductorstructure, and the bottom of the support frame base cover is grounded. At least two cavity base covers are arranged on the support frame base cover; the controller chip mounting box base cover is buckled and fixed on the cavity base cover, and a cathode outgoing line of the controller chip is communicated with the support frame base cover. The controller is simple in machining process, convenientto install, high in universality and higher in stability.

Description

technical field [0001] The invention relates to a controller of a servo motor, which belongs to the application field of motor control technology. Background technique [0002] In the prior art, during the driving process of the servo motor (generally a 3-phase AC motor, or two 3-phase AC motors, forming six input ends), a controller is installed between the servo motor and the drive end , to realize the rectification of the output of the servo motor, and the control of the power level or output opening and closing. [0003] Some existing simple controllers (or called PS machines) can only rectify the servo motor. Its structure includes two bases. The two bases are integrally cast with metal materials. The two bases are insulated from each other. One of the bases Grounded, the other substrate is provided with a rectifier bridge control element composed of diodes, the negative terminal of the control element is connected to the grounded substrate, and the positive electrode ...

AI Technical Summary

Problems solved by technology

[0003] Some existing simple controllers (or called PS machines) can only rectify the servo motor. Its structure includes two bases. The two bases are integrally cast with metal materials. The two bases are insulated from each other. One of the bases Grounded, the other substrate is provided with a rectifier bridge control element composed of diodes, the negative terminal of the control element is connected to the grounded substrate, and the positive electrode (conductor sheet structure) of the control element is also connected to the external wire through the connecting column on the corresponding substrate. In order to ensure the stable connection between the positive pole of the control element and the external wire on the connecting column, it is necessary to put the nut on the connecting column, and use a torque (the size of the torque refers to the existing technical standards) to make the positive pole of the control element and the connection end of the external wire close to each other. Therefore, the connecting column must be fixed with the basic connection (that is, the connecting column cannot have up-and-down displacement or left-right offset), but the material of the connecting column and the base body with the control element is inconsistent (considering the casting process, its own material and assembly cost), making the connecting column It is difficult to overcome the effect of the above-mentioned torque by the fixing method with the base (in the prior art, the connecting column is generally fixed on the base through the through hole on the base by rivets), which is easy to cause vibration or other external factors in the later stage. Make the connection between the substrate and the looseness or offset, resulting in unstable connection between the control element and the external wire, so that the servo motor cannot be controlled normally;

[0004] At the same time, because the controller is working, it will generate heat; if the heat is not dissipated in time, the working state and service life of the controller will be greatly reduced. Placed on the cooling plate, it is realized by ventilation under the cooling plate and heat transfer, but the effect of this method is not obvious

Images