Stepless speed regulation device for controlling direct-current motor for aviation industry

Abstract

The invention relates to a stepless speed regulation device for controlling a direct-current motor for the aviation industry. A given integrator, a speed regulator, a current regulator, a trigger pulse generator and a silicon controlled rectifier are connected sequentially. The input end of a current regenerative feedback circuit is connected with the output end of the silicon controlled rectifier, and the output end is connected with the input end of the current regulator. A speed measurement feedback circuit for measuring the rotation speed of the motor is connected with the input end of the speed regulator. The device has the advantages that good starting, breaking, rotation and counter rotation and speed regulation performances are provided; large-range stepless speed regulation can be performed on the motor by changing the input voltage or exciting current of the motor simply, and accordingly, the motor rotation speed is stable, and arcs and electric sparks are avoided; the device is simple in structure, convenient to operate, small in own consumed power, low in operation cost and capable of being used in various complex environments.

Description

technical field [0001] The invention belongs to a DC speed regulating device, which is suitable for use in the field of numerically controlled machine tools, in particular to a device for steplessly speed regulating the spindle of the machine tool and the like. Background technique [0002] The DC speed control device is a typical device in the application of CNC machine tools. With the rapid development of AC frequency conversion speed regulation technology, although the pattern of DC speed regulation has been broken, but because of its good starting, braking, forward and reverse and speed regulation performance, it is currently used in CNC machine tools in the aviation industry. It still occupies a certain position in the field of speed regulation, especially in some occasions that require high precision and rapidity. [0003] The existing DC speed control system has a wide variety of structures, the drive circuit is complex, and the power consumed by the drive itself is ...

AI Technical Summary

Problems solved by technology

[0003] The existing DC speed control system has a wide variety of structures, the drive circuit is complex, and the power consumed by the drive itself is large. However, the silicon controlled rectifier DC speed control device has good static characteristics, such as high blocking voltage, small leakage current, and low conductivity. Small voltage drop, large current capacity, strong overload capacity, etc.; at the same time, it has good switching characteristics, so it is favored in DC speed control systems

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