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57 type stepping motor principle _ deceleration stepper motor design

by:Zhenyu     2020-11-03
Stepper motor is a kind of discrete movement of the electric drill speed reducer, it has the nature of the contact and the modern digital control technology. In the current domestic digital control system, stepping planetary gear motor is widely used. With the emergence of digital ac servo system, ac servo motors are increasingly used in the digital control system. In order to adapt to the development trend of digital control, motion control systems mostly adopt stepper planetary gear motor or all-digital ac servo motor as the executive motor. Although both similar on control mode ( Pulse sequence and direction signal) , but in the use of performance and applications on there is a big difference.

stepper motor at low speed is easy to appear low frequency vibration phenomenon. Vibration frequency is associated with load and drive performance, it is generally believed half frequency vibration frequency for the planetary gear motor no-load takeoff. This determined by the working principle of stepper motor in low frequency vibration phenomenon is very bad for the normal operation of the machine. When the stepper motor work in low speed, general damping technology should be adopted to overcome the low frequency vibration phenomenon, such as add damper on motor, or drive the segmentation technology, etc.

ac servo motor running smoothly, even in the low speed also won't appear when the vibration phenomenon. Ac servo system has a resonance suppression function, can cover the mechanical rigidity, and internal system has the function of frequency resolution and can detect the mechanical resonance point, is advantageous for the system adjustment.




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