Quick-response stepping motor pole speed drive system and method

Abstract

The invention relates to a quick-response stepping motor pole speed drive system and method. A stepping motor is connected to an incremental encoder through a synchronous rotation mechanism, and the incremental encoder is connected with a controller. When the stepping motor rotates one step angle, the incremental encoder feeds back one or more signals to the controller correspondingly, and the controller takes the feedback signal as a signal that the stepping motor rotates a next step angle. Because the encoder is high in speed of feeding back the signal, the motor nearly can receive feedback signals of a plurality of encoders at the same time after the motor rotates one step angle, thereby driving the next step angle. The method can enable the stepping motor not to lose a step during high-frequency operation, greatly reduces the transmission error of the industrial control field, improves the utilization rate of the stepping motor, guarantees the control precision, enlarges the control range of the rotating speed of the motor, is quick in response speed, facilitates the precise positioning, can be widely used in the numerical control machining, and effectively improves the machining precision.

Description

technical field [0001] The invention relates to a stepping motor driving system, in particular to a stepping motor extreme speed driving system and method. Background technique [0002] Working principle of stepper motor: stepper motor is an open-loop control motor that converts electrical pulse signals into angular displacement or linear displacement. The speed and stop position of the motor only depend on the frequency and number of pulses of the pulse signal. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle in the set direction, which is called "step distance". Angle", its rotation runs step by step at a fixed angle. The open-loop system composed of stepper motor and drive circuit has been widely used in the field of industrial control because of its simple structure and low price. Stepper motors are often used in precise positioning occasions, and it is very important to ensure that the motor does not lose steps. When...

AI Technical Summary

Problems solved by technology

When the stepper motor is working normally, it moves a step angle every time a control pulse is received. If the control pulse is continuously input, the motor will continue to rotate accordingly. However, when the pulse frequency sent by the controller is too high, the stepper motor will work Affected by the characteristics, there will be a step loss phenomenon, which will seriously affect the control accuracy

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