Permanent magnet type stepping motor subdivision driving method

A stepping motor and subdivision drive technology, which is applied in the direction of motor generator control, electrical components, control systems, etc., can solve the problems of increasing system performance requirements and limitations, and achieve the effect of reducing torque disturbance and lowering performance requirements

Active Publication Date: 2021-10-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The torque disturbance generated by the load when the stepper motor is running is mostly improved by increasing the number of subdivisions, and the same subdivision number is used for the motor startup and acceleration phases to run, thus limiting the selection of subdivision numbers and increasing system performance requirements

Method used

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  • Permanent magnet type stepping motor subdivision driving method
  • Permanent magnet type stepping motor subdivision driving method
  • Permanent magnet type stepping motor subdivision driving method

Examples

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Embodiment Construction

[0028] In this example, a permanent magnet type stepper motor drive method is applied in the drive system of the permanent magnet type stepper motor, and includes the following steps:

[0029] Step 1. Set the maximum speed Vmax and acceleration a of the stepping motor, and meet the requirements: Accelerate the stepping motor with the acceleration a, and the motor speed achieved when the total stroke runs 1 / 2 is greater than the set maximum speed of the stepping motor Vmax;

[0030] In actual engineering, the motion angle of the load is arbitrary, no matter how the stepping motor moves, the driving algorithm should work. The top speed of a stepper motor is less than what can be achieved in 1 / 2 of the total travel angle. Then if the motion is long enough, the stepper motor must stop accelerating and run at top speed until it needs to slow down.

[0031] Let the natural frequency of the driving system be Fmin, the interrupt service frequency of the processor in the driving syst...

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Abstract

The invention discloses a permanent magnet type stepping motor subdivision driving method, which comprises the following steps that 1, according to a stroke, a maximum speed, an acceleration speed and system parameters, a step number N1 and an acceleration stroke D1 required for accelerating the stepping motor to the maximum speed and the upper and lower limits of a driving command clock period of the stepping motor are calculated according to a trapezoidal acceleration and deceleration model; 2, subdivision driving is carried out on the starting stage and the stopping stage of the stepping motor in an operation mode of keeping the same time interval; 3, subdivision driving is conducted in the acceleration stage and the deceleration stage in the operation mode of keeping the same angle interval; 4, the subdivision number of the stepping motor in the acceleration stage is gradually reduced, and the subdivision number of the stepping motor in the deceleration stage is gradually increased. The torque disturbance of the stepping motor to the load system at the starting, accelerating, decelerating and stopping stages can be reduced under the condition that the performance requirement of the motor driving system is relatively low, so that the permanent magnet type stepping motor can be more widely applied to various high-precision system control scenes.

Description

technical field [0001] The invention belongs to the field of motor control, in particular to an improved subdivision driving method of a permanent magnet stepping motor. Background technique [0002] A stepper motor is an actuator that converts electrical pulses into angular displacement. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed step angle in the set direction, and its rotation runs step by step at a fixed angle. With the rapid development of aerospace technology, stepper motors occupy a place in the aerospace field based on their unique advantages. The permanent magnet stepping motor has the advantages of low price, simple structure, good dynamic performance, and large output torque, but its step angle is large, and the control accuracy is low. When running at high speed, it will generate torque disturbance on the small satellite platform. [0003] Subdivision control can improve the running performance of the motor, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P8/24H02P8/04H02P8/22
CPCH02P8/24H02P8/04H02P8/22Y02P80/10
Inventor 吴洋汪文韬王羿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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