A Method of Quantitatively Analyzing the Starting Ability of Stepping Motor

Abstract

The invention discloses a method for quantitatively analyzing the starting capability of a stepping motor, comprising: (1) testing the maximum static starting torque of the stepping motor at different starting frequencies, and drawing the static torque-frequency characteristic curve of the motor; (2) The stepper motor rotor is affected by the initial speed and initial position when it is dynamically started, which is equivalent to the initial speed equivalent load torque T L1 and initial position equivalent load torque T L2 ; (3) According to the actual initial running state of the stepper motor and the actual load torque T L , and further obtain the total equivalent static load at each initial speed and initial position when dynamic starting; (4) compare the total equivalent static load with the maximum static starting torque at a specific starting frequency, and judge that the stepper motor is at Whether it can start normally at this starting frequency. With the invention, the initial speed and the initial position can be equivalent to the equivalent load torque, so that the dynamic starting performance of the stepping motor can be analyzed by using the static torque-frequency characteristic.

Description

technical field [0001] The invention belongs to the field of stepping motors, in particular to a method for quantitatively analyzing the starting ability of a stepping motor. Background technique [0002] Stepper motor is an open-loop control motor that converts electrical pulse signals into angular displacement or linear displacement. It is the main executive element in modern digital program control systems and one of the key products of mechatronics. It is widely used in various automation controls system. [0003] If the stepper motor is not properly controlled, it will cause a step-out problem. The pulse frequency of the stepper motor is not selected properly, the load is too large, and the power switch tube switch is wrong. In terms of starting, the starting ability of the stepper motor is also closely related to the size of the load and the pulse frequency. Previous studies mainly focused on the qualitative analysis of the starting ability of the stepper motor and t...

AI Technical Summary

Problems solved by technology

However, there are few studies on quantitative analysis and dynamic starting ability.

[0004] The Chinese patent document whose publication number is CN108667363A discloses a control method and device for the motion of a stepper motor, which judges whether the stepper motor can be started by calculating the load torque of the stepper motor under no-load and load conditions. The judgment method mainly considers the influence of the load torque, which is used to analyze the starting ability of the stepper motor when it starts from a static state, but does not consider the influence of the initial speed and initial position of the stepper motor when it is dynamically started

[0005] At present, there are few quantitative analysis methods for the cause of stepping motor out-of-step, and they basically start from the perspective of refined modeling, which requires complex modeling and simulation of the stepping motor system

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