Method and device for controlling stepper motor

A technology of stepping motors and control methods, applied in the direction of motor generator control, control systems, electrical components, etc., can solve the problems of low acceleration efficiency, inability to guarantee stepping motors, and inability to make full use of stepping motors

Inactive Publication Date: 2018-06-22
MACCURA MEDICAL INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a stepping motor control method and device to solve the problem in the prior art that the output torque of the stepping motor cannot be fully utilized. During the accelerat

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  • Method and device for controlling stepper motor
  • Method and device for controlling stepper motor
  • Method and device for controlling stepper motor

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Embodiment Construction

[0099]In order to solve the problem that the output torque of the stepper motor cannot be fully utilized in the prior art, it takes a long time to reach the maximum speed during the acceleration process, the acceleration efficiency is low, and it is impossible to ensure that the stepper motor does not run at high speed. To solve the problem of out-of-step, a new stepping motor control method and device are provided in the embodiment of the present invention. The method is: substituting the characteristic parameters and system operating parameters of the stepping motor into the pre-established rotational speed-output torque mathematical model In, generate the rotational speed-output torque curve formula of described stepper motor, and based on described rotational speed-output torque curve formula, the moment of inertia of total load torque and load, generate the rotational speed-acceleration curve of described stepper motor; The rotational speed-acceleration curve generates a c...

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Abstract

The invention relates to the technical field of in vitro diagnosis, in particular to a method and device for controlling a stepper motor. The method comprises the steps of substituting characteristicparameters and system operation parameters of the stepper motor into a pre-established rotating speed-output torque mathematical model, generating a rotating speed-output torque curve formula of the stepper motor and generating a rotating speed-acceleration curve of the stepper motor on the basis of the rotating speed-output torque curve formula, total load torque and rotational inertia of load; generating corresponding time-rotating speed curves on the basis of the rotating speed-acceleration curve and discretizing the time-rotating speed curves to generate corresponding control signals, wherein the control signals are pulse frequencies corresponding to various time points on the timeline after the time-rotating speed curve is discretized; and controlling the stepper motor on the basis ofthe control signals. By adopting the method, the out-of-step phenomenon of the stepper motor during high-speed operation is avoided while the acceleration efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of in vitro diagnosis, in particular to a stepping motor control method and device. Background technique [0002] As an actuator, the stepper motor is one of the key products of mechatronics, and is widely used in various automation control systems. With the development of microelectronics and computer technology, the demand for stepper motors is increasing day by day, and they are used in various national economic fields. During the operation of the stepper motor, it is necessary to avoid the occurrence of out-of-step phenomenon and realize the precise control of the stepper motor. During the operation of the stepper motor, it is necessary to ensure that the output torque of the stepper motor at the current speed is greater than the load torque at all times. It is the only condition to avoid stepping motor out of step. The so-called out-of-step means that the number of steps that the stepper motor runs du...

Claims

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Application Information

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IPC IPC(8): H02P8/14
CPCH02P8/14
Inventor 张建恒
Owner MACCURA MEDICAL INSTR CO LTD
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