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Motor control method

A motor control, motor technology, applied in control systems, motor control, AC motor acceleration/deceleration control, etc., can solve problems such as calculation error, vibration, and uneven motor operation.

Inactive Publication Date: 2011-03-30
TECO ELECTRIC AND MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Make the operation of the motor quite uneven, often causing vibration and other phenomena
[0004] Moreover, in the traditional control method, when the motor uses a fixed-point arithmetic unit, the decimal point in all calculation processes will be discarded, which will cause calculation errors

Method used

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Embodiment Construction

[0018] An embodiment is proposed below for detailed description, and the embodiment is only used as an example for illustration, and does not limit the scope of protection of the present invention. In addition, unnecessary components are omitted in the drawings in the embodiments to clearly show the technical characteristics of the present invention.

[0019] Please refer to also refer to Figure 1 ~ Figure 4 . figure 1 Plot the displacement curve of the motor, figure 2 Plot the speed curve of the motor, image 3 Plot the acceleration curve of the motor, Figure 4 Plot the jerk curve of the motor. Wherein, the displacement curve X of the motor is the integral of the velocity curve V of the motor, the velocity curve V of the motor is the integral of the acceleration curve A of the motor, and the acceleration curve A of the motor is the integral of the jerk curve J of the motor. Conversely, the jerk curve J of the motor is the differential of the acceleration curve A of th...

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Abstract

The invention discloses a motor control method, which comprises the following steps: in an acceleration time interval, increasing the rotation speed of the motor to the maximum rotation speed value according to a first speed curve; in a constant speed time interval, keeping the rotation speed at the maximum rotation speed value; and in a reduction time interval, reducing the rotation speed to zero according to a second speed curve. The coincidence of the corresponding time points of the first speed curve and the second speed curve is associated with the maximum rotation speed value. The method further allows a user to set the time point of the change of the acceleration flexibly without influencing the smoothness of the operation of the motor and mechanisms connected with the motor.

Description

technical field [0001] The present invention relates to a motor control method, and in particular to a motor control method using a speed curve as a control instruction. Background technique [0002] The invention of the motor led to the outbreak of the global industrial revolution. Taking an electric motor as an example, an electric motor converts electrical energy into mechanical energy, and then uses the mechanical energy to generate kinetic energy, which is used to drive electrical equipment in other devices. [0003] In the control of motor operation, parameters such as motor speed and displacement are the basic control parameters. However, in conventional motor control systems, the motor must be accelerated rapidly to achieve the target speed. When the motor is close to the target displacement, it must decelerate rapidly. Makes the operation of the motor quite uneven, often causing vibration and other phenomena. [0004] Moreover, in the traditional control method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/00H02P23/20
Inventor 张哲明
Owner TECO ELECTRIC AND MACHINERY
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