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Method and device for controlling d.c. motor

A DC motor and control signal technology, applied in the direction of motor speed or torque control, general control system, program control, etc., can solve problems such as power consumption

Inactive Publication Date: 2004-05-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, during the driving process of the DC motor, if the object of the motor does not reach the target position due to external disturbance, since the duty cycle of the PWM signal is continuously increased to change or try to change the position of the driven object, a large amount of power is consumed

Method used

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  • Method and device for controlling d.c. motor
  • Method and device for controlling d.c. motor
  • Method and device for controlling d.c. motor

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Embodiment Construction

[0016] Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like components throughout. The embodiments are described below in order to clarify the present invention by referring to these figures.

[0017] figure 1 It is a flow chart of controlling a DC motor according to an embodiment of the present invention. The method includes operations 10 to 16 for obtaining the difference between the reference speed and the current speed when the position of the object does not reach the target position and the first interruption occurs; and operations 18 and 20 for obtaining the difference between the reference speed and the current speed; When the error limit value is set, the user is notified that an error has occurred.

[0018] More specifically, at operation 10, the location of the object is initialized. After operation 10, in operation 12...

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Abstract

Controlling a direct current motor driving an object by determining, if the object does not reach a target position, a reference velocity corresponding to a point of time from a predetermined velocity trajectory, obtaining a position of the object, calculating a current velocity of the object, and calculating a difference between the reference velocity and the current velocity. If the calculated difference is greater than a velocity error limit value, informing a user that an error has occurred.

Description

[0001] This application claims priority to Korean Patent Application No. 2002-39153 filed with the Korean Intellectual Property Office on July 6, 2002, the disclosure of which is incorporated herein by reference in its entirety. technical field [0002] The present invention relates to a direct current (DC) motor, and more particularly, to a method and apparatus for controlling an object driven by a DC motor. Background technique [0003] Ink-jet printers or multi-function peripherals usually use DC motors or stepping motors to drive a carrier with a head as a driving object. In particular, when the carrier is driven by a DC motor, disturbances may be caused in the carrier due to users or other external factors. In this case, even if the disturbance is very serious, the conventional motor control method cannot stop the motor in operation and cannot notify the user of the situation. In other words, conventional motor control methods continue to increase the duty cycle of a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/16G05B19/4062
CPCG05B19/4062G05B2219/41329G05B2219/42306G05B2219/42307H02P6/16
Inventor 丁永道
Owner SAMSUNG ELECTRONICS CO LTD