Control method for correcting stepper motor and its related device

A technology of stepping motors and control methods, applied in the direction of control using feedback, control systems, motor generator control, etc., can solve problems such as poor execution efficiency, errors, and deviation from the target track

Inactive Publication Date: 2004-02-18
TIAN HLDG LLC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when the stepper motor 18 is working, its step angle may cause errors due to factors such as its own circuit structure, that is, when the read-write head is used for tracking, it will deviate from the target track greatly, so the read-write head needs to be repeated. Tracking operation, in other words, the optical disc drive will cause its execution efficiency to be poor due to the influence of the stepping motor 18
Similarly, any control system using a stepping motor will affect the movement of the corresponding load unit due to the step angle error of the stepping motor 18

Method used

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  • Control method for correcting stepper motor and its related device
  • Control method for correcting stepper motor and its related device
  • Control method for correcting stepper motor and its related device

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Embodiment Construction

[0019] please participate figure 2 , figure 2 It is a functional block diagram of the stepping motor control system 30 of the present invention. The stepper motor control system 30 includes a control circuit 32 , a stepper motor 34 , and a load device 36 . The control circuit 32 is used to control the operation of the stepping motor 34 to drive the corresponding load device 36 . For example, if the stepping motor control system 30 is applied to an optical disc drive, the loading device 36 is a read / write head for accessing an optical disc, and if the stepping motor control system 30 is applied to a scanner (scanner ), the loading device 36 is a scanning module for scanning a document. In this embodiment, the control circuit 32 includes a control device 38 , a driving device 40 , a tracking device 42 , and a computing device 44 . The control device 38 uses a control parameter to output a control signal to the driving device 40, and then the driving device 40 drives the lo...

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Abstract

A control method for calibrating step motor connected to a controller and a load device includes outputting a control signal from controller to step motor according to a target displacement and a reference parameter, driving the load device, generating the second reference parameter according to the actual displacement, the first reference parameter, and the difference between actual and target displacements, and updating the first reference parameter.

Description

technical field [0001] The present invention provides a method and device for controlling a stepping motor, in particular a method for calibrating a stepping motor and related devices. Background technique [0002] Because of its very simple control mechanism, stepping motors have been widely used in various control systems to control the speed, displacement, and direction of a loading device. Stepper motors do not contain brushes, which drive the rotation of the rotor through the constant switching of the magnetic field of the poles on the stator. Therefore, the difference between a stepper motor and a general motor is that when the step The stepper motor does not rotate periodically when it inputs the power supply, that is, the stepper motor is a motor-mechanical device controlled by a digital signal. Whenever a digital pulse signal is input, the stepper motor will rotate a fixed Angle, also known as stepping angle (stepping angle). Since the stepping motor can directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12H02P8/00
Inventor 湛一中李智豪林仲翬
Owner TIAN HLDG LLC
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