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Brushless direct current motor control method on the basis of dual-mode control

A technology of brush DC motor and control method, which is applied in the direction of excitation or armature current control, etc., and can solve the problems of low motor operation efficiency and easy damage of Hall sensor

Inactive Publication Date: 2016-06-01
KINGSHORE NEW RESOURCES ELECTRIC JIANGSU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the purpose of the present invention is to propose a control method for brushless DC motors based on dual-mode control in view of the problem that the Hall sensor of the existing brushless DC motors is easily damaged and the operating efficiency of the motor is low.

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  • Brushless direct current motor control method on the basis of dual-mode control

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Embodiment Construction

[0015] A dual-mode control-based brushless DC motor control method of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0016] join figure 1 Shown is the hardware structure diagram of the control system. The present invention adopts a dual-mode brushless DC motor control method, and controls the DC power supply, three-phase bridge inverter, brushless DC motor, position sensor and single-chip microcomputer. It is characterized in that: the brushless DC motor operates in two modes with a position sensor and without a position sensor and switches automatically. When the output signal of the position sensor is normal, the motor works in the mode with the position sensor; when the output signal of the position sensor is abnormal , the motor works in the position sensorless mode.

[0017] combine figure 1 , figure 2 and image 3 Describe the brushless DC motor control method based on dual-mode control of the presen...

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Abstract

The present invention discloses a brushless direct current motor control method on the basis of dual-mode control. Through control of a direct current power source, a three-phase bridge inverter, a brushless direct current motor, a position sensor and a single chip microcomputer, the brushless direct current motor may be automatically switched in two modes of having the position sensor and having no the position sensor; when the signal output of the position sensor is normal, the motor works in the mode of having the position sensor; and when the signal output of the position sensor is not normal, the motor works in the mode of having no the position sensor. The brushless direct current motor control method on the basis of dual-mode control is able to allow a brushless direct current motor to normally work in the condition that a position sensor is damaged.

Description

technical field [0001] The invention relates to a control method of a brushless direct current motor, in particular to a control method of a brushless direct current motor based on dual-mode control. Background technique [0002] Traditional brushless DC motor control requires an additional position sensor to provide the necessary commutation signal to the inverter bridge. Its existence brings a lot of defects and inconvenience to the application of brushless DC motor and increases the volume of the motor. and cost; under severe conditions such as high temperature and humidity, the reliability of motor operation will be reduced; even the magnetically sensitive voltage Hall sensor widely used now has a certain degree of magnetic insensitivity; the installation accuracy of the sensor will also affect the motor's performance. Running performance increases the difficulty of the production process. Contents of the invention [0003] The technical problem to be solved by the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/28
Inventor 朱冬宏
Owner KINGSHORE NEW RESOURCES ELECTRIC JIANGSU