Remote speed regulation device of direct current brushless motor

A technology of brushless DC motor and speed control device, which is applied in the direction of speed/torque control of a single motor, and can solve problems such as poor anti-interference ability and increased control lines

Inactive Publication Date: 2015-11-25
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method also needs to increase the control line, and the anti-interference ability is poor

Method used

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  • Remote speed regulation device of direct current brushless motor
  • Remote speed regulation device of direct current brushless motor
  • Remote speed regulation device of direct current brushless motor

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Embodiment Construction

[0044] The present invention will be described in further detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0045] Realize the circuit system structural block diagram of the inventive method as figure 1As shown, it consists of rectification control unit and speed regulation unit. The rectification control unit receives single-phase 220V AC power from phase line input terminal L and neutral line input terminal N, and outputs controllable rectification voltage from the first controllable rectification output terminal AC1 and the second controllable rectification output terminal AC2. The speed adjustment unit inputs the controllable rectification voltage from the first controllable rectification input terminal AC1 and the second controllable rectification input terminal AC2 to control the speed of the brushless DC motor.

[0046] The structure of the rectifier control unit is as follows ...

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Abstract

A remote speed regulation device of a direct current brushless motor comprises a rectification control unit and a speed regulation unit, wherein the rectification control unit comprises a transformer, a control power supply module, a controlled rectification module, a zero-cross detection module, a singlechip control module, a trigger control module and a speed given module and is used for inputting a single-phase 220V alternating current power supply, outputting a controlled rectification voltage with an output voltage valid value less than 220V, and sending a speed control signal composed of a guide wave and a data wave in the controlled rectification voltage; and the speed regulation unit comprises a regulation power supply module, a waveform sampling module, a singlechip regulation module and a motor driving module and is used for controlling the speed of the direct current brushless motor according to the speed control signal in the controlled rectification voltage. In the device, a remote controller is not needed, a control line is unnecessarily and independently laid, a single-phase power line is directly used for transmitting the speed control signal, and remote control and regulation on the speed of the direct current brushless motor can be achieved.

Description

technical field [0001] The invention relates to a motor speed regulation technology, in particular to a long-distance speed regulation device for a DC brushless motor. Background technique [0002] When it is necessary to remotely control and adjust the speed of the brushless DC motor, the usual methods are: [0003] One is to use remote control. The drive control circuit of the brushless DC motor is equipped with a remote control receiving device, and the brushless DC motor can be adjusted in steps or steplessly through the remote control. The disadvantage is that it needs to be equipped with a remote control, which is troublesome to manage, and the remote control is easy lost. [0004] The second is the use of digital control technology. For example, the RS-485 bus is used to control the speed of the DC brushless motor. This solution is advanced in technology, but the cost is high. In addition to power lines, the system also needs to lay out digital control buses. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08
Inventor 凌云文定都王兵郭艳杰曾红兵陈刚
Owner HUNAN UNIV OF TECH
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