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A method for long-distance speed regulation of DC brushless motor

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

Inactive Publication Date: 2017-05-17
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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  • A method for long-distance speed regulation of DC brushless motor
  • A method for long-distance speed regulation of DC brushless motor
  • A method for long-distance speed regulation of DC brushless motor

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Embodiment Construction

[0071] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, but the embodiments of the present invention are not limited thereto.

[0072] The structure block diagram of the device system for implementing the method of the present invention is as follows figure 1 As shown, it consists of a rectification control unit and a speed adjustment unit. The rectification control unit inputs a single-phase 220V AC power supply from the phase line input terminal L and the neutral line input terminal N, and outputs a controllable rectification voltage from the first controllable rectification output terminal AC1 and the second controllable rectification output terminal AC2. The speed adjustment unit inputs a controllable rectification voltage from the first controllable rectification input terminal AC1 and the second controllable rectification input terminal AC2 and controls the speed of the DC brushless motor.

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Abstract

A method for long-distance speed regulation of a DC brushless motor is disclosed. The method is realized by an apparatus formed by a rectification control unit and a speed regulation unit. The rectification control unit inputs single-phase 220V AC power, outputs controllable rectified voltage after pressure reduction by a transformer, and speed control signals containing motor operation direction and operation speed level are sent in the controllable rectified voltage. The speed control signals comprise guiding waves including multiple power frequency period rectified waves and one power frequency period AC wave and data waves formed by multiple power frequency periods. The speed regulation unit inputs controllable rectified voltage containing speed control signals, and controls the speed of the DC brushless motor. No remote controller is not needed, and no control lines have to laid individually. Speed control signals can be directly transmitted through a single-phase power line, long-distance controlling and adjusting the speed of the DC brushless motor can be realized.

Description

Technical field [0001] The invention relates to a motor speed regulation technology, in particular to a method for remote speed regulation of a DC brushless motor. Background technique [0002] When you need to remotely control and adjust the speed of a 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 receiver. The brushless DC motor can be adjusted steplessly or steplessly through the remote control. The disadvantage is that it needs to be equipped with a remote control, which is troublesome to manage. Easy to lose. [0004] The second is to adopt digital control technology. For example, the RS-485 bus is used to control the speed of a DC brushless motor. This solution has advanced technology but high cost. In addition to laying power lines, the system also needs a digital control bus. [0005] The third is to use analog signal control technology. For example, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/08
Inventor 凌云曾红兵肖会芹陈刚孔玲爽文定都
Owner HUNAN UNIV OF TECH