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Method for remote adjusting of speeds of multiple direct current brushless motors

A brushless DC motor, long-distance technology, applied in the direction of multiple motor speed/torque control, etc., can solve the problems of increasing control lines and poor anti-interference ability.

Inactive Publication Date: 2015-10-28
HUNAN UNIV OF TECH
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  • Abstract
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  • 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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  • Method for remote adjusting of speeds of multiple direct current brushless motors
  • Method for remote adjusting of speeds of multiple direct current brushless motors
  • Method for remote adjusting of speeds of multiple direct current brushless motors

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Embodiment Construction

[0077] 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.

[0078] The device realizing the method of the present invention consists of a rectification control unit and m composed of a speed regulating unit, m is an integer greater than or equal to 2. The structure block diagram of the device system with 3 speed adjustment units is as follows: figure 1 As shown, 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 1-3# speed adjustment units all input the controllable rectification voltage from the first controllable rectification input terminal AC1 and the second controllable rectif...

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Abstract

Provided is a method for remote adjusting of speeds of multiple direct current brushless motors. The method is achieved through a device composed of a rectification control unit and a plurality of speed adjusting units. The rectification control unit inputs a single-phase 220V alternating current power supply, and outputs a controllable rectification voltage after voltage reduction of a transformer. A speed control signal containing a motor operating direction and an operating speed grade is sent in the controllable rectification voltage. The speed control signal comprises a guiding wave composed of a rectification wave of a plurality of power frequency cycles and an alternating current wave of one power frequency cycle, and a data wave composed of a plurality of power frequency cycles. Each speed adjusting unit inputs the controllable rectification voltage containing the speed control signal, and controls a speed of a direct current brushless motor. In the method, a remote controller is not needed, individual laying of control lines is not needed, a speed is controlled directly by utilization of a transmission speed of a single-phase power supply line, and control and adjusting of speeds of multiple direct current brushless motors can be achieved.

Description

technical field [0001] The invention relates to a motor speed regulation technology, in particular to a method for remotely regulating the speed of multiple DC brushless motors. 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 b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/04
Inventor 凌云周维龙王兵袁川来曾红兵聂辉
Owner HUNAN UNIV OF TECH
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