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DC brush motor drive controller for electric mechanism

A technology of DC brush motor and drive controller, applied in the direction of DC motor rotation control, etc., can solve the problems of large size of H-bridge module, complicated principle, limited use of H-bridge module, etc., achieving a small number of chips, simple logic judgment, Design flexible effects

Active Publication Date: 2019-01-15
BEIJING POWER MACHINERY INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the H-bridge module is large in size and its principle is relatively complicated. When the structural space requirements are strict, the use of the H-bridge module is greatly restricted.

Method used

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  • DC brush motor drive controller for electric mechanism

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Embodiment Construction

[0020] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The design idea of ​​the present invention is: the original H-bridge circuit needs to control the four-way power device switch through two-way logic signals, so as to form a forward drive loop and a reverse drive loop on the DC brushed motor, that is, to complete the DC brushed motor. Forward and reverse. In principle, the brushed DC motor current has only two power current flow directions, so it only needs to be able to control the two currents to complete the forward and reverse rotation of the brushed DC motor. Therefore, the power devices can be reduced to two circuits, and the corresponding logic signals only need two circuits. Designing with this idea can reduce the volume in principle.

[0022] See the ...

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Abstract

The invention discloses a DC brushless motor driving controller for an electric mechanism, belonging to the technical field of electronic circuits. The invention is designed based on the analysis of the structure and the working principle of the DC brushless motor, and has the advantages in the volume, the power device is reduced from the original four power switch transistors to two, and the space volume occupancy is reduced by more than 30% compared with the existing modules; The invention has wide applicability, can change device arrangement mode according to requirement, and is more flexible in design. As that parameter of the invention are adjustable, the power adaptation can be chan by replacing fewer components accord to different power requirements in engineering application; Compared with the logic judgment circuit required by the existing H-bridge module, the logic judgment circuit design of the invention is simpler, and the number of chips used is less.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a DC brushed motor drive controller for an electric mechanism. Background technique [0002] The electric mechanism mainly provides shaft work for electric valves such as ball valves. With the upgrading of aero-engine control systems, electric valves have received more and more attention because of their advantages such as convenient energy transmission, flexible installation positions, and fast response. Its position command is given by electrical signal, which is easy to maintain, has high energy utilization rate, can quickly and accurately give position feedback signal, and is convenient for installation and testing. [0003] The usual DC brushed motor drive method adopts H-bridge drive, which can drive the DC brushed motor to rotate forward, reverse, and stop, and has good performance in terms of reliability and power. However, the H-bridge module is...

Claims

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Application Information

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IPC IPC(8): H02P7/03
CPCH02P7/05
Inventor 徐航甘新鹏赵生超赵路明
Owner BEIJING POWER MACHINERY INST
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