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Control circuit for intermittent cycle operation of three-phase asynchronous motor

A three-phase asynchronous, cyclic operation technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve problems such as inaccuracy, complex operation, and difficult maintenance.

Inactive Publication Date: 2018-02-09
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous advancement of science and technology, and the rapid development of power electronics technology, computer technology, and automatic control technology, the traditional way of manually controlling DC motors is complicated, imprecise, laborious, low in efficiency, waste of resources, and difficult to maintain. And many other reasons, gradually replaced by automatic control equipment

Method used

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  • Control circuit for intermittent cycle operation of three-phase asynchronous motor

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Embodiment Construction

[0013] Such as figure 1 As shown in the control circuit of the three-phase asynchronous motor of the present invention, the square wave generator U7 of the NE555 model is connected with the ones counter U3 through the square wave output terminal VO, and the ones output terminal QA of the ones counter U3, QB is connected to the NAND gate module U5, and the NAND gate module U5 is also connected to the tens counter U4 and the JK flip-flop U6 respectively. A 43-ary counter is formed by the units counter U3 and the tens counter U4. Among them, the tens counter U4 is connected to the AND gate module U5 through the output terminal QC, and the clearing terminals RO1 and RO2 of the ones counter U3 and the tens counter U4 respectively pass the output terminal Y2 of the NAND gate module U5 and the JK trigger U6 connection. The ones counter U3 is also connected to the first decoder U1, and the tens counter U4 is also connected to the second decoder U2. The first decoder U1 and the seco...

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Abstract

The invention relates to a control circuit for the intermittent cycle operation of a three-phase asynchronous motor. A square wave generator is connected to a NAND gate module through a units-digit counter, and the NAND gate module is further connected to a tens-digit counter and a JK trigger. The units-digit counter is connected with a first decoder. The tens-digit counter is connected with a second decoder. The JK trigger is connected with a three-phase AC solid-state relay through a DC relay connected with a triode. The three-phase AC solid-state relay is connected with a three-phase AC motor. According to the control circuit for the intermittent cycle operation of a three-phase asynchronous motor, the square wave generator generates a pulse signal to drive the two counters to count, the decoders display the rotation time of the motor on a nixie tube module, and high and low levels transmitted by the NAND gate module drive the JK trigger, thereby enabling the time control of the intermittent cycle operation of the motor.

Description

technical field [0001] The invention relates to a circuit structure, in particular to a control circuit for a three-phase asynchronous motor running at intervals. Background technique [0002] With the continuous advancement of science and technology, and the rapid development of power electronics technology, computer technology, and automatic control technology, the traditional way of manually controlling DC motors is complicated, imprecise, laborious, low in efficiency, waste of resources, and difficult to maintain. And many other reasons, gradually replaced by automatic control equipment. These technologies have the advantages of low cost, easy maintenance, high work efficiency and high precision. The motor controlled by the digital circuit can realize the transformation from the traditional electric drive technology to the automatic control of the AC drive, and it is recognized as a promising way of speed regulation and time control. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 文彪明立娟
Owner PANZHIHUA UNIV
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