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Digital control PU plate

A PU board and switch unit technology, applied in digital control, electrical program control, etc., can solve the problems of high purchase rate, high user cost, and low maintainability, so as to reduce cost, improve reliability and service life, and facilitate The effect of diagnostic maintenance

Inactive Publication Date: 2010-02-03
WUXI XITE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing air-jet looms, the PU products that control the electromagnetic clutch adopt the analog control method, which has the disadvantages of extremely high damage rate, low maintainability, and high purchase rate, so the user cost is greatly increased

Method used

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Embodiment Construction

[0015] Such as figure 1 As shown, the present invention is composed of three relatively independent high-voltage output units, that is, the A-channel output, the B-channel output and the C-channel output. The present invention includes following modules:

[0016] 1. The high-voltage input filter module is used to filter the DC high-voltage power supply.

[0017] 2. The control power supply filter and conversion module is used to filter the +24VDC power supply and generate the +15V and +5V power supplies required by the control circuit.

[0018] 3. Switching unit A, switching unit B and switching unit C are composed of MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) to complete the on / off control of the three channels A, B, and C of the DC high-voltage power supply.

[0019] 4. A-way control isolation drive module, B-way control isolation drive module and C-way control isolation drive module are used to bootstrap and isolate the MOSFET control signals of switch u...

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Abstract

The invention relates to a digital control PU plate for an air-jet loom, comprising a high-pressure input filter module, a control power filter and conversion module, a switch unit A, a switch unit B,a switch unit C, a circuit A control isolation driving module, a circuit B control isolation driving module, a circuit C control isolation driving module, a control signal input isolation driving module, a circuit A overcurrent sample module, a circuit B overcurrent sample module, a circuit C overcurrent sample module and a digital control processing unit module; the digital control processing unit module decides whether to start the corresponding MOSFET and a start time based on the switch control signals and overcurrent signals of the switch units of A, B and C. The invention adopts the digital control processing unit module, can automatically regulate the restart time of the MOSFET based on the overcurrent indication signal of output unit accurately and swiftly, greatly improves the reliability and service time of PU products and has the advantages of convenient diagnosis and maintenance and lower cost.

Description

(1) Technical field [0001] The invention relates to an automatic control product for the textile machinery industry, in particular to a digital control PU (Power Unit, power unit) board for an air-jet loom. (2) Background technology [0002] The start / brake mechanism of the air-jet loom usually adopts a disc type electromagnetic clutch brake. The electrification and de-energization of the electromagnetic clutch makes the electromagnetic attraction and friction force generate and disappear, so as to realize the start, stop and brake of the loom. The rapid, powerful, stable and reliable start / brake mechanism is an important auxiliary device for high-speed looms. Starting and braking are interrelated actions. Both starting and braking should be done quickly, and should be braked according to the positioning requirements of the loom. Positioning braking provides conditions for smooth start of weft insertion and beating-up, and is an important prerequisite for weaving high-qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/18
Inventor 张美成
Owner WUXI XITE TECH