无缝内衣机分布式气阀组驱动控制单元设计

纺织学报 ›› 2016, Vol. 37 ›› Issue (10): 125-129.

无缝内衣机分布式气阀组驱动控制单元设计

收稿日期:2015-09-09 修回日期:2016-03-25 出版日期:2016-10-15 发布日期:2016-10-31

Distributed drive control unit design of air valve group on underwear machine

Received:2015-09-09 Revised:2016-03-25 Online:2016-10-15 Published:2016-10-31

摘要/Abstract

摘要：

针对内衣机气阀驱动路数繁多、空间布局分散的特点，归纳分析不同空间位置气阀的功能和性能要求，提出一种基于ＲＳ４８５总线通信的分布式驱动控制设计方案。根据控制单元分布式结构，构建了总体设计架构，论述了驱动控制单元硬件电路设计与软件开发，并根据控制指令传输需求，拟定了通信协议。为降低气阀功耗，提高动作准确率，驱动方式采取脉冲宽度调制（ＰＷＭ）保持的方式，通过深入研究ＰＷＭ各参数对通过气阀线圈电流的影响，在不同频率值和占空比下测量气阀线圈电流，结合实际打动情况选择最合适的参数。测试结果表明，该方案稳定可靠，气阀工作效率高，满足无缝内衣机的控制要求。

关键词: 无缝内衣机, 气阀, 分布式驱动控制, 频率, 占空比

Abstract:

The air valves of underwear machine are various and scattered. After analyzing and classifying the function and performance requirement of the valves in different location, a kind of distributed drive suggestion based on RS485 bus is put forward. According to distributed structure of control unit, total design framework is built and the article introduce the hardware circuit design, the software development and communication protocol which is formulated on the basis of control commands transmission requirements are discussed. In order to reduce the power and enhance the operating accuracy, pulse width modulation (PWM) mode is used as the drive mode. The current in different parameters (frequency and drty cycle) is measured, and in combination with the real movement, the most suitable parameters are selected. The results indicated that the solution and reliable, and the valve gas work efficiently, satisfying the control demand on the seamless underwear machine.

Key words: seamless under wear machine, air valev, destribution drive control, frequency, duty cycle

彭来湖万中魁胡旭东向忠杨亮亮. 无缝内衣机分布式气阀组驱动控制单元设计[J]. 纺织学报, 2016, 37(10): 125-129.

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