Integrated color blending control technology for the driving and detection of seamless underwear machine

doi:10.19398/j.att.202011021

Abstract

Abstract:

In view of the problems in the color blending and knitting process of the seamless underwear machine, such as the instability of actions like yarn addition, yarn cutting, and yarn change, due to the implementation of drive open-loop control and uncontrollable time delay, the color blending principle and drive control characteristic of underwear production are deeply analyzed. For the purpose of improving the control stability of color blending and knitting, a color blending control technology scheme that integrates the drive and fault detection of seamless underwear machine is proposed. According to the driving characteristics and characteristics of loop current, key hardware circuits and software programs are designed. The test results show that the proposed scheme is stable and reliable, with low power consumption, high working efficiency and effective judgment of fault information. So it can meet the color blending control requirements of seamless underwear machine.

Key words: seamless underwear machine, characteristic analysis, pulse width modulation, current detection

摘要：

针对无缝内衣机在调色编织过程中由于执行驱动开环控制,时延不可控导致添纱、剪纱、换纱等动作不稳定的问题,深入分析内衣生产的调色工艺原理及驱动控制特性。以提高调色编织工艺控制稳定性为目的,提出一种无缝内衣机驱动与故障检测一体化的调色控制技术方案,根据驱动特性与回路电流特性,设计关键硬件电路与软件程序。测试结果表明,该方案稳定可靠、低功耗、工作效率高、能有效对故障信息进行判定,满足无缝内衣机调色控制要求。

关键词: 无缝内衣机, 特性分析, 脉冲宽度调制, 电流检测

CLC Number:

TS103.7

SHI Weimin, PENG Laihu. Integrated color blending control technology for the driving and detection of seamless underwear machine[J]. Advanced Textile Technology, 2022, 30(1): 115-121.

姚杰森, 史伟民, 彭来湖. 无缝内衣机驱检一体化调色控制技术[J]. 现代纺织技术, 2022, 30(1): 115-121.

Figures/Tables 14

Fig.1 Shuttle working point

Fig.2 Ingenious drawing of multi-color fabric structure

Fig.3 Schematic diagram of hysteresis characteristics of solenoid valve

Fig.4 Coil equivalent circuit model

Fig.5 Solenoid valve coil opening current waveform

Fig.6 Overall design scheme structure

Fig.7 Block diagram of toning control unit

Fig.8 Shuttle solenoid valve control circuit

Fig.9 Solenoid valve drive task software process

Fig.10 Coil current detection task program flow

Fig.11 Experiment platform

Tab.1 Driving conditions under different PWM outputs

测试项	高位保持时间/ms	PWM频率/Hz	PWM占空比/%	驱动效果
1	100	500	60	异常
2	5	1000	60	正常
3	2.5	2000	30	异常
4	2.5	2000	60	正常
5	2.5	2000	90	微热
6	1	5000	60	正常

Fig.12 Response time measurement

Fig.13 Testing on the spot

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