Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (12): 134-139.doi: 10.13475/j.fzxb.20180705606

• Machinery & Accessories • Previous Articles     Next Articles

Real-time motion control technology of knitting circular machine

DAI Ning, HU Xudong, PENG Laihu()   

  1. The Center for Engineering Technology of Modern Textile Machinery & Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2018-07-23 Revised:2019-09-16 Online:2019-12-15 Published:2019-12-18
  • Contact: PENG Laihu E-mail:laihup@zstu.edu.cn

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Abstract:

Aiming at problems of existing knitting circular machine, such as easy failure in the operation state switching, unstable speed control and low precision, a motion control design scheme for knitting circular machine based on advanced RISE machine(ARM ) processor was proposed. Combined with the characteristics of various motion states such as running, jogging, forced running and stopping of the knitting circular machine, the control mode and running characteristics of the variable frequency motor were summarized and analyzed. According to the motion control technology of the knitting circular machine, the overall design structure of the scheme was constructed. The key hardware circuit design and motion control algorithm were discussed, and software development was carried out. Three different working states were classified for the inching, running, stopping buttons to acquire the current state of motion required to knitting circular machine at the moment. Analog input was adopted for the variable frequency motor speed control, and pulse width modulation (PWM) was adopted to control the size of its analog input. In order to control the stability of the knitting circular machine's running speed, the voltage fluctuation of PWM analog input was studied at different frequency values, and the most suitable frequency value was selected according to the actual situation. The results indicate that this scheme has high real-time performance and stability, meeting the control requirements of the knitting circular machine.

Key words: knitting circular machine, motion control, hardware circuit, variable frequency motor

CLC Number: 

  • TS103.7

Fig.1

Mechanical structure diagram of knitting circular machine"

Fig.2

General structure diagram of motion control technology of knitting circular machine"

Fig.3

Circuit diagram of status detection"

Fig.4

Circuit diagram of motion control. (a) Control circuit of PWM; (b) Control circuit of enable signal"

Fig.5

Flow chart of status detection program"

Fig.6

Program flow chart of variable frequency motor speed control"

Fig.7

Waveform of PWM at low (a) and high (b) frequency"

Fig.8

Back-end waveform of converter control circuit. (a) Low frequency; (b) High frequency"

[1] 曹斌. 无缝针织内衣机成圈机构原理与工艺的研究与分析[D]. 杭州: 浙江理工大学, 2010: 2-22.
CAO Bin. Research and analysis on the looping principle and technology of the seamless underwear knitting machine[D]. Hangzhou: Zhejiang Sci-Tech University, 2010: 2-22.
[2] 张萍. 针织大圆机控制器的设计与实现[J]. 江南大学学报(自然科学版), 2011,10(6):1-2.
ZHANG Ping. Design and implementation of circular knitting machine controller[J]. Journal of Jiangnan University(Natural Science Edition), 2011,10(6):1-2.
[3] 黄翔, 顾维铀. 针织纬编大圆机的发展动态[D]. 纺织导报, 2008(12):60-62-64.
HUANG Xiang, GU Weiyou. The development trend of circular knitting machine[J]. China Textile Leader, 2008(12):60-62-64.
[4] 郑胜家. 基于ARM与CPLD的大圆机控制系统的设计[D]. 泉州: 华侨大学, 2007: 57-67.
ZHENG Shengjia. Design of large circular machine control system based on ARM and CPLD[D]. Quanzhou: Huaqiao University, 2007: 57-67.
[5] 卞清. 专用变频调速器研究与设计[D]. 柳州: 广西工学院, 2010: 2-5.
BIAN Qing. Dedicated inverter research and design[D]. Liuzhou: Guangxi University of Technology, 2010: 2-5.
[6] 刘涛. 工业针织大圆机实时测控系统的研究与实现[D]. 泉州: 华侨大学, 2018: 11-31.
LIU Tao. Research and implement of real-time detection and control system for industrial circular knitting machines[D]. Quanzhou: Huaqiao University, 2018: 11-31.
[7] 马海鹏. 针织圆纬机自动化和信息化关键技术研究[D]. 杭州: 浙江理工大学, 2016: 20-35.
MA Haipeng. Research of the key technology of the automation and information of circular knitting machine[D]. Hangzhou: Zhejiang Sci-Tech University, 2016: 20-35.
[8] 彭来湖, 吴英刚, 王罗俊, 等. 针织圆纬机牵拉张力闭环控制技术[J]. 纺织学报, 2018,39(10):126-129.
PENG Laihu, WU Yinggang, WANG Luojun, et al. Drawing tension closed-loop control technology of circular knitting machine[J]. Journal of Textile Research, 2018,39(10):126-129.
[9] 汪益立. 基于嵌入式Linux的大直径提花圆纬机控制软件系统研究与设计[D]. 杭州: 浙江理工大学, 2014: 2-9.
WANG Yili. Research and design of control software system for large diameter jacquard circular knitting machine based on embedded linux[D]. Hangzhou: Zhejiang Sci-Tech University, 2014: 2-9.
[10] 吴英刚, 彭来湖, 胡旭东. 圆纬机主动式送纱控制系统设计[J]. 成组技术与生产现代化, 2017(4):26-30.
WU Yinggang, PENG Laihu, HU Xudong. The design of active yarn feeding control system for circular weft machine[J]. Group Techno-logy & Production Modernization, 2017(4):26-30.
[11] 陈春松. 多路数圆型纬编针织机控制系统设计[D]. 杭州: 浙江理工大学, 2012: 15-20.
CHEN Chunsong. Design of control system for multi-route circular weft knitting machine[D]. Hangzhou: Zhejiang Sci-Tech University, 2012: 15-20.
[12] 未印. 提花圆纬机实时控制系统设计[D]. 杭州: 浙江理工大学, 2012: 18-24.
WEI Yin. Design of control system for multi-route circular weft knitting machine[D]. Hangzhou: Zhejiang Sci-Tech University, 2012: 18-24.
[13] 颜瑛晟, 胡旭东, 彭来湖. 多总线结构提花毛皮机控制系统设计[J]. 机电工程, 2015,32(12):1596-1599.
YAN Yingsheng, HU Xudong, PENG Laihu. Design of control system for jacquard pile knitting machine based on multi-bus structure[J]. Journal of Mechanical & Electrical Engineer, 2015,32(12):1596-1599.
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