基于时域法的经编机电子横移系统动态性能  

Dynamic performance of electronic shogging system on warp knitting machine based on time domain method

作　　者：王博浩 郗欣甫 孙以泽[1] WANG Bohao;CHI Xinfu;SUN Yize(College of Mechanical Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学机械工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2021年第6期58-65,共8页Journal of Donghua University(Natural Science)

摘　　要：针对国内经编机电子横移系统提速困难、高速运行时出现振荡的现象,建立经编机电子横移系统的数学模型,采用时域法对电子横移系统进行降阶处理,并在MATLAB/Simulink软件中进行仿真验证。分析加入机械传动部分对电子横移系统性能的影响,结果表明,机械传动部分的加入会向系统中引入一对靠近虚轴、阻尼比极小的共轭复根,使得系统有发生振荡的趋势。分析位置调节器增益和速度调节器增益对电子横移系统性能的影响,结果表明,增大位置调节器增益和速度调节器增益有利于提高电子横移系统的响应速度并增大系统的带宽,但过大的位置和速度调节器增益将使系统产生机械谐振现象,不利于系统的稳定性。The mathematical model of electronic shogging system for warp knitting machine was established for the phenomenon of difficulty in speeding up and oscillation during high-speed operation of the domestic warp knitting machine. The reduced order model for electronic shogging system was established using time domain analysis method, and all the models were analyzed and verified by MATLAB/Simulink software. The effect of the addition of a mechanical transmission part on the performance of electronic shogging system was analyzed. The results show that the addition of a mechanical transmission part introduces a pair of conjugate complex roots close to the imaginary axis with very small damping ratios into the system, causing the system to tend to oscillate. The effects of position and speed regulator gain on the performance of electronic shogging system were analyzed. The result shows that increasing the position and speed regulator gain is beneficial to the dynamic response and brandwidth of electronic shogging system. However, excessive gain of position regulator and speed regulator will cause torsional oscillation, which is not good for the system stability.

关 键 词：经编机 电子横移系统 伺服系统 系统仿真 时域分析 机械谐振 

分 类 号：TS183.3[轻工技术与工程—纺织材料与纺织品设计]