纺织学报 ›› 2022, Vol. 43 ›› Issue (08): 176-182.doi: 10.13475/j.fzxb.20210506607

• 机械与器材 • 上一篇    下一篇

新型夹纱器压电驱动器的运动特性

马训鸣1,2, 李峙毅1(), 吕广雷1, 陈勇洁1   

  1. 1.西安工程大学 机电工程学院, 陕西 西安 710600
    2.西安市现代智能纺织装备重点实验室, 陕西 西安 710600
  • 收稿日期:2021-05-25 修回日期:2022-04-23 出版日期:2022-08-15 发布日期:2022-08-24
  • 通讯作者: 李峙毅
  • 作者简介:马训鸣(1963—),男,教授。主要研究方向为机械自动化技术。
  • 基金资助:
    陕西省重点研发计划项目(2019GY–106);西安市现代智能纺织装备重点实验室项目(2019220614SYS021CG043)

Kinematic characteristics of new piezoelectric actuator for yarn gripper in looms

MA Xunming1,2, LI Zhiyi1(), LÜ Guanglei1, CHEN Yongjie1   

  1. 1. School of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710600, China
    2. Xi'an Key Laboratory of Modern Intelligent Textile Equipment, Xi'an, Shaanxi 710600, China
  • Received:2021-05-25 Revised:2022-04-23 Published:2022-08-15 Online:2022-08-24
  • Contact: LI Zhiyi

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摘要：

为解决传统电磁夹纱器响应频率低、一致性差等问题,提出了基于压电技术设计新型夹纱器的新方法,并对其压电驱动器进行动态分析。首先对压电驱动器静态参数及影响端部位移的参数进行分析,得到其最佳夹持长度;随后建立悬臂式压电驱动器动力学模型并使用MatLab对系统进行仿真,分析了各个参数的数值改变对系统动态特性与稳定性的影响;最后搭建实验平台对压电驱动器进行测试,验证了压电驱动器的先进性。仿真和实验结果表明:驱动电压为150 V,频率为10 Hz,压电驱动器端部最大位移为1.49 mm左右,达到最大位移的系统响应时间稳定在1.6 ms;相比国内外电磁夹纱器,动态性能有了明显提高。

关键词: 夹纱器, 压电驱动器, 动力学方程, 运动特性, 织机

Abstract:

Aiming at the low response frequency and poor consistency of the traditional electromagnetic yarn grippers, a new design of yarn grippers based on piezoelectric technology was proposed and its piezoelectric actuator was analyzed dynamically. The static parameters of the piezoelectric actuator and the parameters affecting the position shift of the piezoelectric actuator were analyzed, and the optimal holding length was obtained. The dynamic model of cantilever piezoelectric actuator was established and the system was simulated by MatLab. The influence of the numerical changes of each parameter on the dynamic characteristics and stability of the system was analyzed. Finally, an experimental platform was built to test the piezoelectric actuator, and the advance of the piezoelectric actuator was verified. The simulation and experimental results show that when the driving voltage is 150 V, the frequency is 10 Hz, the maximum displacement of the piezoelectric actuator end is 1.49 mm, and the response time of the system reaches the maximum displacement is stable at about 1.6 ms. Compared with the electromagnetic yarn grippers, the dynamic performance of the new piezoelectric actuator has been significantly improved.

Key words: yarn gripper, piezoelectric actuator, kinetic equation, kinematic characteristic, loom

中图分类号: 

  • TH132

图1

压电夹纱器示意图 1—上壳体; 2—双柔性铰链; 3—下壳体; 4—滑动轴承; 5—压电片。"

图2

压电片沿轴线微位移示意图 L—压电弯曲片总长; X1—沿轴线方向的微小位移。"

图3

悬臂式压电弯曲片示意图"

图4

非夹持长度与位移关系"

图5

每层压电层厚度与位移关系"

图6

压电弯曲片动力学模型"

图7

阻尼比对系统的影响"

图8

等效刚度对系统的影响"

图9

等效质量对系统的影响"

图10

零极点图"

图11

系统伯德图"

图12

实验测试平台"

图13

测试结果"

图14

数据分析结果"

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