Scholarlink

<p>The UVW parallel platform is an advanced three-axis motion control system, renowned for achieving efficient “rotation + translation” motion in a single operation. This capability has made it widely applicable in alignment systems for solder paste printers, playing a critical role in ensuring the conductivity and stability of circuit boards. However, some existing UVW platforms rely on manual calibration of motor pivot point coordinates, which suffer from insufficient precision, compromising alignment accuracy. To address this issue, this study proposes a method for correcting the motor pivot point coordinates of UVW platforms. By integrating motion modeling, sampling of mark points, and least-squares error processing, the true coordinates of the motor pivot point are calculated through an overdetermined equation, achieving a transition from coarse engineering calibration to precise theoretical calibration. Experimental results demonstrate that, compared to manually calibrated motor pivot point coordinates, the proposed method reduces horizontal alignment repeatability errors by 43% to 49% while maintaining vertical direction error at a similar level.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A correction algorithm for determining the motor pivot point coordinates of UVW platforms based on a kinematic motion model

  • 期刊论文

  • 发表日期：

    2025年7月22日

查看全文
  • Yunchao Zhi,
  • Qunfeng Liu,
  • Mingming Zhang,
  • Jiarui Zhang

摘要

The UVW parallel platform is an advanced three-axis motion control system, renowned for achieving efficient “rotation + translation” motion in a single operation. This capability has made it widely applicable in alignment systems for solder paste printers, playing a critical role in ensuring the conductivity and stability of circuit boards. However, some existing UVW platforms rely on manual calibration of motor pivot point coordinates, which suffer from insufficient precision, compromising alignment accuracy. To address this issue, this study proposes a method for correcting the motor pivot point coordinates of UVW platforms. By integrating motion modeling, sampling of mark points, and least-squares error processing, the true coordinates of the motor pivot point are calculated through an overdetermined equation, achieving a transition from coarse engineering calibration to precise theoretical calibration. Experimental results demonstrate that, compared to manually calibrated motor pivot point coordinates, the proposed method reduces horizontal alignment repeatability errors by 43% to 49% while maintaining vertical direction error at a similar level.