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  • 标题:Dual-Position-Controller Design for the Linear-Motor-Driven Motion System
  • 本地全文:下载
  • 作者:Yuan-Yong HUANG ; Rong-Hwang HORNG ; Yi-Ti SHIH
  • 期刊名称:Journal of System Design and Dynamics
  • 电子版ISSN:1881-3046
  • 出版年度:2007
  • 卷号:1
  • 期号:2
  • 页码:270-282
  • DOI:10.1299/jsdd.1.270
  • 出版社:The Japan Society of Mechanical Engineers
  • 摘要:

    This work develops a dual-controller composed of a macroscopic controller (MAC) and a microscopic controller (MIC) for improving motion precision of a linear-motor-driven motion system. Based on the macroscopic model in which Coulomb friction model is considered, the MAC is designed. In the presliding region however, the MIC design is based on the lineralized microscopic model. Furthermore, a switching algorithm is developed for bumpless transfer in shifting control action between two controllers. Thus, when the table of motion stage moves to the desired position, the control action can be smoothly switched from the MAC to the MIC. The whole system with the proposed dual-controller has the advantage that it serves as a long stroke (coarse stage) and a short stroke (fine stage) to achieve high precision motion control. The experimental results reveal that it totally takes 2.59 seconds to reach the 1000 μm target position with the accuracy of one BLU (basic length unit; sensor resolution), 20 nm ; the result has over 29% improvement when compared with the result using single MAC. In addition, good nanometer-scale tracking performance with the accuracy of one BLU, 20 nm , can be obtained by using the MIC.

  • 关键词:Linear-Motor-Driven Motion System; Macroscopic Model; Microscopic Model; Dual-Controller; Nanometer-Scale Trajectory
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