Modeling and control of a feed drive with multiple mechanically coupled ball screws

Min-Fu Hsieh, Wu Sung Yao, Chun Hao Hsu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents the modeling and control of a single-axis feed drive that is jointly driven by three ball screw/motor units. These ball screws are bridged by a mechanical coupling, via which a joint thrust can be produced from the three drive units for high-power output (e.g., injection molding machines). Synchronous positioning of these drive units can also be applied to the handling of large workpieces. For such a coupled system, a mathematical model is first derived and constructed using a system identification technique developed in this paper. A control scheme based on the master-slave control is then designed to improve the system performance with the mechanical coupling. To ensure synchronization of the three drive units, a synchronous compensator is also designed using the genetic algorithm. Finally, the performance of the entire control system is experimentally verified.

Original languageEnglish
Pages (from-to)1227-1238
Number of pages12
JournalAsian Journal of Control
Issue number5
Publication statusPublished - 2012 Sep 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

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