High speed tracking control of ball screw drives

Chao Yi Liu, Ruei Yu Huang, An-Chen Lee

Research output: Contribution to journalConference articlepeer-review

Abstract

This paper presents a new method to achieve the requirement of high speed and high precision for ball screw drive. First, a PI controller is adopted to increase the equivalent structural damping in the velocity loop. Next, the design of the position controller is implemented by a two-stage method. The Doubly Coprime Factorization Disturbance Observer (DCFDOB) is developed to suppress disturbance and resist modelling error in the inner loop, while the outer loop is then designed based on method to extend the system bandwidth over first resonant frequency so that high speed and high accuracy can be achieved. Finally, a feedforward controller is implemented to improve tracking performance. The experiment results showed that the proposed method has smaller tracking error and better performance for suppressing disturbance when compared to the conventional cascaded P-PI control.

Original languageEnglish
Article number012030
JournalIOP Conference Series: Materials Science and Engineering
Volume241
Issue number1
DOIs
StatePublished - 1 Nov 2017
Event2017 5th Asia Conference on Mechanical and Materials Engineering, ACMME 2017 - Tokyo, Japan
Duration: 9 Jun 201711 Jun 2017

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