Fast Positioning Performance In Ball Screw Mechanism With Disturbance Observer

Loh, Ser Lee and Chong, Shin Horng and Foo, Jia En and Hee, Wai Keat and Hasim, Norhaslinda (2016) Fast Positioning Performance In Ball Screw Mechanism With Disturbance Observer. Jurnal Teknologi, 78. pp. 71-78. ISSN E-ISSN2180-3722

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Ball screw mechanisms are widely applied in different industries due to their capability in achieving precise positioning performance as well as its long travel range for positioning,travelling and contouring actions.However, this mechanism exhibits nonlinearities in micro movement. In this paper,a disturbance observer and PD controller (PDDO) is proposed in ball screw mechanism to achieve fast and precise positioning performance.A macrodynamic mathematical model of the mechanism is derived.PDDO controller is designed to achieve fast positioning in micro travel range.The robustness of the controller against mass is examined.The experimental results demonstrated that the PDDO controller achieves better performance in fast tracking (3 Hz) with working range at 100 μm,1 mm and 3 mm as compared to the PID controller.Besides that,the PDDO controller also demonstrated its robustness in the presence of mass changes.

Item Type: Article
Uncontrolled Keywords: Ball screw mechanism, disturbance observer, PD controller
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Electrical Engineering
Depositing User: Mohd. Nazir Taib
Date Deposited: 22 May 2018 06:14
Last Modified: 10 Jul 2021 17:11
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