A control method to suppress the swing vibration of a hybrid excavator using sliding mode approach
- Authors
- Jin, Kyokook; Park, Taejoon; Lee, Hyeongcheol
- Issue Date
- May-2012
- Publisher
- SAGE PUBLICATIONS LTD
- Keywords
- variable structure system; hybrid excavator; sliding mode control; motion control; observer state feedback
- Citation
- PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, v.226, no.5, pp.1237 - 1253
- Indexed
- SCIE
SCOPUS
- Journal Title
- PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
- Volume
- 226
- Number
- 5
- Start Page
- 1237
- End Page
- 1253
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165663
- DOI
- 10.1177/0954406211421260
- ISSN
- 0954-4062
- Abstract
- This article presents a control method for suppressing the swing vibration of a hybrid excavator. For control design, dynamic models of typical swing motions of the hybrid excavator are derived using a system identification technique. Because the system states of the obtained models are not directly measurable, a sliding mode observer is designed to estimate the system states. A sliding mode control is designed to provide robust tracking performance against the parameter variations and uncertain non-linearities caused by changes in the working conditions. A complicated mathematical model of the hybrid excavator which captures detailed mechanical, electrical, and hydraulic characteristics is developed for system analysis and simulation. The feasibility and effectiveness of the proposed control method are verified by simulations and actual tests in comparison with a conventional proportional and integral controller.
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