文摘
The paper deals with the modeling and control of redundantly actuated parallel mechanisms. The redundant actuation means the redundant number of actuators, that is, more actuators than degrees of freedom of the mechanism. These machines bring the possibility of removing the backlash by the so-called antibacklash control. However, control of such a structure suffers from several new control problems like the danger of mutual fighting of the redundant actuators. This is especially problematic if the geometric imperfections appear. The presented solution is based on the usage of robust sliding mode control for uncertain dynamics. The paper explains classic approach of sliding mode control and its new modification based on the uniform usage of all actuators replaced by the fictitious auxiliary drives. The verification of the proposed algorithms is presented by two planar mechanisms with four actuators and three degrees of freedom. The first one is the fiber-driven mechanism, and the second one is the rigid 4RRR mechanism “Crosshead.” Keywords Parallel kinematics Fiber-driven mechanism Redundant actuation Sliding mode control Antibacklash control Model uncertainties Page %P Close Plain text Look Inside Reference tools Export citation EndNote (.ENW) JabRef (.BIB) Mendeley (.BIB) Papers (.RIS) Zotero (.RIS) BibTeX (.BIB) Add to Papers Other actions Register for Journal Updates About This Journal Reprints and Permissions Share Share this content on Facebook Share this content on Twitter Share this content on LinkedIn Related Content Supplementary Material (0) References (21) References1. Neugebauer, R. (ed.): Development Methods and Application Experience of Parallel Kinematics, PKS 2002. IWU FhG, Chemnitz (2002) 2. Müller, A.: Modeling and control of redundantly actuated parallel manipulators. Fortschritt-Berichte VDI: Reihe 18, Mechanik, Bruchmechanik, vol. 337, X, 114 pp. VDI-Verl, Düsseldorf (2013). 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Prentice-Hall, New Jersey (1991) MATH About this Article Title Robust sliding mode control of redundantly actuated parallel mechanisms with respect to geometric imperfections Journal Multibody System Dynamics Volume 36, Issue 3 , pp 221-236 Cover Date2016-03 DOI 10.1007/s11044-015-9481-8 Print ISSN 1384-5640 Online ISSN 1573-272X Publisher Springer Netherlands Additional Links Register for Journal Updates Editorial Board About This Journal Manuscript Submission Topics Vibration, Dynamical Systems, Control Optimization Electrical Engineering Mechanical Engineering Automotive Engineering Keywords Parallel kinematics Fiber-driven mechanism Redundant actuation Sliding mode control Antibacklash control Model uncertainties Industry Sectors Automotive Electronics IT & Software Telecommunications Consumer Packaged Goods Aerospace Oil, Gas & Geosciences Engineering Authors F. Procházka M. Valášek Z. Šika (1) Author Affiliations 1. Prague, Czech Republic Continue reading... 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