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Publisher DOI: 10.1002/gamm.202300004
Title: Application of stable inversion to flexible manipulators modeled by the absolute nodal coordinate formulation
Language: English
Authors: Drücker, Svenja  
Seifried, Robert  
Issue Date: 1-Mar-2023
Publisher: Wiley-VCH Verlag
Source: GAMM-Mitteilungen: in Press (2023)
Abstract (english): 
Compared to conventional robots, flexible manipulators offer many advantages, such as faster end-effector velocities and less energy consumption. However, their flexible structure can lead to undesired oscillations. Therefore, the applied control strategy should account for these elasticities. A feedforward controller based on an inverse model of the system is an efficient way to improve the performance. However, unstable internal dynamics arise for many common flexible robots and stable inversion must be applied. In this contribution, an approximation of the original stable inversion approach is proposed. The approximation simplifies the problem setup, since the internal dynamics do not need to be derived explicitly for the definition of the boundary conditions. From a practical point of view, this makes the method applicable to more complex systems with many unactuated degrees of freedom. Flexible manipulators modeled by the absolute nodal coordinate formulation (ANCF) are considered as an application example.
DOI: 10.15480/882.4968
ISSN: 1522-2608
Journal: GAMM-Mitteilungen 
Institute: Mechanik und Meerestechnik M-13 
Document Type: Article
Project: Adaptive Regelung nichtlinearer differentiell-algebraischer Systeme aus der Mehrkörperdynamik 
Projekt DEAL 
Peer Reviewed: Yes
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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