Temat: LuGre model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental and numerical analysis of stick-slip suppression with the use of longitudinal tangential vibration
Autorzy:: Rybkiewicz, Marta
Gutowski, Paweł
Leus, Mariusz
Powiązania:: https://bibliotekanauki.pl/articles/2055033.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: stick-slip phenomenon
longitudinal tangential vibrations
LuGre model
Opis:: The results of experimental tests and numerical simulation analyses of the possibility of partial reduction or entire elimination the stick-slip phenomenon in sliding motion through introduction of longitudinal tangential vibrations to the contact zone of a shifted body and the substrate are shown in the paper. The experimental tests were carried out on a specially designed stand. In the computational model, the dynamic equation of motion of the shifted body was used, and for the friction force description the LuGre model was adopted. A excellent consistency of the experimentally determined results with those calculated with the use of the developed model is obtained.
Źródło:: Journal of Theoretical and Applied Mechanics; 2020, 58, 3; 637--648
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Planning task-based motions of multi-link manipulator models prone to vibration
Autorzy:: Jarzębowska, E.
Augustynek, K.
Urbaś, A.
Powiązania:: https://bibliotekanauki.pl/articles/127759.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: dynamics
GPME algorithm
manipulator
LuGre friction model
dynamika
algorytm GPME
model tarcia LuGre
Opis:: A new method of designing tip-point trajectories for industrial manipulators with structural flexibility and friction in their supports and joints is presented in the paper. The method is based upon the formulation of the reference dynamics model of the manipulator model. The reference dynamics models are derived off-line for desired trajectories, i.e. trajectory patterns are delivered in constraint equation forms. A library of reference dynamics models can be generated off-line and serve for verification of desired motions feasibility, ability of reaching required velocities and accelerations in order to obtain the desired trajectories, and estimate power needed for desired motions execution. It enables off-line tests of a system model behavior when it moves a desired trajectory. Also, the reference dynamics enables verification of vibrations that may accompany desired motions, since at the stage of defining a desired trajectory, e.g. for performing a servicing task, a system behavior is unknown. The paper is dedicated to reference dynamics analysis, for a multi-link manipulator model, for which friction in joints is modeled by the LuGre model, the manipulator links are rigid but light and prone to vibrations. The results of the reference dynamics analysis are presented in a series of simulation studies.
Źródło:: Vibrations in Physical Systems; 2018, 29; 1-9
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A study of dynamic hysteresis model for a magnetorheological damper
Autorzy:: Chen, Kun-Yung
Kung, Ming-Lung
Powiązania:: https://bibliotekanauki.pl/articles/2200888.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: identification
LuGre model
magnetorheological damper
self-learning particle
swarm optimization
SLPSO
sliding mode observer
SMO
Opis:: The paper proposes a new dynamic model based on the LuGre model and an electrical equation to describe the hysteresis phenomenon for a magnetorheological (MR) damper. In addition, a sliding mode observer (SMO) is proposed to estimate unmeasurable states of the MR damper. The parameters of the MR damper are successfully identified by using the self-learning particle swarm optimization (SLPSO) algorithm. The contributions of this paper are: i) a new dynamic model based on the LuGre model and an electrical equation for an MR damper is successfully formulated to fit for the hysteresis behavior, ii) the exerted damping force can be practically adjusted by using input voltage for the dynamic model, iii) the SMO is proposed to estimate the internal states and current, and iv) the unknown parameters of the MR damper are successfully identified by using the SLPSO algorithm with a numerical experiment.
Źródło:: Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 259--274
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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