Agradecimentos: The authors would like to thank Grants # 2015/20363-6, # 2016/13059-1, and # 2017/15494-0 from the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for the financial support; the TU Darmstadt Institute of Applied Dynamics for the laboratory equipment and infrastructure...

Agradecimentos: The authors would like to thank Grants # 2015/20363-6, # 2016/13059-1, and # 2017/15494-0 from the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for the financial support; the TU Darmstadt Institute of Applied Dynamics for the laboratory equipment and infrastructure necessary for this research; Prof Dr.-Ing. Richard Markert for the supervision; Dr. Bastian Pfau for the help with the experiment design and theoretical discussions; and MSc. Leonardo Biagiotti Saint Martin for helping to correct and improve the text

Abstract: Rotors supported by cylindrical hydrodynamic journal bearings usually face rotational speed limitations due to the unstable motion caused by oil whip effect. An active magnetic bearing is utilized as auxiliary component to suppress oil whip and reduce unbalance lateral vibration amplitude...

Abstract: Rotors supported by cylindrical hydrodynamic journal bearings usually face rotational speed limitations due to the unstable motion caused by oil whip effect. An active magnetic bearing is utilized as auxiliary component to suppress oil whip and reduce unbalance lateral vibration amplitude at critical speed. Three distinct control methods are considered for the actuation force (dynamic H8, µ synthesis, and polynomially parameter-dependent static H8), which must be designed to perform in a situation with varying parameters and uncertainties. These techniques are tested in scenarios with collocated and noncollocated feedback (emulating a magnetic actuator with magnetic flux sensors). The different resultant performances are successfully compared with each other numerically and experimentally

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2015/20363‐6; 2016/13059‐1; 2017/15494‐0; 2017/15494‐0; 2016/13059‐1; 2015/20363‐6

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