Experimental validation and comparison between different active control methods applied to a journal bearing supported rotor

Autor(es)

Wu, Matheus Freire ^[1] ; Cavalca, Katia Lucchesi ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Mech Engn, Lab Rotating Machinery, 200 Rua Mendeleyev, BR-13083860 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: STRUCTURAL CONTROL & HEALTH MONITORING; v. 26, n. 12 DEC 2019.
• Citações Web of Science: 0

Resumo

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 H-infinity, mu synthesis, and polynomially parameter-dependent static H-infinity), 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. (AU)

• Processo FAPESP: 17/15494-0 - Controle de vibrações de uma bancada de testes com mancais hidrodinâmicos usando controle gain-schduled
• Beneficiário: Matheus Freire Wu
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
• Processo FAPESP: 15/20363-6 - Identificação e controle tolerantes a falhas em sistemas rotativos
• Beneficiário: Katia Lucchesi Cavalca Dedini
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/13059-1 - Controle com parâmetros linearmente variantes aplicado a máquinas rotativas
• Beneficiário: Matheus Freire Wu
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto