Spectral properties and identification of aerostatic bearings

• 作 者: Jan Kozánek Ladislav Pust
• 机 构: Institute of Thermomechanics AS CR,
• 出 处: Acta Mechanica Sinica
• 发表日期: 2011年01期
• 关键词: bearings matrices inlet rotation harmonic excitation damping diagonal Modified V

Modified rotor kit Bently Nevada was used for dynamic characteristics measurements of new developed aerostatic bearings.Mathematical model of these bearings is considered as linear.Model was identified with the help of harmonic force excitation independently from the speed of journal rotation.The stiffness and damping matrices were identified for different air inlet pressures.The calculated spectral properties allow to determine the stability boundary for suitable variation of model parameters.

Modified rotor kit Bently Nevada was used for dynamic characteristics measurements of new developed aerostatic bearings. Mathematical model of these bearings is considered as linear. Model was identified with the help of harmonic force excitation from the speed of journal rotation. The stiffness and damping matrices were identified for different air inlet pressures. The calculated spectral properties allow to determine the stability boundary for suitable variation of model parameters.