Author:
Ghosh Gaurav,Jha Abhishek Kumar,Dasgupta Sovan Sundar
Abstract
Abstract
Rotating machinery with high speed powered by industrial motors frequently suffers from instability by exhibiting non-linear jump phenomena, formally known as Sommerfeld effect. The drives whose excitation is a function of the system responses, referred to as non-ideal. The system dynamics of such systems exhibit a couple of complex and interesting features when the input power exceeds a critical value. The present research suggests a novel approach to study the efficacy of active magnetic bearing with fractional PD controller to suppress the instability caused by the Sommerfeld effect. The steady-state results obtained by solving the system characteristic equation numerically is compared with the transient analysis. Finally, root locus method is introduced to obtain the bifurcation points at which this kind of instability completely disappears.
Subject
General Physics and Astronomy
Reference14 articles.
1. Beiträge zum dynamischen ausbauder festigkeitslehe;Sommerfeld;Phys Z,1902
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