Modelling and system identification of active magnetic bearing systems
نویسندگان
چکیده
منابع مشابه
Modelling of Control System for an Active Magnetic Bearing
Active Magnetic Bearing (AMB) supports a rotor by magnetic attractive forces, without any mechanical contact. The paper presents a field-circuit model of an active magnetic bearing including its control loop. The basic parameters of the active magnetic system has been obtained from a FEM analysis of an magnetic bearing actuator. The position control system is based on operation of the local con...
متن کاملAnalysis of Vibration Characteristics of PD Control Active Magnetic Bearing and Cracked Rotor System (RESEARCH NOTE)
Crack fault of rotor is one of the most prominent problems faced by magnetic bearing rotor system. In order to improve the safety performance of this kind of machinery, it is necessary to research the vibration characteristics of magnetic bearing cracked rotor system. In this paper, the stiffness model of the crack shaft element was established by the strain energy release rate (SERR) theory. T...
متن کاملThe Development of a Flexible Rotor Active Magnetic Bearing System
A design process comprising aspects of modelling and analysis is developed, implemented and verified for a flexible rotor active magnetic bearing system. The system is specified to experience the first three critical frequencies up to an operating speed of 10,000 rpm. Rotor stability at critical frequencies places specific constraints on the equivalent stiffness and damping parameters of the ac...
متن کاملDeterministic Models of an Active Magnetic Bearing System
In this paper the development of mathematical model of voltage-input and current-input active magnetic bearing (AMB) system in deterministic form is presented. The AMB system, which is open-loop unstable and highly coupled due to nonlinearities inherited in the system such as gyroscopic effect and mass imbalance, requires a dynamic controller that can stabilize the system. In order to synthesiz...
متن کاملA System Identification Technique Using Bias Current Perturbation for the Determination of the Magnetic Axes of an Active Magnetic Bearing
Inherent in every Active Magnetic Bearing (AMB) are differences between the expected geometric axes and the actual magnetic axes due to a combination of discrepancies, including physical variation from manufacturing tolerances and misalignment from mechanical assembly, fringing and leakage effects, as well as variations in magnetic material properties within a single AMB. A method is presented ...
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ژورنال
عنوان ژورنال: Mathematical and Computer Modelling of Dynamical Systems
سال: 2007
ISSN: 1387-3954,1744-5051
DOI: 10.1080/13873950600605250