Real Time Digital Control of Magnetic Bearings with Microprocessors

Author

Lei, Shuliang ; Palazzolo, Alan

Author_Institution

NASA Glenn Res. Center, Cleveland, OH

Volume

2

fYear

2006

fDate

Aug. 30 2006-Sept. 1 2006

Firstpage

154

Lastpage

157

Abstract

This paper presents the work on the real time implementation of digital controllers applied to magnetic bearings to levitate high speed rotor systems. Microprocessor is employed for digital signal processing. The control loop consists of PID controller, tracking and fixed notch filters, lead compensators, and feedforward stage, etc. The controller is implemented with TI TMS320C67 processor incorporated with LabVIEW data acquisition and graphical user interface. Digital signal processing techniques including bilinear transformation, frequency pre-warping, digital filter design and I/O communications are applied to implement the control rule. The real time controller has been successfully applied to the levitations of a revolver test rig in Vibration Control Lab at Texas A&M and the energy storage flywheel system used by industries for vehicles

Keywords

data acquisition; digital control; digital filters; digital signal processing chips; feedforward; flywheels; graphical user interfaces; machine control; magnetic bearings; magnetic levitation; notch filters; real-time systems; rotors; three-term control; tracking filters; virtual instrumentation; I/O communication; LabVIEW data acquisition; PID controller; TI TMS320C67 microprocessor; bilinear transformation; control loop; digital filter design; digital signal processing; energy storage flywheel system; feedforward stage; fixed notch filter; frequency pre-warping; graphical user interface; high speed rotor system levitation; lead compensator; magnetic bearings; real time digital control; revolver test rig levitation; tracking filter; Communication system control; Control systems; Digital control; Digital signal processing; Magnetic levitation; Microprocessors; Process control; Real time systems; Three-term control; Tracking loops;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Computing, Information and Control, 2006. ICICIC '06. First International Conference on

Conference_Location

Beijing

Print_ISBN

0-7695-2616-0

Type

conf

DOI

10.1109/ICICIC.2006.335

Filename

1691951