A semiactive control scheme for a 6-DOF model of a rotor-bearing system with a MR suspension

Author

Cabrera-Amado, A. ; Silva-Navarro, G.

Author_Institution

Dept. de Ing. Electr. - Seccion de Mecatronica, Centro de Investig. y de Estudios Av. del I.P.N., Mexico City

fYear

2008

fDate

12-14 Nov. 2008

Firstpage

398

Lastpage

403

Abstract

This work deals with the problem of balancing control of a rotor-bearing system, which consist of one rotor mounted on two nonorthotropic supports, one of them a traditional journal bearing and the other a journal bearing supported by an arrangement of two radial magneto-rheological (MR) dampers, whose rheological properties depend on the current inputs. The mathematical model of the 6 degrees of freedom rotor-bearing system consists of one disk with unbalance mounted on a shaft and two nonorthotropic supports. For control design purposes a Choi-Lee-Park polynomial model is considered for the two MR dampers, which are quite consistent with the nonlinear and complex hysteresis behavior and also simplifies the implementation issues of the balancing control scheme. The controller for the unbalance response is synthesized using sliding-mode control techniques. Finally, some simulation results are reported to illustrate the dynamic performance of the overall open-loop and closed-loop system.

Keywords

closed loop systems; machine bearings; magnetorheology; mechanical variables control; nonlinear control systems; open loop systems; suspensions (mechanical components); variable structure systems; 6-DOF model; Choi-Lee-Park polynomial model; MR dampers; MR suspension; closed-loop system; hysteresis behavior; nonorthotropic supports; open-loop system; radial magnetorheological dampers; rotor-bearing system; semiactive control scheme; sliding-mode control techniques; Control systems; Damping; Magnetic levitation; Magnetic properties; Mathematical model; Open loop systems; Rheology; Shafts; Shock absorbers; Sliding mode control; MR dampers; Rotor-bearing system; Sliding Mode Control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering, Computing Science and Automatic Control, 2008. CCE 2008. 5th International Conference on

Conference_Location

Mexico City

Print_ISBN

978-1-4244-2498-6

Electronic_ISBN

978-1-4244-2499-3

Type

conf

DOI

10.1109/ICEEE.2008.4723452

Filename

4723452