A novel method for shaft torsional oscillation suppression in servo systems

Author

Lei Gu ; Shan-ming Wan ; Jicheng Yu

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2012

fDate

18-20 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

Torsional oscillations have been widely existed in load combined ac servo systems. Torsional oscillation could be a fatal factor that bound speed loop bandwidth, and exacerbate system dynamic response. This paper presents a method to design a PI controller for the speed loop of a one-mass system and determines the reason of the torsional oscillation of a two-mass system based on the frequency characteristics. The method is schemed to identify the resonant frequency of two-mass system and notch filter is proposed to effectively compensate the torsional vibration. Simulation results confirm that this method, if properly tuned, is an effective technique to identify the resonant frequency and reduce the torsional oscillation.

Keywords

AC machines; PI control; control system synthesis; dynamic response; machine control; notch filters; oscillations; servomechanisms; shafts; vibration control; PI controller design; dynamic response; frequency characteristics; load combined ac servo system; notch filter; one-mass system; resonant frequency; shaft torsional oscillation suppression; torsional vibration; two-mass system; Bandwidth; Gain; Oscillators; Resonant frequency; Shafts; Time-frequency analysis; Velocity control; identification of the resonant frequency; notch filter; torsional oscillation; two-mass system;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering and Automation Conference (PEAM), 2012 IEEE

Conference_Location

Wuhan

Print_ISBN

978-1-4577-1599-0

Type

conf

DOI

10.1109/PEAM.2012.6612469

Filename

6612469