Research on Observer and Compensator for Noise Disturbances in CNC Servo System

Author

Zhao, Guoyong ; Zhao, Yugang ; Zhang, Lili

Author_Institution

Dept. of Mech. Eng., Shandong Univ. of Technol., Zibo, China

Volume

3

fYear

2010

fDate

11-12 May 2010

Firstpage

53

Lastpage

56

Abstract

The CNC servo system should keep stabilization, have strong robustness and achieve satisfied tracking accuracy all the time when machining, even if machine tool parameters vary or machine tool comes under disturbances. The influence of noise disturbances to system tracking accuracy is analyzed in detail in the paper. Furthermore, the noise disturbances on the electric interface of servo system driver elements, such as excursion and seasonal electric disturbances, are observed, and the observe compensation rate is added to the output of position controller. The simulations against typical noise disturbance signal show that the developed observer and compensator approach can reduce tracking error and enhance the restrain disturbance capability.

Keywords

compensation; computerised numerical control; machine tools; machining; observers; position control; servomechanisms; tracking; CNC servo system; compensator; machine tool; machining; noise disturbance signal; observer; position controller; system tracking accuracy; Atmospheric modeling; Computer numerical control; Control systems; Error correction; Machine tools; Machining; Noise robustness; Servomechanisms; Steady-state; Transfer functions; noise disturbance; observer and compensator; tracking error;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4244-7279-6

Electronic_ISBN

978-1-4244-7280-2

Type

conf

DOI

10.1109/ICICTA.2010.196

Filename

5523373