방사형 기저 함수망 외란관측기를 이용한 서보시스템의 저속응답 성능개선 = Performance Improvement of Servo System in the Low Speed Operation Region Using RBFN Disturbance Observer

다국어 초록 (Multilingual Abstract)

A new scheme to estimate the moment of inertia in the servo motor drive system in very low speed is proposed in this paper. The typical speed estimation scheme in most servo system for low speed operation is sensitive to the variation of machine parameters, especially the moment of inertia. To estimate the motor inertia value, the observer using the Radial Basis Function Networks(RBFN) is applied. The effectiveness of the proposed inertia estimation method is verified by experiments. It is concluded that the speed control performance in the low speed region is improved with the proposed disturbance observer using RBFN.

국문 초록 (Abstract)

본 논문에서는 극저속 영역에서 서보 전동기 구동 장치의 관성을 추정하는 기법을 제안한다. 대개의 서보 시스템에서 저속 영역의 성능 향상을 위해 사용되는 순시 속도 관측기는 관성계수와 같은 기계계 파라미터의 변동에 민감하다. 이와 같은 문제를 해결하기 위해 방사형 기저 함수망(Radial Basis Function Networks)을 이용하는 전동기 관성을 추정기법을 제안한다. 실험을 통하여 제안한 추정기법의 타당성을 검증한다.

참고문헌 (Reference)

1 "Performance Improvement of Sensorless Vector Control for Induction Motor Drives Fed by Matrix Converter Using Nonlinear Model and Disturbance Observer" 1341-1347, 2004

2 "Performance Evaluation of a Velocity observer for Accurate Velocity Estimation of a Servo Motor Drives" 36 : 98-104, Feb.2000

3 "New Motion Control with Inertia Identification Function Using Disturbance Observer"

4 "Neural Fuzzy Systems" Prentice Hall 1996.

5 "Inertia Identification for the Speed Observer of the Low Speed Control of Induction Machines" 32 : 1371-1379, nov.1996

6 "Improvement of low speed operation of electric machine with an inertia identification using ROELO" 151 : 116-120, Jan.2004

7 "High-Performance Speed Control of Electric Machine Using Low-Precision Shaft Encoder" 14 : 838-849, Sept.1999

8 "Field-Weakening in High-Performance PMSM Drives" 1718-1724, 2000

9 "An Instantaneous Speed Observer for Low Speed Control of AC Machine" 581-589, 1998

10 "A Novel Inertia Identification Method for Speed Control of Electric Machine" 1234-1239, 1996