대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1992년도 하계학술대회 논문집 A
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- Pages.242-244
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- 1992
역전달 학습법(BP)을 이용한 직류 서보 전동기의 위치및 속도 제어 특성개선
Improvement in the Position and Speed Control of a Dc-Servo Motor Using Back Propagation Method
- Kim, Cheol-Am (Dept. of Electrical Eng., Kon-Kok Univ.) ;
- Lee, Eun-Chul (Dept. of Electrical Eng., Kon-Kok Univ.) ;
- Kim, Soo-Hyun (Dept. of Electrical Eng., Kon-Kok Univ.) ;
- Kim, Nak-Kyo (Dept. of Electrical Eng., Kon-Kok Univ.) ;
- Nam, Moon-Hyun (Dept. of Electrical Eng., Kon-Kok Univ.)
- 발행 : 1992.07.23
초록
Conventionally in the industrial control, PlD controller has been used because of its robustness, and nonlinear characteristic of a system under control. Although the PlD controller produce suitable parameter of the each system and also variable of PlD controller should be changed according to environment, disturbance, load. In this paper, the convergence and learning accuracy of the back-propagation(BP) method in neural network are investigated by analyzing the reason for decelerating the convergence of BP method. and examining the rapid deceleration of the convergence when the learning is executed on the part of sigmoid activation function with the very small first derivative. The modified logistic activation function it proposed by defining the convergence factor based on the analysis and applied to the position and speed control of a DC-servo motor. This paper revealed for experimental, a neural network and a PD controller combined off-line system using developed the position and speed characteristics of a DC-servo motor.
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