Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

LQ-PID Controller Design for Speed Control of Induction Motor

유도전동기의 속도 제어를 위한 LQ-PID 제어기 설계

  • Published : 2004.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes an LQ-PID controller to reduce errors occurring between input and output speeds in braking or emergency braking and to solve delay of speed or the excessive overshoot problems occurring at the speed control of induction motor. The conventional LQ controller is a method that move the poles in locations that satisfy design specifications such as overshoot and settling time etc. by state-feedback. So it may not be able to satisfy the overshoot requirement in case of the existence of zero in the closed loop transfer function. To attack this zero-problem it is presented a new design methodology of LQ-PID controller by introducing an analytic technique to eliminate the effect of zeros on the closed loop transfer function.

유도전동기의 속도제어시 속도의 지연이나 과도한 오버슈트가 발생하는 문제점을 해결하고 급제동 혹은 제동시 입력 속도와 출력 속도의 오차를 줄이기 위해서 LQ-PID제어기를 제안한다. LQ제어기는 극점들을 상태궤환에 의해 오버슈트와 정착시간등과 같은 설계사양을 만족하는 위치에 배치하는 방법이다. 그러나 폐루프 전달함수에 영점이 존재할때는 설계사양 오버슈트에 영향을 주므로 s-평면에서 기존의 LQ설계 방법으로는 이를 만족시킬 수 없다. 본 연구에서는 이와 같은 문제점을 해결하기 위해서 LQ제어기 설계시 폐루프 전달함수의 영점이 오버슈트에 미치는 영향을 제거할 수 있는 해석적인 방안을 포함하는 새로운 LQ-PID제어기 설계 방법을 제안하고자 한다.

Keywords

References

  1. Y.-Y. Tzou, 'DSP-Based Robust Control of AC Induction Servo Drive for Motion Con trol', IEEE Transactions on Control Systems Technology, Vol. 4, No. 6, November, 1996 https://doi.org/10.1109/87.541691
  2. G.-M. Liaw & F.J.Lin, 'A Robust Speed Controller for Induction Motor Drive', IEEE Transactions on Industrial Electronics, Vol. 41, No. 3, June, 1994 https://doi.org/10.1109/41.293901
  3. Hirokazu Tajima and Yoichi Hori, 'Speed Sensorless Field Orientation Control of the Induction Machine', IEEE Transactions on Industrial Applications, Vol.29, PP.175-180, Jan/Feb, 1993 https://doi.org/10.1109/28.195904
  4. C.Ataianese and G.Tomasso, 'Field Oriented Control of Induction Motor by means of a Controller', ISIE '99 Proceedings of the IEEE International Symposium on industrial electronics, Vol. 3, PP. 1238-1243, 1999 https://doi.org/10.1109/ISIE.1999.796876
  5. A.Chu, E.P.Nowicki, T.Chen, 'Design of a Robust Controller for a Compressor Driven by a Field Oriented Controlled Induction Motor,' IEEE Canadian Conference on electrical & computer engineering, 1998 https://doi.org/10.1109/CCECE.1998.685538
  6. Byung-Shul Suh, 'Tuning of PID Regula tors for a Second Order System via LQR Approach', International Conference on Electrical Machines, Brugge Belgium, PP. 25-28, August, 2002
  7. Gene F. Franklin, J. David Powell, Abbas Emami-Naeini, 'Feedback Control of Dynamic Systems', Prentice Hall, 2002
  8. Stephen Boyd and Lieven Vandenberghe, Course Reader for EE364, 'Introduction to Convex Optimization with Engineering Applications'. Stanford University, 2001
  9. J. Doyle, K. Glover, P. Khargonekar, and B. Francis, 'State space solutions to standard and control problem', IEEE Trans. OnAuto. Control, Vol.34, PP.831-847, 1989 https://doi.org/10.1109/9.29425
  10. Yasuhiko Dote, 'Application of Modern Control Techniques to Motor Control', Proceedings of the IEEE, Vol.76, PP. 438-454, April, 1988 https://doi.org/10.1109/5.4429
  11. F.J.Lin. 'Robust speed-contolled induction motor drie using EKF and RLS estimator', IEE Proc. Electr. Power Appl., Vol. 143, No. 3, May, 1996