• 沒有找到結果。

6.1 Conclusion

This thesis has demonstrated the self-learning fuzzy control(SLFC) system for forward type and flyback type DC-DC conveters, where the new type control algorithm SLFC has been developed in which the rule bases do not need to be prior defined. The SLFC design method can automatically generate the rule bases to achieve better performance. In the rule modifier, the modification value is obtained from fuzzy inference of modification rules so that the learning algorithm can proceed reasonably and quickly. Experimental results have been provided to demonstrate the robust control performance of the proposed control systems under the occurrence of uncertainties.

6.2 Future Work

In the future, we can apply other intelligent control strategy to implement the DC-DC converters on the FPGA board. Such as, sliding-mode self-learning control and other adaptive fuzzy control, etc. In this thesis, the FPGA implementation of the proposed control method is more complicated than PI control and fuzzy control. So what we have to do is to reduce the chip area of the FPGA processor. So the SLFC control algorithm needs to be simplified in order to make the SLFC more efficient and low cost.

References

[1] R. D. Middlebrook and S. Cuk, Advances in Switched-Mode Power Conversion, Pasadena, Teslaco, 1981.

[2] N. Mohan, Tore M. Undeland and William P. Robbins, Power electronics : converters, applications, and design, John Wiley & Sons, 1989.

[3] H. W. Whittington, B. W. Flynn and D. E. Macpherson, Switched mode power supplies : Design and construction, Wiley, 1992.

[4] A. Luchetta, S. Manetti, M.C. Piccirilli and A. Reatti, “Frequency domain analysis of DC-DC converters using a symbolic approach,” IEEE Trans. Circuits and Syst., vol. 3, pp.

2043-2046, May 1995.

[5] N. Femia and M. Vitelli, “Frequency domain analysis of DC-DC converters with internally controlled switching instants,” IEEE Power Electron. Congress, pp. 269–276, Oct. 1996.

[6] J. Alvarez-Ramirez, I. Cervantes, G. Espinosa-Perez, P. Maya and A. Morales, “A stable design of PI control for DC-DC converters with an RHS zero,” IEEE Trans. Circuits and Syst.

I, vol. 48, pp. 103 - 106, Jan. 2001.

[7] J A. Kugi and K. Schlacher, “Nonlinear H-controller design for a DC-to-DC power converter,” IEEE Trans. Control Syst. Technol., vol. 7, pp. 230-237, Mar. 1999.

[8] E. Vidal-Idiarte, L. Martínez-Salamero, H. Valderrama-Blavi, F. Guinjoan and J. Maixé,

“Analysis and design of H control of nonminimum phase-switching converters,” IEEE Trans. Circuits and Syst. I, vol. 50, pp. 1316-1323, Oct. 2003.

[9] S. K. Mazumder, A. H. Nayfeh and D. Borojevic, “Robust control of parallel DC–DC buck converters by combining integral-variable-structure and multiple-sliding-surface control schemes,” IEEE Trans. Power Electron., vol. 17, pp. 428-437, May 2002.

[10] S. L. Jung, M. Y. Chang, J. Y. Jyang, H. S. Huang, L. C. Yeh and Y. Y. Tzou, “Design and implementation of an FPGA-based control IC for the single-phase PWM inverter used in an UPS”, Power Electron. and Drive Syst. Conference vol.1, pp. 344–349, May 1997.

[11] M. Lopez, L. G. Vicuna, M. Castilla, P. Gaya and O. Lopez, “Current distribution control design for paralleled DC/DC converters using sliding-mode control,” IEEE Trans. Ind.

Electron., vol. 51, pp. 419-428, April 2004.

[12] C. C. Lee, “Fuzzy logic in control systems: fuzzy logic controller-part I/II,” IEEE Trans.

Syst., Man and Cybern., vol. 20, pp. 404-435, March 1990.

[13] Lin, B.-R., “Analysis of fuzzy control method applied to DC-DC converter control”, APEC '93. Conference Proceedings, pp. 22–28, March 1993.

[14] J. R. Timothy, Fuzzy Logic with Engineering Application, McGraw-Hill, New York, 1995.

[15] W. C. So, C. K. Tse and Y. S. Lee, “Development of a fuzzy logic controller for dc/dc converters: design, computer simulation and experimental evaluation,” IEEE Trans. Power Electron., vol. 11, pp. 24-32, Jan. 1996.

[16] L. X. Wang, A Course in Fuzzy Systems and Control, Prentice-Hall, Englewood Cliffs, New Jersey, 1997.

[17] A. Balestrino, A. Landi and L. Sani, “Cuk converter global control via fuzzy logic and scaling factors,” IEEE Trans. Ind. Appl., vol. 38, pp. 406-413, March 2002.

[18] L. X. Wang, Adaptive Fuzzy Systems and Control - Design and Stability Analysis, Prentice-Hall, Englewood Cliffs, New Jersey, 1994.

[19] H. Lee and M. Tomizuka, “Robust adaptive control using a universal approximator for SISO nonlinear systems,” IEEE Trans. Fuzzy Syst., vol. 8, pp. 95-106, Jan. 2000.

[21] A. Homaifar and E. McCormick, “Simultaneous design of membership functions and rule sets for fuzzy controllers using genetic algorithms,” IEEE Trans. Fuzzy Syst., vol. 3, pp.

129-139, May 1995.

[22] C. F. Juang, J. Y. Lin and C. T. Lin, “Genetic reinforcement learning through symbiotic evolution for fuzzy controller design,” IEEE Trans. Syst., Man and Cybern., Pt B, vol. 30, pp. 290-301, April 2000.

[23] A. Barrado, E. Olias and A. Lazaro, “PWM-PD Multiple Output DC/DC Converters : operation and control-loop modeling,” IEEE Trans., Power Electron., vol. 19, pp. 140-149 , January 2004.

[24] P. T. Krein, J. Bentsman, R. M. Bass and B. L. Lesieutre, “On the use of averaging for the analysis of power electronic systems,” IEEE Trans. Power Electron., vol. 5, pp. 182-190, April 1990.

[25] T. Gupta, R. R. Boudreaux, R. M. Nelms and J. Y. Hung, “Implementation of a fuzzy controller for dc-dc converters using an inexpensive 8-b microcontroller”, IEEE Trans. Ind.

Electron., vol. 44, pp. 661-669, Oct. 1997.

[26] R. R. Boudreaux, R. M. Nelms, and J. Y. Hung, “Simulation and modeling of a DC-DC converter controlled by an 8-bit microcontroller,” APEC '97 Conference Proceedings, vol.2 pp. 963–969, Feb 1997.

[27] E. Vidal-Ldiarte, L. Martine-Salamero, F. Guinjoan, J. Calvente and S. Gomariz, “Sliding and fuzzy control of a boot converter using an 8-bit microcontroller,” IEEE Proc., Electron.

Power Appl., vol. 151, pp. 5-11, Jun. 2004.

[28] S. L. Jung, M. Y. Chang, J. Y. Jyang, L. C. Yeh and Y. Y. Tzou, “Design and implementation of an FPGA-based control IC for AC-voltage regulation”, Power Electron.

and Drive Syst. Conference, vol.14, pp. 522–532, May 1999.

[29] F. M. Yasin, A. Tio, M. S. Islam; M. I. Reaz and M. S. Sulaiman, “The hardware design of temperature controller based on fuzzy logic for industrial application employing FPGA”, Microelectron. 16th Conf., pp. 157-160, Dec. 2004.

[30] The website of AlTERA company: http://www.altera.com

[31] , VHDL , , 1999.

[32] , VHDL , , 1999

Appendix I

相關文件