A Study on Integral Equalities Related to a Laplace Transformable Function and its Applications

  • Kwon, Byung-Moon (Guidance and Control Department, Korea Aero Space Research Institute) ;
  • Ryu, Hee-Seob (Ubiquitous Computing Lab., Samsung Advanced Institute of Technology) ;
  • Kwon, Oh-Kyu (School of Electrical and Computer Engineering, Inha University)
  • 발행 : 2003.03.01

초록

This paper establishes some integral equalities formulated by zeros located in the convergence region of a Laplace transformable function. Using the definition of the Laplace transform, it shows that Laplace transformable functions have to satisfy the integral equalities in the time-domain, which can be applied to the understanding of the fundamental limitations on the control system represented by the transfer function. In the unity-feedback control scheme, another integral equality is derived on the output response of the system with open-loop poles located in the convergence region of the output function. From these integral equalities, two sufficient conditions related to undershoot and overshoot phenomena in the step response, respectively, are investigated.

키워드

참고문헌

  1. The Fourier Transform and Its Applications(3rd ed.) R. N. Bracewell
  2. Automatic Control Systems(7th ed.) B. C. Kuo
  3. Modem Control Engineering(3rd ed.) K. Ogata
  4. IEEE Conf. Decis. Contr. Qualitative step response limitations of linear systems L. H. Mcwilliams;M. K. Sain
  5. Automatica v.29 no.6 Influence of zero locations on the number of step-response extrema M. El-Khoury;O. D. Crisalle;R. Longchamp https://doi.org/10.1016/0005-1098(93)90023-M
  6. IEEE Trans. on Automat. Contr. v.39 no.3 On undershoot in SISO systems B. A. Leon de la Barra https://doi.org/10.1109/9.280763
  7. Ph. D. thesis, Inha Univ. Zeros property analyses with applications to control system design B. M. Kwon
  8. IEEE Trans. on Automat. Contr. v.30 no.6 Right half plane poles and zero and design tradeoffs in feedback systems J. S. Freudenberg;D. P. Looze https://doi.org/10.1109/TAC.1985.1104004
  9. Automatica v.27 no.2 Trade-offs in linear control system design R. H. Middleton https://doi.org/10.1016/0005-1098(91)90077-F
  10. IEEE Trans. on Automat. Contr. v.40 no.10 Sensitivity integral relations and design trade-offs in linear multivariable feedback systems J. Chen https://doi.org/10.1109/9.467680
  11. IEEE Trans. on Automat. Contr. v.44 no.4 Feedback limitations in nonlinear systems: from Bode integrals to cheap control M. M. Seron;J. H. Braslavsky;P. V. Kokotovic;D. Q. Mayne https://doi.org/10.1109/9.754828
  12. Proc. SICE 2001 Fundamental limitations imposed by RHP poles and zeros in SISO systems B. M. Kwon;H. S. Ryu;D. W. Kim;O. K. Kwon
  13. IEEE Trans. on Automat. Contr. v.26 no.2 Undershooting phenomenon and its control in linear multivariable servomechanisms T. Mita;H. Yoshida https://doi.org/10.1109/TAC.1981.1102601
  14. IEEE Trans. on Automat. Contr. v.31 no.5 On undershoot and non-minimum phase zeros M. Vidyasagar
  15. Automatica v.35 Fundamental limitations due to $j{\omega}$-axis zeros in SISO systems G. C. Goodwin;A. R. Woodyatt;R. H. Middleton;J. Shim https://doi.org/10.1016/S0005-1098(98)00224-6