Transactions on Control, Automation and Systems Engineering

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Improvement of Transient Step Response Using Feedforward Compensator in Nonminimum Phase Systems

  • Kwon, Byung-Moon (School of Electrical and Computer Engineering, Inha University) ;
  • Ryu, Hee-Seob (School of Electrical and Computer Engineering, Inha University) ;
  • Kwon, Oh-Kyu (School of Electrical and Computer Engineering, Inha University)
  • Published : 2001.09.01
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Abstract

This paper proposes a simple feedforward compensator in order to decrease the amount of undershoots and overshoots on the step response in nonminimum phase systems. The compensator makes the step type input be a ramp input with saturation for 0$\leq$t<${\alpha}$. It is shown in this paper that the compensated system has small amount of undershoot and overshoot at the price of rise time compared to the system without compensator. Also, provided the system is properly stable, the influence of the design parameter ${\alpha}$ on the step response of the nonminimum phase system is investigated in the case of Type A, and Type B undershoot, which gives a guideline for the compensator design.

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References

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