Graphical Methods for Control Systems


Up to this stage, the methods and techniques applied to the feedback control systems are analytical and in both the time and s-parameter domains. In many situations when the systems are linear, graphical methods may prove to be very useful to reveal system characteristics and performance. In a sense, these graphical methods compress a great deal of information in the time domain into the parameter domain in a single figure. The parameter domains considered in this chapter are the s-parameter domain of the Laplace transformation, and the ω-parameter domain of the frequency response function. The frequency response function can simply be obtained by replacing the s-parameter of the system transfer function with iω.

11.1Root Locus Method and Root Locus Plots
11.2Polar and Bode Plots
11.3Nyquist Plots and Stability Criterion
11.4Gain Margin and Phase Margin
11.5Lines of Constant Magnitude: M Circles
11.6Lines of Constant Phase: N Circles
11.7Nichols Charts
11.8Applications of MATLAB for Graphical Constructions
Exercise Questions

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In