Analysis and Synthesis of Feedback Control Systems in the Parameter Plane II-Sampled-Data Systems

This paper presents parameter-plane analysis and synthesis of sampled-data linear control systems. Just as in the continuous system case,¹ the proposed method permits the designer to obtain readily the information about the effects on both the absolute and relative stability of adjusting system parameters. Since the characteristic equations in the parameter plane can be factored in a straightforward manner for various values of system parameters, the salient characteristics of system response may be advantageously designed by the presented procedure. The introduction of the Chebyshev functions makes the procedure ideal for simulation on a digital computer. Also, all analytical and graphical operations are performed in the real domain.