## Feedback and control systemsIf you want top grades and thorough understanding of feedback and control systems—both analog and digital—in less study time, this powerful study tool is the best tutor you can have! It takes you step-by-step through the subject and gives you accompanying problems with fully worked solutions—plus hundreds of additional problems with answers at the end of chapters, so you can measure your progress. You also get the benefit of clear, detailed illustrations. Famous for their clarity, wealth of illustrations and examples—and lack of tedious detail—Schaum’s Outlines have sold more than 30 million copies worldwide. This guide will show you why! |

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approximation asymptotes block diagram Bode gain Bode plots Chapter characteristic equation closed-loop poles closed-loop system closed-loop transfer function coefficients complex poles continuous system continuous-time contour curve damping ratio db magnitude db magnitude-phase angle defined Definition determined difference equation differential equation discrete-time system error constant feedback control system finite frequency response function gain crossover frequency gain margin GH(jw given in Fig Hence independent variable initial conditions input Laplace transform lead compensator lead network linear loop magnitude-phase angle plot Nichols chart node nonlinear Nyquist Path Nyquist Stability Plot obtained open-loop transfer function output parameter phase angle phase lead phase margin phase plane Polar Plot pole-zero map poles and zeros polynomial real axis root-locus roots s-plane Section shown in Fig signal flow graph solution specifications steady state error system is stable system of Problem unit circle unit step unity feedback system z-transform zero-order hold