## Automatic control systems |

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### Contents

Introduction to Feedback Control Systems | 1 |

Equations and Models of Linear Systems | 10 |

General Feedback Theory | 58 |

Copyright | |

9 other sections not shown

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### Common terms and phrases

amplifier asymptotes block diagram Bode plot breakaway point characteristic equation closed-loop system coefficients compensated system compensation network complex corner frequency corresponding damping ratio dead zone decibels describing function determined elements Example feedback control system forward path frequency response G(ju gain margin given by Eq given in Fig impedance input signal Laplace transform last equation linear system motor negative Nichols chart node Nyquist path Nyquist plot obtained open-loop transfer function output response overshoot parameters phase margin phase plane phase shift phase-lag phase-lead compensation pole-zero configuration poles and zeros positive rad/sec real axis reference input relay return difference right half root contours root loci root locus diagram rotor s-plane sampled-data system sampler sampling instants second-order servo system servomechanism shaft shown in Fig signal flow graph sinusoidal stability steady-state error synchro system given system shown tachometer torque transient response unity-feedback unstable variable velocity voltage z-transform zero-order hold