Credits: 9

Language: **English**

Course description |

The course offers undergraduate students a rather broad view on Automatic Control methodologies and techniques for feedback linear systems. |

Prerequisites |

Calculus 1, Physics,Calculus 2 |

Objectives |

It starts from the modeling problem using Laplace domain transfer functions and time domain State Variables, then shows the techniques to gain an inside view to the system structure (Kalman decomposition) and stability and to analyze the system performances both at steady state and during transients. Basic design technics are then introduced and finally the methodologies for the implementation of a control devices by a computer (i.e. as a discrete-time system) is presented. |

Program |

Representation of Linear Time Invariant (LTI) systems State-variable description of linear dynamic systems; state-transition matrix and equation; characteristic equation and eigenvalues. Analysis in the time domain for discrete time and continuous time systems: free modes, eccitability and observability; free modes in the unforced evolution; free modes in the forced evolution. Analysis in the complex domain for discrete time and continuous time systems: computation of the mathematical model; computation of the forced response. The steady state response: existence conditions for periodic inputs and polynomial inputs. Computation of the state response for periodic/polynomial inputs. Decomposition of transfer functions. Impulse response and transfer functions of linear systems. Mathematical modeling of physical systems Electric networks, mechanical systems, thermal systems, hydraulic systems. DC motors and operational amplifiers in control systems. Frequency-domain plots Polar plots; bode plot; Nyquist plot; magnitude-versus-phase plot; gain and phase crossover points; minimum-phase and non minimum-phase functions. Stability of linear control systems Bounded-input bounded-output stability and zero-input stability of continuous-data systems; methods of determining stability of linear continuous-data systems. Frequency-domain analysis of control systems Resonant peak, frequency peak and bandwidth of the prototype 2n order system; Nyquist stability criterion; relative stability: gain margin and phase margin; stability analysis with the Bode plot and with the gain-phase plot; attenuation and rejection of sinusoidal disturbances; sensitivity studies in the frequency domain. Lead and Lag compensation. |

Book |

Richard C. Dorf, Robert H. Bishop, Modern Control Systems, 2008 Eleventh Edition |

Exercises |

Exercises are applications of the concepts of the topics. |

Professor |

Professor not available |