Published online by Cambridge University Press: 05 June 2012
Review of Feedback Control
This appendix, a brief review of important concepts and methods from control theory, is intended to help readers review that material through self-study. A background in dynamic systems and control is essential for an understanding of the material presented in this textbook on automotive control systems. Furthermore, it is assumed that readers are familiar with the computational tools available for simulation and control in the MATLAB/Simulink environment. An excellent online tutorial is available at the Web site www.engin.umich.edu/class/ctms/.
Definitions and Motivation
System. A group of objects that are combined to function as an integrated part for a specific objective (e.g., an engine, a car, or a group of vehicles).
Inputs of a system are the means by which the state of the system can be changed.
Outputs of a system are the means by which the state of the system is manifested (e.g., in the speed control of a car, throttle [input] and speed [output] and in the directional control of a car, steering [input] and yaw rate [output]).
Control. This directs a system's inputs so that the outputs behave in the manner desired.
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