## A Methodology for Systems Engineering, Volume 24 |

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Page 71

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**feedback**in a system have a decisive effect on the stability or in- stability of the system . Very complex systems may have several interacting**feedback**loops . When a system exceeds the limits of control of one**feedback**loop , if it ...Page 144

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**feedback**system . Analogous functions are listed below for four**feedback**loops discussed in Chapter 4 . Loop Technical Function 1 Forward transfer Analogous Problem - Solving Function function ( G ) Backward transfer function ( H ) ...Page 354

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**Feedback**Graph Fig . 14-12 illustrates a basic**feedback**loop . A branch with trans- mittance a leaves the middle node and returns to it . Here the transmit- a = Fig . 14-12 . Single - loop**feedback**graph . tance consists of the straight ...### Contents

WHAT IS SYSTEMS ENGINEERING? | 3 |

THE TD2 RADIO RELAY SYSTEM | 23 |

3 4 The State of the Environment at the End of | 32 |

Copyright | |

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alternative analog computer analysis basic behavior block diagram called channel Chapter circuit complete components cost creative criterion decision decision theory defined demand functions direct distance dialing discussed economic environment equation equipment evaluation example existing exploratory feedback frequency given important income individual inputs and outputs interval scale kind laboratory level of measurement logical loop manufacture Mason's rule matrix means measure ment methods minimax mixed strategy objectives operations research optimal organization payoff payoff matrix phase physical system possible preference probability problem profit properties prospectus radio ratio ratio scale relation requirements satisfy scale signal signal-flow graph specific standing plans statistical studies subsystems systems engineering systems engineering process systems synthesis TD-2 system technical techniques telephone television theory tion transfer function transmission utility utility function value system variables