Feedback (Kommunikation) — Feedback (engl. = Rückmeldung, Rückinformation) bezeichnet in der Kommunikation von Menschen die Rückübermittelung von Informationen durch den Empfänger einer Nachricht an den Sender jener Nachricht. Diese Informationen melden dem Sender, was der … Deutsch Wikipedia
Feedback — For other uses, see Feedback (disambiguation). Feedback describes the situation when output from (or information about the result of) an event or phenomenon in the past will influence an occurrence or occurrences of the same (i.e. same defined)… … Wikipedia
Feedback vertex set — In the mathematical discipline of graph theory, a feedback vertex set of a graph is a set of vertices whose removal leaves a graph without cycles. In other words, each feedback vertex set contains at least one vertex of any cycle in the graph.… … Wikipedia
Feedback arc set — In graph theory, a directed graph may contain directed cycles, a one way loop of edges. In some applications, such cycles are undesirable, and we wish to eliminate them and obtain a directed acyclic graph (DAG). One way to do this is simply to… … Wikipedia
Negative feedback amplifier — Figure 1: Ideal negative feedback model A negative feedback amplifier (or more commonly simply a feedback amplifier) is an amplifier which combines a fraction of the output with the input so that a negative feedback opposes the original signal.… … Wikipedia
Quantitative feedback theory — (QFT), developed by Isaac Horowitz (Horowitz, 1963; Horowitz and Sidi, 1972), is a frequency domain technique utilising the Nichols chart (NC) in order to achieve a desired robust design over a specified region of plant uncertainty. Desired time… … Wikipedia
Step response — The step response of a system in a given initial state consists of the time evolution of its outputs when its control inputs are Heaviside step functions. In electronic engineering and control theory, step response is the time behaviour of the… … Wikipedia
PAH clearance — Parameter Value renal blood flow RBF=1000 ml/min hematocrit HCT=40% renal plasma flow RPF=600 ml/min filtration fraction FF=20% glomerular filtration rate GFR=120 ml/min … Wikipedia
PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… … Wikipedia
Control theory — For control theory in psychology and sociology, see control theory (sociology) and Perceptual Control Theory. The concept of the feedback loop to control the dynamic behavior of the system: this is negative feedback, because the sensed value is… … Wikipedia
Homeostasis — (from Greek: ὅμος, hómos , equal ; and ιστημι, istēmi , to stand lit. to stand equally ; coined by Walter Bradford Cannon) is the property of either an open system or a closed system, especially a living organism, that regulates its internal… … Wikipedia