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Schematic of an AGC used in the analog telephone network; the feedback from output level to gain is effected via a Vactrol resistive opto-isolator.. Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.
A balanced panel (e.g., the first dataset above) is a dataset in which each panel member (i.e., person) is observed every year. Consequently, if a balanced panel contains N {\displaystyle N} panel members and T {\displaystyle T} periods, the number of observations ( n {\displaystyle n} ) in the dataset is necessarily n = N ⋅ T {\displaystyle ...
A less common type of dashpot is an eddy current damper, which uses a large magnet inside a tube constructed of a non-magnetic but conducting material (such as aluminium or copper). Like a common viscous damper, the eddy current damper produces a resistive force proportional to velocity. A common use of the eddy current damper is in balance scales.
Tuning a control loop is the adjustment of its control parameters (proportional band/gain, integral gain/reset, derivative gain/rate) to the optimum values for the desired control response. Stability (no unbounded oscillation) is a basic requirement, but beyond that, different systems have different behavior, different applications have ...
Control systems play a critical role in space flight. Control engineering or control systems engineering or Automation engineering (In Some European Countries) is an engineering discipline that deals with control systems, applying control theory to design equipment and systems with desired behaviors in control environments. [1]
There are many types of physical devices that can act as inertia dampers: Stockbridge damper - absorbs resonant wave motions in wire and support cables, seen on high voltage power lines. [2] Shock absorber - motion redirected as heating of viscous oil forced through a restrictive passage [3]
Conventional shock absorbers can be combined with air suspension springs - an alternate way to achieve ride-height control, and self leveling suspension. In an electrorheological fluid damper, an electric field changes the viscosity of the oil. This principle allows semi-active damper applications in automotive and various industries.
Both Boeing and Honeywell have contributed significantly to the introduction of digital autopilot technology into the civil aviation sector. [2] A patent for the system was awarded to Boeing in 2006. [3] Honeywell has also been developing a system with Airbus, and a prototype has been tested on small aircraft. [4]
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