feedback control system


Also found in: Acronyms.

feedback control system

[′fēd‚bak kən′trōl ‚sis·təm]
(control systems)
A system in which the value of some output quantity is controlled by feeding back the value of the controlled quantity and using it to manipulate an input quantity so as to bring the value of the controlled quantity closer to a desired value. Also known as closed-loop control system.

feedback control system

A control system, comprising one or more feedback controls, that combines functions of the controlled signals with functions of the commands to maintain prescribed relationships between them. See feedback (ii).
References in periodicals archive ?
Minimizing instrumentation and tuning this system in the laboratory were practical because standing synergies under perturbation could be simplified [17,18,20,33] and this feedback control system only operated along two dimensions (AP, ML).
The structure of the proposed PID feedback control system for inventory control is summarized in Figure 1.
In other words, [gamma][[PHI].sub.e]([omega]) - [gamma]/1 - [gamma] [[PHI].sub.d]([omega])/[[PHI].sub.r - e]([omega]) > 1 for one or some [omega] is a signature of significant process changes and gives the signal that the current feedback control system cannot satisfy the robust stability theorem.
1.5 cover glass as its bottom and with its underside coated with transparent, electrically conductive material, the Delta-T dish offers high-resolution viewing with optimum thermal control via an electronic feedback control system. The system also prevents unwanted ambient light from entering the specimen and provides fluid perfusion and/or C[O.sub.2] control to stabilize osmolarity.
An important property of a closed-loop feedback control system is that the quality of its performance is only as good as the quality of its measurements.
However, most of the feedback control system proposed needs sensors for measuring the trolley position as well as the load swing motion.
The integrated feedback control system is designed to allow PEM fuel cells to operate more efficiently under variable loads, such as those encountered during the braking and accelerating of a fuel cell vehicle.
According to EnerFuel, the integrated feedback control system is designed to allow PEM fuel cells to operate more efficiently under variable loads, such as those encountered during the braking and accelerating of a fuel cell vehicle, as well as prevent the fuel cell membrane from drying out.
Aeration rate is managed with a temperature feedback control system through the facility computer.
Said to be of even greater concern, an integrated feedback control system responding to this erroneous variation is quite likely to introduce, via automatic corrections, a degree of product variation previously non-existent, according to the manufacturer.
non-contact) force and a feedback control system, thereby eliminating the friction associated with conventional bearings.