feedback control


Also found in: Acronyms.

feedback control

(electronics)
A control system which monitors its effect on the system it is controlling and modifies its output accordingly. For example, a thermostat has two inputs: the desired temperature and the current temperature (the latter is the feedback). The output of the thermostat changes so as to try to equalise the two inputs.

Computer disk drives use feedback control to position the read/write heads accurately on a recording track. Complex systems such as the human body contain many feedback systems that interact with each other; the homeostasis mechanisms that control body temperature and acidity are good examples.
References in periodicals archive ?
To control the Neimark-Sacker bifurcation to the fixed point, the ordinary, dislocated, enhancing, and random feedback control methods are introduced as shown in the following.
This is beyond the present limit of "mechanical brains," and hence represents the present limit of feedback control and of automation.
Extended Feedback Control allows superior control of fill levels to automatically ensure regulatory compliance.
Recently Lixin Tian [9] developed the control of an optical hyper-chaotic system based on a non-autonomous feedback control scheme.
It is intended for use in industrial ventilation systems and is employed for feedback control of rotation velocity of fans with standard (0-10) V feedback signal.
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.
In general, there are two types of quality control schemes that have been investigated for injection molding: observer-based quality control and direct quality feedback control.
More information on Immersion's tactile feedback control technologies is available at www.
It combines age-old proven-drip technology with modern measurement, computational processing, and feedback control electronics.
Patent & Trademark Office for a new patent for an integrated feedback control system that is designed to improve the safety, reliability and lifetime of proton exchange membrane (PEM) fuel cells.
The fundamental heart of the technology is the closed-loop feedback control between the wheels and the steering wheel.
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.