A feedback path in a self-regulating control system. Unlike a standard open state trigger that needs to have a connection established to serve as a trigger, a closed loop trigger will act to trigger a security system when its loop (connection) is broken.
An NC control with a positional feed back system. See also open loop
A closed loop distribution arrangement, is where the pallets remain in direct control of the pallet's owner. For example, holding Work in Progress, being transferred between areas within the same factory or business. There is less risk of the pallets being lost or damaged, in a Closed Loop situation, and this prolongs and protects the pallet's working life.
A regulator circuit in which the actual value of the controlled variable (such as pressure, temperature or speed) is sensed and a signal proportional to this value (feedback signal) is compared with a signal proportional to the desired value (set point signal). The difference between these signals (error signal) causes the controlling device to change in the direction that will reduce the difference in signals to zero.
a loop that starts and ends at one of the ends of an anti-parallel beta sheet
a watercooling loop that has no reservoir, and at most will have a fill tube (a tube used for topping up coolant)
A broadly applied term, relating to any system in which the output is measured and compared to the input. The output is then adjusted to reach the desired condition. In motion control, the term typically describes a system utilizing a velocity and/or position transducer to generate correction signals in relation to desired parameters.
refers to those times when an EFI computer is using the feedback on the mixture provided by the oxygen sensor to effectively control the injected amounts.
Continuously controlled system.
A signal path which includes a forward path, a feedback path and a summing point, and forms a closed circuit.
A broadly applied term relating to any system where the output is measured and compared to the input. The output is then adjusted to reach the desired condition. In motion control, the term is used to describe a system wherein a velocity or position (or both) transducer is used to generate correction signals by comparison to desired parameters.
Implementing feedback to regulated position and/or velocity with respect to commanded.
A means of operating a control surface by means of flexible wires, under tension, attached to either side; sometimes known as pull-pull.
Used to describe a link ing structure where a group of web pages interlink heavily while there are few or no links to or from pages outside the group. General consensus is that search engines can detect closed loops and penalize pages in closed loops. It is currently unclear exactly where the cut-off point is. Is it only a closed loop if there are no links to or from pages outside the group or also if there are just too few such links? It is generally advisable to have links to outside pages that in turn also link to many outside pages.
A control strategy in which actions are determined by feedback from the existing environment.
Control system that is constantly changing, based on inputs from sensors. See also: OPEN LOOP.
When distributed tests are run on a single system, it is called closed loop testing. This is also known as loopback testing.
A combination of control units in which the process variable is measured and compared with the desired value (or set point). If the measured value differs from the desired value, a corrective signal is sent to the final control element to bring the controlled variable as close as possible to the desired value.
Controller in automatic mode. See Mode.
A method of designing a control or guidance system in which all the elements (sensors, computers, actuators, etc.) are linked in such a way as to operate continuously with feedback between the elements. The guidance systems for Apollo spacecraft were closed loop systems.
A motion system that uses a feedback device to provide position and velocity data for status reporting and the accurate control of position and velocity.
The basic principle of electronic engine management in which input from an oxygen sensor allows the engine control computer to determine and maintain a nearly perfect air-fuel ratio. To enter closed loop operation, the oxygen sensor must be producing a vo
refers to an RFID system in which RF tags remain under the control of a single company. Because tags are continuously recycled, the cost of the tag is amortized over many process cycles. Closed-loop systems are typically used for higher value applications, such as assembly lines.
Continuously looped system used primarily in such instances as refrigeration so that the refrigerant can be circulated, compressed and expanded within the system.