Question

Give an example of a feed-forward reaction.

Answer 1

Feed-forward is a word that describes a system that reacts to changes in its surroundings in order to maintain a desired condition. Feed-forward control can respond to known and measured disturbances more quickly, but it can't do much with unknown disturbances.

Complete answer:
Fructose1,6bisphosphate activates pyruvate kinase, which is a good example of feed-forward activation. Their own enzyme system regulates such a glycolytic intermediate. When glycolysis is activated, the activity of pyruvate kinase should likewise increase, allowing total carbon flow across the pathway. The feed forward activation method ensures that enzymes are serving in accordance with the overall goal of energy production.

A feed forward, also spelled feedforward, is a component or conduit in a control system that transmits a controlling signal from a source in the system's external environment to a load in another part of the system's external environment. This is frequently an external operator's command signal.

In contrast to a system with only feed-forward behaviour, which adjusts the input to take account of how it affects the load and how the load itself may vary unpredictably, a system with feedback adjusts the input to take account of how it affects the load and how the load itself may vary unpredictably; the load is considered to belong to the system's external environment.

The control variable adjustment in a feed-forward system is not error-based. Instead, it is based on process knowledge in the form of a mathematical model of the process, as well as knowledge about, or measurements of, process disturbances.

For a pure feed-forward without feedback control method to be reliable, some criteria must be met: an external command or controlling signal must be accessible, and the effect of the system's output on the load must be known (that usually means that the load must be predictably unchanging with time). Because once a control signal has been transmitted, it cannot be further changed; any remedial adjustment must be made via a fresh control signal, pure feed-forward control without feedback is sometimes referred to as 'ballistic.' 'Cruise control,' on the other hand, uses a feedback system to alter the output in reaction to the load it faces.

Note: The supply of context for what one intends to say prior to that communication is known as feedforward. Feedforward establishes an expectation that the actor anticipates in deliberate conduct. This gives confirming feedback when the predicted event occurs.