Feedback Positive

Feedback is one of the key concepts in control theory and systems theory. It describes the interaction between a system and its environment, in which information about the deviation of the system from the desired state is transmitted to the system to correct its action. Feedback can be positive or negative, depending on how it affects the system.

In this article we will consider positive feedback, which causes actions that increase the deviation of the system from its desired state. Such feedback can lead to instability of the system and strengthening of the processes that led to deviation from equilibrium.

Positive feedback can manifest itself in various fields, from economics and business to biology and ecology. For example, in economics, positive feedback can lead to increased production and higher incomes, but it can also lead to overproduction and crises. In biology, positive feedback can help increase population size, but can also lead to overpopulation and resource depletion.

One of the most striking examples of positive feedback is the process of self-excitation, when a small deviation from equilibrium leads to an intensification of the process that causes this deviation. An example of such a process is noise that is amplified in a loudspeaker, or fluctuations in an electrical circuit that can lead to overload and failure of the device.

It is important to note that positive feedback can be either beneficial or harmful, depending on the context in which it occurs. Therefore, it is important to take its presence into account when designing and managing systems in order to avoid possible negative consequences.

In conclusion, positive feedback is an important concept in control theory and systems theory. Understanding and taking it into account can help create effective systems and avoid negative consequences associated with instability and strengthening of processes that cause deviations from the desired state.

Mistakenly Assumed Views - Feedback

Algorithm of operation Feedback is a regulation mechanism that consists of three main elements: a comparing device, the so-called “sensor” of an error, an actuator that changes the state of the system, and an information transmission channel. Before the feedback becomes positive, the system must move through a segment of its unstable equilibrium towards equilibrium, i.e., successfully pass through the critical regime. With a small mismatch, the signal becomes greater than the control action. As a result, the value of the measured parameter increases, which leads to a decrease in the mismatch. The system begins to self-adjust—its equilibrium state shifts. This process continues until a new steady state (bandwidth) is established. It is determined by the amplitude of the measured signal, which carries information about the accuracy of the controlled value.

Feedback allows you to flexibly and quickly respond to changes in the external environment, reconfigure the internal parameters of systems for their best use in changing conditions, and achieve efficient use of resources. These opportunities make feedback a key part of the information economy, a key link on which the stability of the enterprise’s functioning and the success of its development strategy depend.