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The control system a inputs a setpoint which represents the desired value of whatever is being measured, and inputs the feedback signal to determine the actual measured value. The difference between the two is used to calculate the error term. The error term in turn causes a change in the output that drives controlled device until the measured value equals the setpoint, and the error term is zero.
Without feedback then, the control system is blind, and is unable to tell whether changes in the control output are having the desired effect.
What else can I help you with?
How are negtive feedback different from positive feedback?
some feedback r insulting or inappropriate. it depend on how u sort the question. Question is on feed back system in control system. In a control system generally there is a setpoint to be achieved. Control system aims to achieve the setpoint. However due to inherent reasons, the actual keeps hovering around the setpoint. A good control system keeps the setpoint very close to the setpoint. Control system must know the actual value to make adjustment to achieve the setpoint. Actual value is fed back to the control system. This feed back is referred as negative or positive feedback. The feed back tells the control system that the actual value is lower or higher compared to set point. This is known as negative or positive feedback.
What are feedback systems?
As the name suggests, you feed back/put back something into the system. Feed-back systems generally have at least one input which is the also output of the system. It is used in systems where the past state of the system has some control over the present state as well. There are many examples of such a system , most famous being that of an operational amplifier which is an electronic component.
What are feeding systems?
As the name suggests, you feed back/put back something into the system. Feed-back systems generally have at least one input which is the also output of the system. It is used in systems where the past state of the system has some control over the present state as well. There are many examples of such a system , most famous being that of an operational amplifier which is an electronic component.
What does the control center do in the negative feed back cycle?
That is very hi tech question! There should be no role of any control center in negative feed back mechanism. Both should regulate each other. But then the control center is required to do the up regulation or down regulation in this negative feed back mechanism. For example your blood pressure may get set at higher level in case of chronic psychological stress. Such stress is so common now a days.
What is a engine control switch feed wire on a Chevy S 10 ignition system?
what is the engine control switch feed wire on a distributer
Examples advantages of feedfoward control.?
Feed-forward is a term describing a kind of system which reacts to changes in its environment, usually to maintain some desired state of the system. A system which exhibits feed-forward behavior responds to a measured disturbance in a pre-defined way - in contrast with a feedback system. Feed-forward is a kind of technique where you do something first and then you ask the other person (he, or she) whether what you do is right and he (or she) say 'no' and 'yes' and then you figure it out. This is a control technique that can be measured but not controlled. The disturbance is measured and fed forward to an earlier part of the control loop so that corrective action can be initiated in advance of the disturbance having an adverse effect on the system response. Many prerequisites are needed to implement a feed-forward control scheme: the disturbance must be measurable, the effect of the disturbance to the output of the system must be known and the time it takes for the disturbance to affect the output must be longer than the time it takes the feed-forward controller to affect the output. If these conditions are met, feed-forward can be tuned to be extremely effective. Feed-forward control can respond more quickly to known and measurable kinds of disturbances, but cannot do much with novel disturbances. Feed-back control deals with any deviation from desired system behavior, but requires the system's measured variable (output) to react to the disturbance in order to notice the deviation. Feed-back control is exemplified by homeostatic regulation of heartbeat in response to physical exertion. Feed-forward control can be likened to learned responses to known cues. These systems could be in control theory, physiology or computing. reference - http://en.wikipedia.org/wiki
What is a role a person plays when in the feedback loop of a machine?
In any feed back control system, the controlling device has some parameters to be set (by the operator or person) before it is put to use, so that the system works under stable conditions. Also if the behaviour of the media (which is to be controlled) changes drastically the system may not work stable, which then needs a person's intervention.
What is feed-forward control?
1. Feed-forward is a term describing a kind of system which reacts to changes in its environment, usually to maintain some desired state of the system. A system which exhibits feed-forward behavior responds to a measured disturbance in a pre-defined way - in contrast with a feedback system.2. This is a control technique that can be measured but not controlled. The disturbance is measured and fed forward to an earlier part of the control loop so that corrective action can be initiated in advance of the disturbance having an adverse effect on the system response.---------------------------------------------------------------------------------------------------------------Feed Forward control is mechanism within some control systems in which information is sent ahead in time to prepare a part of a control system.
What is Feed forward?
1. Feed-forward is a term describing a kind of system which reacts to changes in its environment, usually to maintain some desired state of the system. A system which exhibits feed-forward behavior responds to a measured disturbance in a pre-defined way - in contrast with a feedback system.2. This is a control technique that can be measured but not controlled. The disturbance is measured and fed forward to an earlier part of the control loop so that corrective action can be initiated in advance of the disturbance having an adverse effect on the system response.---------------------------------------------------------------------------------------------------------------Feed Forward control is mechanism within some control systems in which information is sent ahead in time to prepare a part of a control system.
What negative feed back?
negative feed back is one which is given to the same system from which the output is obtained, in order to reduce the intensity or to stop giving that output
What is the purpose of a back feed breaker in an electrical system?
The purpose of a back feed breaker in an electrical system is to prevent electricity from flowing back into the grid, which can cause safety hazards and damage to equipment. It helps ensure that electricity flows in the intended direction and protects the system from potential issues.
How does back feed electrical occur in a power system and what are the potential risks associated with it?
Back feed electrical occurs in a power system when electricity flows in the opposite direction than intended, such as from a generator back into the grid. This can happen when there is a fault or improper connection in the system. The potential risks associated with back feed electrical include electrical shock, equipment damage, and fires due to overloading or short circuits. It is important to have proper safety measures in place to prevent back feed electrical and mitigate its risks.
