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1.feedback in control system improves the speed of response2.using feedback in control system we can reduce the sensitivity of the system to parameter variation
H2 is an LQG marthod that allow you to desin your controller in the frequency domain. Actually there are only few methods to control a MIMO system in the frequency domain. Classical llop shaping control works only for SISO systems Andrea Calanca
The sensitivity of an open loop control system is always 1, it is due to no feedback involved in open loop.
The main reason for not using feedback control system is that time lag may cause a process deviation near the beginning of a process not to be recognized until the process output. It can result in substantial deviation throughout the entire process, causing an error to continue without adjustment. Since feedback control systems usually take input from one sensor. there may be better and more direct ways to control a system using multiple sensors. Operator intervention is usually required when the system is not able to maintain stable closed-loop control. Feedback control systems do not take predictive control actions for effects of known disturbances.
The adaptive control is basically a feedback system that treats CNC as an internal unit in which the machining variables automatically adapt themselves to the actual conditions of the machining process.
gain of the system decreases.....
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Answering "List the advantage and disadvantage of object oriented database model?" Answering "List the advantage and disadvantage of object oriented database model?"
When there is no feedback to control its output.
advantage and disadvantage of system model
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advantage: directly pass input to processor disadvantage: take away memory from a system file to implement a cache
DISADVANTAGE : 1)- Irrigates less area . ADVANTAGE : 1)- Not much expensive to use this method .
One disadvantage of the management control system is a lack of standard control. Another disadvantage is there is no room for change and low employee morale.
A: It is any system where there is negative feedback to control its behavior
An advantage of the docket system, in a pharmacy, is the orderly filling of prescriptions. A disadvantage is the waiting time for some customers.