Sunday, December 8, 2013

Communication

Question 1 List the advantages and the disadvantages of a closed handbuild operate on ashes. Advantages: Faster response to an input signal. telling flapping rejection. Better tracking of reference signals. humiliated sensitivity to schema parameter errors (example: errors in plant or biddingler gains) crushed sensitivity to changes in calibration errors (recalibration is unnecessary) More accurate concord of plant under disturbances and literal variations. Effective and flexible control condition tuning by varying the control gain procedure to stabilize musical arrangements that be inherently unstable in the open-loop form. Disadvantages: unravel the use of sensors which increase the system costs. Involve more than components which leads to more costs and complexity The power costs (due to high gains) ar high. It has a more complex design, and harder to build. Sometimes obtaining the take center is either hard or not economically feasible. initial tuning is more difficult especially if the bandwidth is narrow.
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There is constantly a steady state error ( with proportional controllers) The system tends to become unstable as the gain is increased beyond certain limits. Question 2 Pressure measurement vector A insisting mensuration transmitter has a postpone input- sidetrack graph just like the one shown in measure transmitter graph. The input range is 0 to 200 kilopascals (kPa), and the output ! range is 10 to 50 mA. Find the following: pressure siding Cm when input C = 72 kPa. input C when output Cm = 13.7 mA. Solution: Equation for pressure measuring transmitter is Cm = 0.2C + 10. When C = 72 kPa, put back C into equation: Cm = 0.2 x 72 + 10 = 24.4. procedure equation above: Cm = 0.2C + 10 and then depute 13.7mA into Cm. Where equation as follows:- C = 13.7-100.2= 3.70.2= 18.5 kPaIf you want to allow a full essay, order it on our website: OrderCustomPaper.com

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