Answer / koolfire

P,PID controller'S are used to tune the output to a desired value.
however for proportional controllers it always has a steady state error as the output will never reach the desired value but will be close to it.

For  a PID controller due to its integral and derivative action(rate of change of error), it cancels out the steady state error.

For what reason would you possibly be compelled to make use of a Smith Predictor. Explain the idea behind the operation of this device.

0 Answers  

---

pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

0 Answers   Siemens,

---

Introduce yourself which is not present in your biodata?

0 Answers   GAIL,

---

Dear All can any one told me that VFD Make ABB Model ACS800-01 used for dual Source like 1.DC Source applied at terminal UDC+,UDC- 2. 3 phase 400AC,50Hz

1 Answers  

---

Why not come out analog output in ABB EL3020 when display show correct value

0 Answers  

---

---

Explain why plc require in analog input 4-20amp & 0-10 volt?

0 Answers  

---

what does a positioner in control valve ?

11 Answers  

---

Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor

0 Answers   CCIE,

---

what is cascade system ?

1 Answers   RSP, Thermax,

---

what is difference between hart signal and analog signal (4 to 20 ma)

2 Answers   Takreer,

---

In turbine, what does term CDP, NI, NH, HSSOC, means

0 Answers   ADMA OPCO,

---

what is differance  between SOE an alarams

1 Answers   BMM,

---