Answer / alok0207ac@gmail.com

The advantage of PID controller is its feasibility and easy to be implemented. The PID gains can be designed based upon the system parameters if they can be achieved or estimated precisely. Moreover, the PID gain can be designed just based on the system tracking error and treats the system to be "blackbox" if the system parameters are unknown. However, PID controller generally has to balance all three-gains impact to the whole system and may compromise the transient response, such as settling time, overshoots, oscillations. If the system parameters can not be precisely estimated or achieved, the designed PID gains may not resist the uncertainties and disturbances, and thus present low robustness. Even though the PID gains can be well-designed, the PID controller still has low robust ability compared with the robust controller when the system encounters to multiple challenges from the operating environment of the system, such as temperature, weather, power surge, and so on.

Answer / alok0207ac@gmail.com

Generally, PID control algorithms, using in PLC controllers withmany anolog inputs and outputs, enable control of many control loops. It is a great advantage. In my opinion the only disadvantage it is usually related to the tuning methodology. It is connected with the brand of the PLC and its type e.g. nano, micro etc. Sometimes an autotuning procedure doesn't exist e.g. VersaMax Micro from GE and then sometimes a manual tuning process is difficult.

where is the steam trap connected in boiler distribution?

0 Answers  

---

can any one tell eligibility criteria (percentage of 10th,12th & b.tech) for IES & RRB ?

3 Answers   UPSC,

---

What are the objectives of NVH (Noise Vibration and Harshness) analysis?

3 Answers   BARC,

---

What will happen if you blow the soot in the boiler?

0 Answers   ABC Inc, RRB, Siemens,

---

I was absent for a 4 supply exams.. Will there any credit decrease for that exams in r16 regulation7

0 Answers  

---

how does the belt tension is checked and what should be the tension?

1 Answers  

---

NTPC – 2009 (MECHANICAL)

0 Answers   NTPC,

---

based on the recruitment program and the expected resumption date

0 Answers   Petromar,

---

Why did you choose this career as an engineer

6 Answers   HCL,

---

What is meant by water hammering in steam line?why it is happening and how to overcome the same?

4 Answers  

---

what is the tolerance

9 Answers  

---

Enumerate some trouble of fuel injection valve

0 Answers   RRB,

---