Chemical Engineering - Process Control and Instrumentation - Discussion
Discussion Forum : Process Control and Instrumentation - Section 2 (Q.No. 35)
35.
In a closed loop system, the process to be controlled is an integrating process with transfer function l/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit
Discussion:
5 comments Page 1 of 1.
Getahun menasbo said:
2 years ago
How? please give details to understand the answer.
PRITESH said:
4 years ago
For close loop transfer function = (1/2s )/(1 +(1/2s)*(1/T1s) ).
So by simplify and compared with 2nd order general equation.
Zita will be 0 so it's less than 1 so the system becomes underdamped.
So by simplify and compared with 2nd order general equation.
Zita will be 0 so it's less than 1 so the system becomes underdamped.
Abhay Raj said:
8 years ago
Because, we are introducing I- controller which will create an oscillation in the system, and if a system has oscillation that system must have less than 1, that's why the system will lie under the underdamped category.
(1)
Ram said:
8 years ago
Please, give me the explanation of the answer.
Nik said:
9 years ago
How? Pease give in detail.
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