Controlled system - Closed loop system

In summary, the speaker is having trouble solving an assignment involving calculating the distance from origin to the breakaway point and using it to find the jw coordinate for the pole. They have tried using various equations and methods but are not getting the correct answer according to the solution manual. They suggest sharing a PDF of the assignment for others to view and possibly help with the problem.
  • #1
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I have this assignment (First problem - exercise 2 - dias 7)
http://site.iugaza.edu.ps/bhamed/files/2010/02/L4-Root-Locus.ppt

Which i am having some problems solving.
I am stuck at B)

So far i tried to solve the problem, by calculating the distance from origin to the breakaway point, by diff. , and then using Tan(ArcCos(0.707)) * breakaway to get the jw coordinate for the pole.

With the σ and jw for the pole, I then solve K2 for the charactic equation.

where i get the value K2 = 6.23475*10^6
calc: showing ch. eq => Redbox indicate S, and bluebox indicate jw value
http://snag.gy/Fkz26.jpg

Jw calculation: http://snag.gy/oZ4u9.jpg
But according to solution manual it should be 81000..

I don't see where i am going wrong.
 
Last edited:
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  • #2
I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
 
  • #3
might help if you can post a pdf of the original assignment. Cutepdf or pdf995 printer emulator can convert any document to a pdf file. I don't have Office to view your assignment, others may have the same problem. The flexibility of the PDF995 is it will work with any program even compilers, as its just a printer emulator

http://www.pdf995.com/download.html
 

Related to Controlled system - Closed loop system

1. What is a controlled system?

A controlled system is a system that can be manipulated or controlled by an external force or input. It typically consists of a set of components, such as sensors and actuators, that work together to achieve a desired output or response.

2. What is a closed loop system?

A closed loop system is a type of controlled system where the output is continuously monitored and compared to a desired setpoint. Any difference between the setpoint and the actual output is used to adjust the input or control signal, thus closing the loop and maintaining the desired output.

3. What are the advantages of using a closed loop system?

Closed loop systems have several advantages, including improved stability, accuracy, and robustness. By continuously monitoring and adjusting the output, closed loop systems can compensate for disturbances or changes in the system, resulting in a more reliable and consistent performance.

4. What are the components of a closed loop system?

A closed loop system typically consists of a sensor, a controller, and an actuator. The sensor measures the output or response of the system, the controller compares the output to the setpoint and generates a control signal, and the actuator adjusts the input or control signal to achieve the desired output.

5. What is the difference between open loop and closed loop systems?

The main difference between open loop and closed loop systems is that open loop systems do not have a feedback loop, meaning the output is not monitored or used to adjust the input. This makes open loop systems more susceptible to disturbances and changes in the system, resulting in less accurate and reliable performance compared to closed loop systems.

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