Blog for students taking ECEN5807 Modeling and Control of Power Electronics, ECEE Department, University of Colorado at Boulder, Spring 2013
Saturday, January 19, 2013
Open loop check option
When we check "Open loop check options" for the output node in Simulink, what does the "Open loop check options" function do?
Because it is not checked in "syncbuck_OL" simulation, but it checked in "syncbuck_CL".
Jin, If I understand your question correctly, you are asking about the x placed before the insertion point block at the y node and why it is not present in the open-loop model. I think the option to check open-loop tells Simulink to linearize the model in open-loop, breaking the feedback path, while keeping the feedback path closed for calculations such as transient analysis. Since the syncbuck_OL model has no feedback loop we don't need to check the open-loop option because there is no loop to break. This is described in pgs. 18,19 of the Matlab/Simulink notes posted to the course website. - KT
Jin,
ReplyDeleteIf I understand your question correctly, you are asking about the x placed before the insertion point block at the y node and why it is not present in the open-loop model. I think the option to check open-loop tells Simulink to linearize the model in open-loop, breaking the feedback path, while keeping the feedback path closed for calculations such as transient analysis. Since the syncbuck_OL model has no feedback loop we don't need to check the open-loop option because there is no loop to break. This is described in pgs. 18,19 of the Matlab/Simulink notes posted to the course website.
- KT
Keith's comment is correct.
ReplyDelete