Two Step functions in Different Times , or reset a subsystem block
조회 수: 4 (최근 30일)
이전 댓글 표시
I have a simple model with two Step functions , one enabled subsystem. one step is outside subsystem with a value of 1, and another step is inside the subsystem with value 1. I am monitoring both steps in scope. When i run simulation output becomes 1 at 1 sec in both steps. But I need to do that after first step executes in 1 seconds , the second step inside the block should execute so the output from 2nd step will be 2 secs delayed. (why the both steps execute at the same time , even in enabled-subsystem )
댓글 수: 1
Stephen23
2015년 5월 28일
Here is the text of the original question, just in case Safiya decides to delete the text of this question too (like this one):
I have a simple model with two Step functions , one enabled subsystem. one step is outside subsystem with a value of 1, and another step is inside the subsystem with value 1. I am monitoring both steps in scope. When i run simulation output becomes 1 at 1 sec in both steps. But I need to do that after first step executes in 1 seconds , the second step inside the block should execute so the output from 2nd step will be 2 secs delayed. (why the both steps execute at the same time , even in enabled-subsystem )
채택된 답변
Shiva Arun Kumar
2012년 2월 15일
The step time parameter is with reference to the simulation time and not from the time the subsystem is enabled.
For example if you change the step time for source (S1) outside the subsystem to 2sec and retain the step time for the source (S2) within the subsystem at 1 sec you will notice that both signals will transition to 1 at 2 sec.
Similarly if you make the step time of S1 to be 1 and S2 as 2 you will see that S2 will transition to a value of 1 at 2 sec even though the subsystem has been enable at 1 sec. (notice it will not transition to 1 at 3 sec either)
Hope that helps,
댓글 수: 3
Shiva Arun Kumar
2012년 2월 16일
Hi Haider,
The solution would depend on what you are trying to model in your system and the configuration. For example, if I assume you want the input within your subsystem to transition to 1, one time step after it has been enabled and assuming your sample time is 1, the easiest solution I can think of is to not use a step source within the subsystem. Rather click on the Enable block in your subsystem and check show outport. Connect this outport to delay. This should give the desired result (Assuming that is what you want).
Hope that helps.
추가 답변 (1개)
Kaustubha Govind
2012년 2월 15일
Perhaps your control signal to the Enabled Subsystem enables it immediately? Make sure that the control signal is enabled only after 2 secs.
참고 항목
카테고리
Help Center 및 File Exchange에서 Schedule Model Components에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!