Scope in Simulink does not display waveform correctly

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Michail
Michail 2014-12-2
评论： Amira benAmeur 2017-8-10
Hello!
In Simulink I implement a very simple circuit with an AC voltage source (110kV,50Hz) in series with a Resistance R=1 Ohm and PowerGUI set to Discrete (Ts=5e-5s). I use also a "voltage measurement" block and a Scope to display the voltage waveform of the source. When I set the "Stop simulation time" to 0.2s the waveform is displayed from 0 to 0.2s as it was expected but when I set it to 0.4s it starts from around 0.15s (???). The same behavior occurs when I just use "Sine wave function" block with a Scope. There is something wrong with the scope because when I plot through the workspace everything is ok.
I would be grateful if somebody has a solution on this issue and could share it!
Regards, Michail

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Azzi Abdelmalek
Azzi Abdelmalek 2014-12-2
编辑：Azzi Abdelmalek 2014-12-2
I suppose your sample time is very small, in the scope parameters-history uncheck limit data point to last
http://www.mathworks.com/help/simulink/slref/scope.html

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Alireza Babaloo
Alireza Babaloo 2016-2-3
I had the same problem thanks.

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