Scope in Simulink does not display waveform correctly

2014 12 2
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更新时间：2017 8 10
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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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 采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2014-12-2
编辑：Azzi Abdelmalek 2014-12-2

3 个投票

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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