Non zero initial value second order system simulink
显示 更早的评论
Hi all,
I am simulating a second order system with the transfer function component in simulink.
This component is fed a step signal, with initial value one and step amplitude -1. That is to say the step decreases from 1 to 0 instead of the usual 0 to 1.
The output I get from the transfer function oscillates twice : once at initial time and once at the stepping time.
The second oscillation is exactly what I want. But I don't understand the presence of the first one. It's as if at the initial time, the source signal is not fixed at 1 but stepping from zero to 1 instantly.
How can I force that input source signal to have an actual initial value of one ?
Thank you for your answers.
回答（1 个）
Mandar Patwardhan
2017-6-27
0 个投票
Go to the configuration parameters and consider reducing the step size to a smaller value and check if you still see the initial value stepping from zero to 1 instantly.
类别
在 帮助中心 和 File Exchange 中查找有关 Model Verification 的更多信息
2017-6-27
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
