Units of simulink simulations

2 次查看(过去 30 天)
I have my dynamical transfer function time constants in minutes. But simulink simulation says its default unit for time is seconds. How can I proceed further.
For sample:
My transfer function: 7/(5s+1). Here 5 is in minutes. And Im designing PID controller for the same. Does the units create any issue in final answers when i run the simulation?


Tanmay Das
Tanmay Das 2021-9-16
The default unit for time is seconds in Simulink. You can get a list of all default units from showunitslist command. Transfer function is nothing but the impulse response of a system converted to laplace domain. Here, in this transfer function, 5*60/7 seconds is the time constant according to you but it is 5/7 seconds according to Simulink. So, the response time of the simulink model will be much faster(60 times) as compared to your actual model. Therefore, it is a good practice to change all the units to the default unit before running the simulation.

更多回答(0 个)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by