Simulink numerical error?
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Hi,
I am using simulink to control a robotic arm.
I am facing a strange problem. When I am running the simulation, there are 2 values which should be equivalent (their expressions are same). When I simout those 2 variables, their errors are in the order for e-4, which my system can't accept.
But when I run the same corresponding code in matlab (.m file), errors are in the order of e-18 or exactly 0.
What does this mean? Should I develop my control system in matlab file itself?
Will attach those 2 files if required.
Thanks in advance.
2 Comments
Kaustubha Govind
on 17 Jun 2011
How are these expressions computed in Simulink (Simulink library blocks, Embedded MATLAB Block, Stateflow, etc.)? If using blocks, do you use the exact same blocks in both code-paths? What are the datatypes of your signals?
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