Dear Jason,
The problem is solved now, I’ve checked the forum after my last post looking for similar problem, and I found something here [url]OC3 blade pitch control problem & its errors].
I’ve changed INTEGER :: CU=6 to 7 (line 47 in SysIVF.f90), and rebuild Adams.dll.
When I run FAST with Test11.fst (without any change). fast works fine.
However, running Test11 with ADAMS solver needed more work to adjust the time step, as the using DT=0.005 (Default in Test11.fst) will generate errors in ADAMS/Solver and simulation will stop due to some matrix singularity errors. I’ve set the time step DT=0.001, in order to make a full simulation without any problems (I hope so).
I’ve checked the *.out file for the message you mentioned regarding the pitch controller, and I could find it.
Anyway. here are the new output of RotSpeed, Blade pitch 1 angle, and blade root moments from FAST and ADAMS.
IT is clear that ADAMS and FAST show some similarities in the RotSpeed, and Blade pitch angle. Which sounds to be good.
However, I’ve made some more check regarding the RootMzb1. If I changed the “Time to begin tabular output” TStart to 6 seconds (default is 10), and I get some strange results. (In the following figure, DT=0.0005, same results were obtained for DT=0.001)
I’m not sure if the results are from ADAMS, because of the more detailed model, or a kind of mathematical calculation error.
I’ve very happy to have ADAMS working after spending too much time to solve these problem…
Thanks you Jason and Bonnie for all the support, and Thanks to all the others who worked to achieve such nice tools.
Best Regards
Rannam Chaaban.