## Search found 26 matches

Thu Sep 22, 2011 11:04 am
Forum: OpenSim
Topic: Type of coordinates
Replies: 2
Views: 445

### Re: Type of coordinates

Thanks!

Just one more question...the Kinematics analysis returns the angular velocities and angular accelerations, with respect to coordinates,right?
Thu Sep 15, 2011 6:31 am
Forum: OpenSim
Topic: Inverse kinematics results
Replies: 12
Views: 2681

### Re: Inverse kinematics results

Actually I did specified "Jacobian" optimizer....I'll try to run it all over again with the "ipopt" optimizer, and hope it works right now!So, you said Jacobian was the faster optimizer, and it took an hour to run the analysis, how long would it take with the "ipopt"??

Thanks a lot for you help!
Wed Sep 14, 2011 8:29 am
Forum: OpenSim
Topic: Inverse kinematics results
Replies: 12
Views: 2681

### Re: Inverse kinematics results

I'm using OpenSim 2.2.1, and specifying the bound ins XML file, but I've had in mind that the values are in radians! As for the Optimizer, which ones did no respect the bounds?!

One more question, can you tell me what is the sing convention for moments of force?

Thanks!
Tue Sep 13, 2011 9:31 am
Forum: OpenSim
Topic: Inverse kinematics results
Replies: 12
Views: 2681

### Re: Inverse kinematics results

That explanation works in this case...but I have other situation where the same happens, like, the angle is supposed to be 130ยบ, but what appear in the motion file is around 535
Tue Sep 13, 2011 6:30 am
Forum: OpenSim
Topic: Inverse kinematics results
Replies: 12
Views: 2681

### Re: Inverse kinematics results

Thanks!

And what about the other coordinates?For instance, I've a coordinated define "shoulder_rot_l" whose bound values are [-90,90], but in the motion file I've obtained from IK its values reaches -430...
And I don't understand what's happening...
Mon Sep 12, 2011 7:52 am
Forum: OpenSim
Topic: Inverse kinematics results
Replies: 12
Views: 2681

### Inverse kinematics results

Hi everyone,

In output file from Inverse Kinematics file, the coordinates "*_tx" ,"*_ty" "*_tz" are expressed in which unit??

Thanks,

Marta
Wed Sep 07, 2011 2:31 pm
Forum: OpenSim
Topic: Type of coordinates
Replies: 2
Views: 445

### Type of coordinates

Hi everyone!

Can someone tell me what type of coordinates does the OpenSim uses?!I'm writing my thesis and would really appreciate if someone could tell me this!I was reading the theory manual from SimBody but couldn't figure it out!

Thanks,

Marta
Sun Sep 04, 2011 10:28 am
Forum: OpenSim
Topic: External load on hand
Replies: 20
Views: 3981

### Re: External load on hand

I'm using OpenSim2.2.1!I cant upload it here,can you send me your e-mail,please?
Thanks
Sun Sep 04, 2011 9:43 am
Forum: OpenSim
Topic: External load on hand
Replies: 20
Views: 3981

### Re: External load on hand

Still nothing!
I've created the .xml file as you said, performed ID and then Analyze tool to Report forces, and still only two external forces appear in the Force Reporter, dont know what else to do!!

Any idea how to solve it?Can I send you my .mot file so you can see if something is no right
Sun Sep 04, 2011 6:40 am
Forum: OpenSim
Topic: External load on hand
Replies: 20
Views: 3981

### Re: External load on hand

I've tried that, and nothing!
I'll try it again, and see how it goes!

Thanks