Dahl Friction Model

Hello Everyone,

I have found a simulink model for Dahl friction but am having troubles getting it to work. I found this in a paper located at: http://dspace.mit.edu/bitstream/handle/1721.1/32826/57615794.pdf?sequence=1. I have duplicated the simulink model on page 30 of the document and have copied Appendix C into the workspace. If anyone has a solution to get this running and would share it that would be well appreciated.

When I first run it I receive errors for missing variables. I try and correct for these and then get ODE errors:

??? Error using ==> feval Simulink model dahl was called with incorrect number of arguments.

Error in ==> odearguments at 110 f0 = feval(ode,t0,y0,args{:}); % ODE15I sets args{1} to yp0.

Error in ==> ode45 at 173 [neq, tspan, ntspan, next, t0, tfinal, tdir, y0, f0, odeArgs, odeFcn, ...

Thanks for the help in advance.

[vit90]

Hi Questionz,

Did you solve your problem?

[Walter Roberson]

It appears that the current link to the paper is https://dspace.mit.edu/bitstream/handle/1721.1/32826/57615794-MIT.pdf?sequence=2

Answer 1

[Walter Roberson]

Rename your model to a name different than dahl as you are using that for your ode function name.