maximum number of differential state derivatves

[stuart]

Hello,
Many thanks for ACADO.
As I am receiving the error below, I would like to know the maximum number of differential states.
Thank you,
Stuart

[ACADO] Error: There are to many diff. state derivatives
  Code: (RET_TO_MANY_DIFFERENTIAL_STATE_DERIVATIVES) 
  File: /home/stuart/Downloads/ACADOtoolkit/acado/integrator/integrator_bdf.cpp
  Line: 122

[Rien Quirynen]

Hi there,

You are getting the error "too many differential state derivatives" NOT because you have too many differential states defined.. but because your set of differential equations is ill-defined, you namely seem to have more unknowns (differential state derivatives and algebraic variables) than equations so you should probably check the amount of states + algebraic variables versus the amount of equations once more.

Best,
Rien

[stuart]

Rien,
This helped me sort out the issue.
Many thanks!
Stuart