Transient Tab Advanced Parameters
Below are descriptions of the advanced parameter options in the Transient tab of the Simulation Settings dialog.
The following common options are available for all integrators:
| Option | Description |
|---|---|
| Maximum initial step size | The maximum initial step size. |
| Minimum step size | Defines the minimum step size the integrator is allowed to take. |
| Maximum order | Specifies the maximum order that the integrator is to take. |
| Velocity tolerance fact | The factor that multiplies integr_tol to yield the error tolerance for velocity states. |
| Implicit diff tolerance | Defines the accuracy to which implicit differential equations, such as Control_Diff equations with the is_implicit = "TRUE", are to be satisfied. |
The following options are specific to DSTIFF:
| Option | Description |
|---|---|
| DAE index | The index of the DAE formulation. Options available are: 3 or 1. |
| DAE corrector max iteration | The maximum number of iterations that the corrector is allowed to take to achieve convergence. |
| DAE corrector min iteration | The minimum number of iterations that the corrector is allowed to take before it checks for corrector divergence. |
| DAE constraint tolerance | The tolerance on all algebraic constraint equations that the corrector must satisfy at convergence. |
| Jacobian matrix evaluation | This attribute controls the Jacobian matrix evaluation during corrector iterations. |
| Velocity control | The logical flag that controls whether the velocity states are checked for local integration error at each step. This option is only available in the case where the DAE index = 1. |
The following options are specific to VSTIFF/MSTIFF/ABAM:
| Option | Description |
|---|---|
| Constraint tolerance | Defines the accuracy to which the system configuration and motion constraints are to be satisfied at each step. |