.Modelica.Blocks.Nonlinear.VariableLimiter

Information

The Limiter block passes its input signal as output signal as long as the input is within the upper and lower limits specified by the two additional inputs limit1 and limit2. If this is not the case, the corresponding limit is passed as output.

The parameter homotopyType in the Advanced tab specifies the simplified behaviour if homotopy-based initialization is used:

• NoHomotopy: the actual expression with limits is used
• Linear: a linear behaviour y = u is assumed (default option)
• Fixed: it is assumed that the output is fixed at the value ySimplified

If it is known a priori in which region the input signal will be located, this option can help a lot by removing one strong nonlinearity from the initialization problem.