This component generates a forced angular position at  according to an input signal that specifies a reference angle, .

When the exact parameter is true, the reference angle is used as-is. This is only possible if the input signal is defined by a twice-differentiable function.

When the exact parameter is false (the default value), the reference angle is filtered and the second derivative of the filtered curve is used to compute the reference acceleration of the flange. This second derivative is not computed by numerical differentiation but by an appropriate realization of the filter. For filtering, a second-order Bessel filter is used. The critical frequency of the filter (cut-off frequency) is defined by the parameter, . This value should be higher than the essential low frequencies in the signal.

The component equations are

Rotational Motion Drivers

1-D Mechanical Overview

Signal Blocks Overview

The components described in this topic are from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.