.Modelica.Blocks.Sources

Information

This package contains source components, i.e., blocks which have only output signals. These blocks are used as signal generators for Real, Integer and Boolean signals.

All Real source signals (with the exception of the Constant source) have at least the following two parameters:

The offset parameter is especially useful in order to shift the corresponding source, such that at initial time the system is stationary. To determine the corresponding value of offset, usually requires a trimming calculation.

Contents

Name	Description
RealExpression	Set output signal to a time varying Real expression
IntegerExpression	Set output signal to a time varying Integer expression
BooleanExpression	Set output signal to a time varying Boolean expression
ContinuousClock	Generate current time signal
Constant	Generate constant signal of type Real
Step	Generate step signal of type Real
Ramp	Generate ramp signal
Sine	Generate sine signal
Cosine	Generate cosine signal
SineVariableFrequencyAndAmplitude	Generate sine signal with variable frequency and amplitude
CosineVariableFrequencyAndAmplitude	Generate cosine signal with variable frequency and amplitude
Sinc	Generate sinc signal
ExpSine	Generate exponentially damped sine signal
Exponentials	Generate a rising and falling exponential signal
Pulse	Generate pulse signal of type Real
SawTooth	Generate saw tooth signal
Trapezoid	Generate trapezoidal signal of type Real
LogFrequencySweep	Logarithmic frequency sweep
KinematicPTP	Move as fast as possible along a distance within given kinematic constraints
KinematicPTP2	Move as fast as possible from start to end position within given kinematic constraints with output signals q, qd=der(q), qdd=der(qd)
TimeTable	Generate a (possibly discontinuous) signal by linear interpolation in a table
CombiTimeTable	Table look-up with respect to time and linear/periodic extrapolation methods (data from matrix/file)
BooleanConstant	Generate constant signal of type Boolean
BooleanStep	Generate step signal of type Boolean
BooleanPulse	Generate pulse signal of type Boolean
SampleTrigger	Generate sample trigger signal
BooleanTable	Generate a Boolean output signal based on a vector of time instants
RadioButtonSource	Boolean signal source that mimics a radio button
IntegerConstant	Generate constant signal of type Integer
IntegerStep	Generate step signal of type Integer
IntegerTable	Generate an Integer output signal based on a table matrix with [time, yi] values

Revisions

• October 21, 2002 by Martin Otter and Christian Schweiger:
  Integer sources added. Step, TimeTable and BooleanStep slightly changed.
• Nov. 8, 1999 by Christoph Clauß, Andre.Schneider@eas.iis.fraunhofer.de, Martin Otter:
  New sources: Exponentials, TimeTable. Trapezoid slightly enhanced (nperiod=-1 is an infinite number of periods).
• Oct. 31, 1999 by Martin Otter:
  Christoph Clauß, Andre.Schneider@eas.iis.fraunhofer.de, All sources vectorized. New sources: ExpSine, Trapezoid, BooleanConstant, BooleanStep, BooleanPulse, SampleTrigger. Improved documentation, especially detailed description of signals in diagram layer.
• June 29, 1999 by Martin Otter:
  Realized a first version, based on an existing Dymola library of Dieter Moormann and Hilding Elmqvist.