WOLFRAM SYSTEMMODELER

MathBoolean

Library of Boolean mathematical functions as input/output blocks

Package Contents

MultiSwitch

Set Boolean expression that is associated with the first active input signal

And

Logical 'and': y = u[1] and u[2] and ... and u[nu]

Or

Logical 'or': y = u[1] or u[2] or ... or u[nu]

Xor

Logical 'xor': y = oneTrue(u) (y is true, if exactly one element of u is true, otherwise it is false)

Nand

Logical 'nand': y = not ( u[1] and u[2] and ... and u[nu] )

Nor

Logical 'nor': y = not ( u[1] or u[2] or ... or u[nu] )

Not

Logical 'not': y = not u

RisingEdge

Output y is true, if the input u has a rising edge, otherwise it is false (y = edge(u))

FallingEdge

Output y is true, if the input u has a falling edge, otherwise it is false (y = edge(not u))

ChangingEdge

Output y is true, if the input u has either a rising or a falling edge and otherwise it is false (y=change(u))

OnDelay

Delay a rising edge of the input, but do not delay a falling edge.

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This package contains basic mathematical operations on Boolean signals.

The new features are:

  • If useful, blocks may have an arbitrary number of inputs (e.g., "And" block with 2,3,4,... Boolean inputs). This is based on the "connectorSizing" annotation which allows a tool to conveniently handle vectors of connectors.
  • The blocks are smaller in size, so that the diagram area is better utilized for trivial blocks such as "And" or "Or".

Wolfram Language

In[1]:=
SystemModel["Modelica.Blocks.MathBoolean"]
Out[1]:=