Package Modelica.​Blocks.​Math
Library of Real mathematical functions as input/output blocks

Information

This package contains basic mathematical operations, such as summation and multiplication, and basic mathematical functions, such as sqrt and sin, as input/output blocks. All blocks of this library can be either connected with continuous blocks or with sampled-data blocks.

Extends from Modelica.​Icons.​Package (Icon for standard packages).

Package Contents

Block Modelica.​Blocks.​Math.​InverseBlockConstraints
Construct inverse model by requiring that two inputs and two outputs are identical

Information

Exchange input and output signals of a block, i.e., the previous block inputs become block outputs and the previous block outputs become block inputs. This block is used to construct inverse models. Its usage is demonstrated in example: Modelica.Blocks.Examples.InverseModel.

Note, if a block shall be inverted that has several input and output blocks, then this can be easily achieved by using a vector of InverseBlockConstraints instances:

   InverseBlockConstraint invert[3];  // Block to be inverted has 3 input signals

Connectors

Block Modelica.​Blocks.​Math.​Gain
Output the product of a gain value with the input signal

Information

This block computes output y as product of gain k with the input u:

    y = k * u;

Parameters

Connectors

Block Modelica.​Blocks.​Math.​MatrixGain
Output the product of a gain matrix with the input signal vector

Information

This blocks computes output vector y as product of the gain matrix K with the input signal vector u:

    y = K * u;

Example:

   parameter: K = [0.12 2; 3 1.5]

   results in the following equations:

     | y[1] |     | 0.12  2.00 |   | u[1] |
     |      |  =  |            | * |      |
     | y[2] |     | 3.00  1.50 |   | u[2] |

Extends from Modelica.​Blocks.​Interfaces.​MIMO (Multiple Input Multiple Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​MultiSum
Sum of Reals: y = k[1]*u[1] + k[2]*u[2] + ... + k[n]*u[n]

Information

This blocks computes the scalar Real output "y" as sum of the elements of the Real input signal vector u:

y = k[1]*u[1] + k[2]*u[2] + ... k[N]*u[N];

The input connector is a vector of Real input signals. When a connection line is drawn, the dimension of the input vector is enlarged by one and the connection is automatically connected to this new free index (thanks to the connectorSizing annotation).

The usage is demonstrated, e.g., in example Modelica.Blocks.Examples.RealNetwork1.

If no connection to the input connector "u" is present, the output is set to zero: y=0.

Extends from Modelica.​Blocks.​Interfaces.​PartialRealMISO (Partial block with a RealVectorInput and a RealOutput signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​MultiProduct
Product of Reals: y = u[1]*u[2]* ... *u[n]

Information

This blocks computes the scalar Real output "y" as product of the elements of the Real input signal vector u:

y = u[1]*u[2]* ... *u[N];

The input connector is a vector of Real input signals. When a connection line is drawn, the dimension of the input vector is enlarged by one and the connection is automatically connected to this new free index (thanks to the connectorSizing annotation).

The usage is demonstrated, e.g., in example Modelica.Blocks.Examples.RealNetwork1.

If no connection to the input connector "u" is present, the output is set to zero: y=0.

Extends from Modelica.​Blocks.​Interfaces.​PartialRealMISO (Partial block with a RealVectorInput and a RealOutput signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​MultiSwitch
Set Real expression that is associated with the first active input signal

Information

This block has a vector of Boolean input signals u[nu] and a vector of (time varying) Real expressions expr[nu]. The output signal y is set to expr[i], if i is the first element in the input vector u that is true. If all input signals are false, y is set to parameter "y_default".

  // Conceptual equation (not valid Modelica)
  i = 'first element of u[:] that is true';
  y = if i==0 then y_default else expr[i];

The input connector is a vector of Boolean input signals. When a connection line is drawn, the dimension of the input vector is enlarged by one and the connection is automatically connected to this new free index (thanks to the connectorSizing annotation).

The usage is demonstrated, e.g., in example Modelica.Blocks.Examples.RealNetwork1.

Parameters

Inputs

Connectors

Block Modelica.​Blocks.​Math.​Sum
Output the sum of the elements of the input vector

Information

This blocks computes output y as sum of the elements of the input signal vector u:

    y = u[1] + u[2] + ...;

Example:

     parameter:   nin = 3;

  results in the following equations:

     y = u[1] + u[2] + u[3];

Extends from Modelica.​Blocks.​Interfaces.​MISO (Multiple Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Feedback
Output difference between commanded and feedback input

Information

This blocks computes output y as difference of the commanded input u1 and the feedback input u2:

    y = u1 - u2;

Example:

     parameter:   n = 2

  results in the following equations:

     y = u1 - u2

Connectors

Block Modelica.​Blocks.​Math.​Add
Output the sum of the two inputs

Information

This blocks computes output y as sum of the two input signals u1 and u2:

    y = k1*u1 + k2*u2;

Example:

     parameter:   k1= +2, k2= -3

  results in the following equations:

     y = 2 * u1 - 3 * u2

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Add3
Output the sum of the three inputs

Information

This blocks computes output y as sum of the three input signals u1, u2 and u3:

    y = k1*u1 + k2*u2 + k3*u3;

Example:

     parameter:   k1= +2, k2= -3, k3=1;

  results in the following equations:

     y = 2 * u1 - 3 * u2 + u3;

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Product
Output product of the two inputs

Information

This blocks computes the output y as product of the two inputs u1 and u2:

    y = u1 * u2;

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Division
Output first input divided by second input

Information

This block computes the output y by dividing the two inputs u1 and u2:

    y = u1 / u2;

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Abs
Output the absolute value of the input

Information

This blocks computes the output y as absolute value of the input u:

    y = abs( u );

The Boolean parameter generateEvent decides whether Events are generated at zero crossing (Modelica specification before 3) or not.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Sign
Output the sign of the input

Information

This blocks computes the output y as sign of the input u:

         1  if u > 0
    y =  0  if u == 0
        -1  if u < 0

The Boolean parameter generateEvent decides whether Events are generated at zero crossing (Modelica specification before 3) or not.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Sqrt
Output the square root of the input (input >= 0 required)

Information

This blocks computes the output y as square root of the input u:

    y = sqrt( u );

The input shall be zero or positive. Otherwise an error occurs.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Sin
Output the sine of the input

Information

This blocks computes the output y as sine of the input u:

    y = sin( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Cos
Output the cosine of the input

Information

This blocks computes the output y as cos of the input u:

    y = cos( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Tan
Output the tangent of the input

Information

This blocks computes the output y as tan of the input u:

    y = tan( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Asin
Output the arc sine of the input

Information

This blocks computes the output y as the sine-inverse of the input u:

    y = asin( u );

The absolute value of the input u need to be less or equal to one (abs( u ) <= 1). Otherwise an error occurs.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Acos
Output the arc cosine of the input

Information

This blocks computes the output y as the cosine-inverse of the input u:

    y = acos( u );

The absolute value of the input u need to be less or equal to one (abs( u ) <= 1). Otherwise an error occurs.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Atan
Output the arc tangent of the input

Information

This blocks computes the output y as the tangent-inverse of the input u:

    y= atan( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Atan2
Output atan(u1/u2) of the inputs u1 and u2

Information

This blocks computes the output y as the tangent-inverse of the input u1 divided by input u2:

    y = atan2( u1, u2 );

u1 and u2 shall not be zero at the same time instant. Atan2 uses the sign of u1 and u2 in order to construct the solution in the range -180 deg ≤ y ≤ 180 deg, whereas block Atan gives a solution in the range -90 deg ≤ y ≤ 90 deg.

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Sinh
Output the hyperbolic sine of the input

Information

This blocks computes the output y as the hyperbolic sine of the input u:

    y = sinh( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Cosh
Output the hyperbolic cosine of the input

Information

This blocks computes the output y as the hyperbolic cosine of the input u:

    y = cosh( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Tanh
Output the hyperbolic tangent of the input

Information

This blocks computes the output y as the hyperbolic tangent of the input u:

    y = tanh( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Exp
Output the exponential (base e) of the input

Information

This blocks computes the output y as the exponential (of base e) of the input u:

    y = exp( u );

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Power
Output the power to a base of the input

Information

This blocks computes the output y as the power to the parameter base of the input u. If the boolean parameter useExp is true, the output is determined by:

    y = exp ( u * log (base) )

otherwise:

    y = base ^ u;

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Log
Output the logarithm (default base e) of the input (input > 0 required)

Information

This blocks computes the output y as the logarithm to the parameter base of the input u:

    y = log( u ) / log( base );

An error occurs if the input u is zero or negative.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Log10
Output the base 10 logarithm of the input (input > 0 required)

Information

This blocks computes the output y as the base 10 logarithm of the input u:

    y = log10( u );

An error occurs if the input u is zero or negative.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​WrapAngle
Wrap angle to interval ]-pi,pi] or [0,2*pi[

Information

This blocks wraps the input angle into the interval ]-pi,pi], if positiveRange == false. Otherwise the input angle u is wrapped to the interval [0,2*pi[.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RealToInteger
Convert Real to Integer signal

Information

This block computes the output y as nearest integer value of the input u:

    y = integer( floor( u + 0.5 ) )  for  u > 0;
    y = integer( ceil ( u - 0.5 ) )  for  u < 0;

Extends from Modelica.​Blocks.​Icons.​IntegerBlock (Basic graphical layout of Integer block).

Connectors

Block Modelica.​Blocks.​Math.​IntegerToReal
Convert Integer to Real signals

Information

This block computes the output y as Real equivalent of the Integer input u:

    y = u;

where u is of Integer and y of Real type.

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Connectors

Block Modelica.​Blocks.​Math.​BooleanToReal
Convert Boolean to Real signal

Information

This block computes the output y as Real equivalent of the Boolean input u:

    y = if u then realTrue else realFalse;

where u is of Boolean and y of Real type, and realTrue and realFalse are parameters.

Extends from Modelica.​Blocks.​Interfaces.​partialBooleanSI (Partial block with 1 input Boolean signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​BooleanToInteger
Convert Boolean to Integer signal

Information

This block computes the output y as Integer equivalent of the Boolean input u:

    y = if u then integerTrue else integerFalse;

where u is of Boolean and y of Integer type, and integerTrue and integerFalse are parameters.

Extends from Modelica.​Blocks.​Interfaces.​partialBooleanSI (Partial block with 1 input Boolean signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RealToBoolean
Convert Real to Boolean signal

Information

This block computes the Boolean output y from the Real input u by the equation:

    y = u ≥ threshold;

where threshold is a parameter.

Extends from Modelica.​Blocks.​Interfaces.​partialBooleanSO (Partial block with 1 output Boolean signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​IntegerToBoolean
Convert Integer to Boolean signal

Information

This block computes the Boolean output y from the Integer input u by the equation:

    y = u ≥ threshold;

where threshold is a parameter.

Extends from Modelica.​Blocks.​Interfaces.​partialBooleanSO (Partial block with 1 output Boolean signal).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RectangularToPolar
Convert rectangular coordinates to polar coordinates

Information

The input values of this block are the rectangular components u_re and u_im of a phasor in two dimensions. This block calculates the length y_abs and the angle y_arg of the polar representation of this phasor.

  y_abs = abs(u_re + j*u_im) = sqrt( u_re2 + u_im2 )
  y_arg = arg(u_re + j*u_im) = atan2(u_im, u_re)

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Connectors

Block Modelica.​Blocks.​Math.​PolarToRectangular
Convert polar coordinates to rectangular coordinates

Information

The input values of this block are the polar components uabs and uarg of a phasor. This block calculates the components y_re and y_im of the rectangular representation of this phasor.

   y_re = u_abs * cos( u_arg )
   y_im = u_abs * sin( u_arg )

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Connectors

Block Modelica.​Blocks.​Math.​Mean
Calculate mean over period 1/f

Information

This block calculates the mean of the input signal u over the given period 1/f:

1 T
- ∫ u(t) dt
T 0

Note: The output is updated after each period defined by 1/f.

If parameter yGreaterOrEqualZero in the Advanced tab is true (default = false), then the modeller provides the information that the mean of the input signal is guaranteed to be ≥ 0 for the exact solution. However, due to inaccuracies in the numerical integration scheme, the output might be slightly negative. If this parameter is set to true, then the output is explicitly set to 0.0, if the mean value results in a negative value.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RectifiedMean
Calculate rectified mean over period 1/f

Information

This block calculates the rectified mean of the input signal u over the given period 1/f, using the mean block.

Note: The output is updated after each period defined by 1/f.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​ContinuousMean
Calculates the empirical expectation (mean) value of its input signal

Information

This block continuously calculates the mean value of its input signal. It uses the function:

    integral( u over time)
y = ----------------------
      time - startTime

This can be used to determine the empirical expectation value of a random signal, such as generated by the Noise blocks.

The parameter t_eps is used to guard against division by zero (the mean value computation starts at <simulation start time> + t_eps and before that time instant y = u).

See also the Mean block for a sampled implementation.

This block is demonstrated in the examples UniformNoiseProperties and NormalNoiseProperties.

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RootMeanSquare
Calculate root mean square over period 1/f

Information

This block calculates the root mean square of the input signal u over the given period 1/f, using the mean block.

Note: The output is updated after each period defined by 1/f.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Variance
Calculates the empirical variance of its input signal

Information

This block calculates the empirical variance of its input signal. It is based on the formula (but implemented in a more reliable numerical way):

y = mean(  (u - mean(u))^2  )

The parameter t_eps is used to guard against division by zero (the variance computation starts at <simulation start time> + t_eps and before that time instant y = 0).

The variance of a signal is also equal to its mean power.

This block is demonstrated in the examples UniformNoiseProperties and NormalNoiseProperties.

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​StandardDeviation
Calculates the empirical standard deviation of its input signal

Information

This block calculates the standard deviation of its input signal. The standard deviation is the square root of the signal's variance:

y = sqrt( variance(u) )

The Variance block is used to calculate variance(u).

The parameter t_eps is used to guard against division by zero (the computation of the standard deviation starts at <simulation start time> + t_eps and before that time instant y = 0).

This block is demonstrated in the examples UniformNoiseProperties and NormalNoiseProperties.

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Harmonic
Calculate harmonic over period 1/f

Information

This block calculates the root mean square and the phase angle of a single harmonic k of the input signal u over the given period 1/f, using the mean block.

Note: The output is updated after each period defined by 1/f.

Note:
The harmonic is defined by √2 rms cos(k 2 π f t - arg) if useConjugateComplex=false (default)
The harmonic is defined by √2 rms cos(k 2 π f t + arg) if useConjugateComplex=true

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​TotalHarmonicDistortion
Output the total harmonic distortion (THD)

Information

This block determines the total harmonic distortion (THD) over the given period 1/f. Consider that the input u consists of harmonic RMS components U1, U2, U3, etc. The total RMS component is then determined by:

The calculation of the total harmonic distortion is based on the parameter useFirstHarmonic. The default value useFirstHarmonic = true represents the standard THD calculation used in electrical engineering. The non-default value useFirstHarmonic = false calculates the THD typically used for the assessment of audio signals.

If useFirstHarmonic = true, the total higher harmonic content (harmonic order numbers > 1) refers to the RMS value of the fundamental wave:

If useFirstHarmonic = false, the total higher harmonic content (harmonic order numbers > 1) refers to the total RMS:

In case of a zero input signal or within the first period of calculation, the boolean output signal valid becomes false to indicate that the calculation result is not valid. Valid calculations are indicated by valid = true.

Extends from Modelica.​Blocks.​Interfaces.​SISO (Single Input Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​RealFFT
Sampling and FFT of input u

Information

This block samples the input signal, calculates the Fast Fourier Transform by function Math.realFFT, and (when simulation terminates) writes the output to result file resultFileName by function Math.realFFTwriteToFile.

The number of sampling points as well as the samplePeriod is calculated from desired maximum frequency f_max and frequency resolution f_res.

Note

The user has to take care that enough points can be sampled before the simulation ends: startTime + (ns - 1)*samplePeriod <= stopTime.

The result file is written as mat, first column = frequency, second column = amplitudes, third column = phases. The frequency points are separated by rows with amplitude and phase = 0, so one can plot the result directly as frequency lines.

Extends from Modelica.​Blocks.​Interfaces.​DiscreteBlock (Base class of discrete control blocks).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Pythagoras
Determine the hypotenuse or leg of a right triangle

Information

This block determines the hypotenuse y = sqrt(u1^2 + u2^2) if the boolean parameter u1IsHyotenuse = false. In this case the two inputs u1 and u2 are interpreted as the legs of a right triangle and the boolean output valid is always equal to true.

If u1IsHyotenuse = true, input u1 is interpreted as hypotenuse and u2 is one of the two legs of a right triangle. Then, the other of the two legs of the right triangle is the output, determined by y = sqrt(u1^2 - u2^2), if u1^2 - u2^2 ≥ 0; in this case the boolean output valid is equal to true. In case of u1^2 - u2^2 < 0, the output y = 0 and valid is set to false.

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Max
Pass through the largest signal

Information

This block computes the output y as maximum of the two Real inputs u1 and u2:

    y = max ( u1 , u2 );

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​Min
Pass through the smallest signal

Information

This block computes the output y as minimum of the two Real inputs u1 and u2:

    y = min ( u1 , u2 );

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Connectors

Block Modelica.​Blocks.​Math.​MinMax
Output the minimum and the maximum element of the input vector

Information

Determines the minimum and maximum element of the input vector and provide both values as output.

Extends from Modelica.​Blocks.​Icons.​Block (Basic graphical layout of input/output block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​LinearDependency
Output a linear combination of the two inputs

Information

Determine the linear combination of the two inputs: y = y0*(1 + k1*u1 + k2*u2)

Note, for y0=0 the output is always zero.

To improve the implementation, the formula will be changed (non-backwards compatible) in the future: y = y0 + k1*u1 + k2*u2

Extends from Modelica.​Blocks.​Interfaces.​SI2SO (2 Single Input / 1 Single Output continuous control block).

Parameters

Connectors

Block Modelica.​Blocks.​Math.​Edge
Indicates rising edge of Boolean signal

Information

This block sets the Boolean output y to true, when the Boolean input u shows a rising edge:

    y = edge( u );

Extends from Modelica.​Blocks.​Interfaces.​BooleanSISO (Single Input Single Output control block with signals of type Boolean).

Connectors

Block Modelica.​Blocks.​Math.​BooleanChange
Indicates Boolean signal changing

Information

This block sets the Boolean output y to true, when the Boolean input u shows a rising or falling edge, i.e., when the signal changes:

    y = change( u );

Extends from Modelica.​Blocks.​Interfaces.​BooleanSISO (Single Input Single Output control block with signals of type Boolean).

Connectors

Block Modelica.​Blocks.​Math.​IntegerChange
Indicates integer signal changing

Information

This block sets the Boolean output y to true, when the Integer input u changes:

    y = change( u );

Extends from Modelica.​Blocks.​Interfaces.​IntegerSIBooleanSO (Integer Input Boolean Output continuous control block).

Connectors