Mean

Compute mean value of signal

  • Library:
  • Simscape / Electrical / Specialized Power Systems / Fundamental Blocks / Measurements / Additional Measurements

Description

The Mean block computes the mean value of the input signal. The mean value is computed over a running average window of one cycle of the specified fundamental frequency:

Mean(f(t))=1T(tT)tf(t)dtf(t):input signal, T = 1/fundamental frequency

As this block uses a running average window, one cycle of simulation must complete before the output gives the correct value. For the first cycle of simulation, the output is held constant to the specified initial input value.

Characteristics

Sample Time Specified in the Sample Time parameter
Continuous if Sample Time = 0
Scalar ExpansionYes, of the parameters
DimensionalizedYes

Ports

Input

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The input signal for which the block computes the mean value, specified as a Simulink signal.

Output

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The mean value of the input signal, returned as a Simulink signal.

Parameters

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Specify the fundamental frequency, in hertz. This value determines the period (1/F) of the running average window.

Specify the input value for the first cycle of simulation.

Specify the sample time of the block, in seconds. Set to 0 to implement a continuous block.

Examples

The power_Mean model uses the Mean block to determine the mean value of a DC signal containing a 12th harmonic ripple.

The model sample time is parameterized by the Ts variable set to a default value of 50e-6 s. Set Ts to 0 in the command window to simulate the model in continuous mode.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Introduced in R2013a