Mean (Variable Frequency)

(To be removed) Compute mean value of signal

The Specialized Power Systems library will be removed in R2026a. Use the Simscape™ Electrical™ blocks and functions instead. For more information on updating your models, see Upgrade Specialized Power System Models to use Simscape Electrical Blocks.

Library

Simscape / Electrical / Specialized Power Systems / Sensors and Measurements

Description

The Mean (Variable Frequency) block computes the mean value of the signal connected to the second input of the block. The mean value is computed over a running average window of one cycle of the frequency of the signal:

$\begin{array}{l} M e a n (f (t)) = \frac{1}{T} \int_{(t - T)}^{t} f (t) \cdot d t \\ f (t) : input signal, T = 1/ frequency \end{array}$

This block uses a running average window. Therefore, one cycle of simulation must complete before the block outputs the computed mean value. For the first cycle of simulation, the output is held constant to the specified initial value.

Parameters

Initial frequency (Hz): Specify the frequency of the first cycle of simulation. Default is 60.
Minimum frequency (Hz): The minimum frequency value determines the buffer size of the Variable Time Delay block used inside the block to compute the mean value. Default is 45.
Initial input (DC component): Specify the initial value of the input during the first cycle of simulation. Default is 0.
Sample time: Specify the sample time of the block, in seconds. Set to 0 to implement a continuous block. Default is 0.

Inputs and Outputs

Freq: The frequency of the signal.
In: Connects to the signal to be analyzed.
X: The mean value of the signal.

Characteristics

Sample Time	Specified in the Sample Time parameter Continuous if Sample Time = 0
Scalar Expansion	Yes, of the parameters
Dimensionalized	Yes

Version History

Introduced in R2013a