RMS Value
Purpose
Calculate root mean square (RMS) value of input signal
Library
Control / Filters
Description
This block calculates the RMS value of a periodic input signal. The sample time, fundamental frequency and the initial condition can be specified.
Example Model
See the example model “Rms Value”.
Find it in PLECS under Help > PLECS Documentation > List of Example Models.
Parameters
- Initial condition
The initial condition describes the input signal before simulation start. If the input is a scalar signal, the parameter must be a scalar too. If input and output are vectorized signals, a vector can be used. The number of elements in the vector must match the number of input signals. The default value of this parameter is
0.- Sample time
A scalar specifying the sampling period or a two-element vector specifying the sampling period and offset, in seconds \((\mathrm{s})\). See also the Discrete-Periodic sample time type in Sample Times. If a sample time of
0is specified, a continuous implementation based on the Moving Average block is active. The Discrete-Periodic implementation can potentially force a variable-step solver to take small integration steps. This may slow down the simulation. The default value of this parameter is0.- Fundamental frequency
The fundamental frequency of the periodic input signal in hertz \((\mathrm{Hz})\).