Add3

Weighted summation block that adds three scalar inputs with configurable gains.

A component that computes a weighted sum of three real inputs, allowing different gain factors to be applied to each input before summation. The output is calculated using the formula:

$$y=k_1\cdot u_1+k_2\cdot u_2+k_3\cdot u_3$$

where k_1, k_2, and k_3 are user-configurable gain parameters.

Usage

Add3(k1=1.0, k2=1.0, k3=1.0)

Parameters:

Name	Description	Units	Default value
k1	Gain of u1	–	1
k2	Gain of u2	–	1
k3	Gain of u3	–	1

Connectors

• u1 - This connector represents a real signal as an input to a component (RealInput)

• u2 - This connector represents a real signal as an input to a component (RealInput)

• u3 - This connector represents a real signal as an input to a component (RealInput)

• y - This connector represents a real signal as an output from a component (RealOutput)

Behavior

$$\begin{array}{rl}y\left(t\right)& =\mathtt{k}\mathtt{1}\mathtt{u}\mathtt{1}\left(t\right)+\mathtt{k}\mathtt{2}\mathtt{u}\mathtt{2}\left(t\right)+\mathtt{k}\mathtt{3}\mathtt{u}\mathtt{3}\left(t\right)\end{array}$$

Source

# Weighted summation block that adds three scalar inputs with configurable gains.
#
# A component that computes a weighted sum of three real inputs, allowing different gain factors to be
# applied to each input before summation. The output is calculated using the formula:
#
# ```math
# y = k_1 \cdot u_1 + k_2 \cdot u_2 + k_3 \cdot u_3
# ```
#
# where `k_1`, `k_2`, and `k_3` are user-configurable gain parameters.
component Add3
  # First real input signal
  u1 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input1", "x1": -50, "y1": 150, "x2": 50, "y2": 250}}
    }
  }]
  # Second real input signal
  u2 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input2", "x1": -50, "y1": 450, "x2": 50, "y2": 550}}
    }
  }]
  # Third real input signal
  u3 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input3", "x1": -50, "y1": 750, "x2": 50, "y2": 850}}
    }
  }]
  # Output signal representing the weighted sum of inputs
  y = RealOutput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "output", "x1": 950, "y1": 450, "x2": 1050, "y2": 550}}
    }
  }]
  # Gain of `u1`
  parameter k1::Real = 1.0
  # Gain of `u2`
  parameter k2::Real = 1.0
  # Gain of `u3`
  parameter k3::Real = 1.0
relations
  y = k1*u1+k2*u2+k3*u3
metadata {"Dyad": {"icons": {"default": "dyad://BlockComponents/Add3.svg"}}}
end

Flattened Source

# Weighted summation block that adds three scalar inputs with configurable gains.
#
# A component that computes a weighted sum of three real inputs, allowing different gain factors to be
# applied to each input before summation. The output is calculated using the formula:
#
# ```math
# y = k_1 \cdot u_1 + k_2 \cdot u_2 + k_3 \cdot u_3
# ```
#
# where `k_1`, `k_2`, and `k_3` are user-configurable gain parameters.
component Add3
  # First real input signal
  u1 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input1", "x1": -50, "y1": 150, "x2": 50, "y2": 250}}
    }
  }]
  # Second real input signal
  u2 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input2", "x1": -50, "y1": 450, "x2": 50, "y2": 550}}
    }
  }]
  # Third real input signal
  u3 = RealInput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "input3", "x1": -50, "y1": 750, "x2": 50, "y2": 850}}
    }
  }]
  # Output signal representing the weighted sum of inputs
  y = RealOutput() [{
    "Dyad": {
      "placement": {"icon": {"iconName": "output", "x1": 950, "y1": 450, "x2": 1050, "y2": 550}}
    }
  }]
  # Gain of `u1`
  parameter k1::Real = 1.0
  # Gain of `u2`
  parameter k2::Real = 1.0
  # Gain of `u3`
  parameter k3::Real = 1.0
relations
  y = k1*u1+k2*u2+k3*u3
metadata {"Dyad": {"icons": {"default": "dyad://BlockComponents/Add3.svg"}}}
end

Test Cases

This is setup code, that must be run before each test case.

using BlockComponents
using ModelingToolkit, OrdinaryDiffEqDefault
using Plots
using CSV, DataFrames

snapshotsdir = joinpath(dirname(dirname(pathof(BlockComponents))), "test", "snapshots")

"/home/actions-runner-10/.julia/packages/BlockComponents/77kIK/test/snapshots"

Related

• Examples

• Experiments

• Analyses

• Tests

  • Add3Test