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Sensors.PowerSensor.md

Sensors.PowerSensor ​

Ideal sensor measuring the translational power flowing through a point.

This component measures the instantaneous mechanical translational power. It is intended to measure power calculated at flange_a. The sensor is ideal: it does not dissipate energy or introduce any mechanical impedance beyond its defining equations. A key characteristic is the constraint flangea.s=flangeb.s, which means both flanges share the same position and, consequently, the same velocity. The sensor thus measures the power flowing through the connection point flange_a, while flange_b serves to complete the mechanical path with identical motion. The measured power P is defined as:

P=F⋅v

math

where F corresponds to the force flange_a.f at flange_a and v corresponds to the velocity der(flange_a.s) of flange_a.

This component extends from TranslationalComponents.Interfaces.PartialRelativeSensor

Usage ​

TranslationalComponents.Sensors.PowerSensor()

Connectors ​

  • flange_a - This connector represents a mechanical flange with position and force as the potential and flow variables, respectively. (Flange)

  • flange_b - This connector represents a mechanical flange with position and force as the potential and flow variables, respectively. (Flange)

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

Behavior ​

julia
using TranslationalComponents #hide
using ModelingToolkit #hide
@named sys = TranslationalComponents.Sensors.PowerSensor() #hide
full_equations(sys) #hide
<< @example-block not executed in draft mode >>

Source ​

dyad
"""
Ideal sensor measuring the translational power flowing through a point.

This component measures the instantaneous mechanical translational power.
It is intended to measure power calculated at `flange_a`.
The sensor is ideal: it does not dissipate energy or introduce any mechanical impedance beyond its defining equations.
A key characteristic is the constraint $flange_a.s = flange_b.s$, which means
both flanges share the same position and, consequently, the same velocity.
The sensor thus measures the power flowing through the connection point `flange_a`,
while `flange_b` serves to complete the mechanical path with identical motion.
The measured power $P$ is defined as:

```math
P = F \cdot v
```math

where $F$ corresponds to the force `flange_a.f` at `flange_a` and $v$ corresponds
to the velocity `der(flange_a.s)` of `flange_a`.
"""
component PowerSensor
  extends TranslationalComponents.Interfaces.PartialRelativeSensor
  "Output signal representing the measured power, calculated as power in flange `flange_a`."
  power = RealOutput(units = "W") {
    "Dyad": {
      "placement": {"icon": {"x1": 450, "y1": 950, "x2": 550, "y2": 1050, "rot": 90}}
    }
  }
relations
  flange_a.s = flange_b.s
  power = flange_a.f * der(flange_a.s)
metadata {
  "Dyad": {"icons": {"default": "dyad://TranslationalComponents/RelativeSensor.svg"}}
}
end
Flattened Source
dyad
"""
Ideal sensor measuring the translational power flowing through a point.

This component measures the instantaneous mechanical translational power.
It is intended to measure power calculated at `flange_a`.
The sensor is ideal: it does not dissipate energy or introduce any mechanical impedance beyond its defining equations.
A key characteristic is the constraint $flange_a.s = flange_b.s$, which means
both flanges share the same position and, consequently, the same velocity.
The sensor thus measures the power flowing through the connection point `flange_a`,
while `flange_b` serves to complete the mechanical path with identical motion.
The measured power $P$ is defined as:

```math
P = F \cdot v
```math

where $F$ corresponds to the force `flange_a.f` at `flange_a` and $v$ corresponds
to the velocity `der(flange_a.s)` of `flange_a`.
"""
component PowerSensor
  "Negative connection flange of the sensor, often considered the reference point."
  flange_a = Flange() {"Dyad": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}}
  "Positive connection flange of the sensor, where the measurement is taken relative to flange_a."
  flange_b = Flange() {"Dyad": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}}
  "Output signal representing the measured power, calculated as power in flange `flange_a`."
  power = RealOutput(units = "W") {
    "Dyad": {
      "placement": {"icon": {"x1": 450, "y1": 950, "x2": 550, "y2": 1050, "rot": 90}}
    }
  }
relations
  0 = flange_a.f + flange_b.f
  flange_a.s = flange_b.s
  power = flange_a.f * der(flange_a.s)
metadata {
  "Dyad": {"icons": {"default": "dyad://TranslationalComponents/RelativeSensor.svg"}}
}
end


Test Cases ​

No test cases defined.

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