Table of Contents

Class Accelerometer

Namespace
NominalSystems.Classes
Assembly
NominalSystems.Classes.dll

[Nominal] The accelerometer sensor is able to measure the acceleration of the spacecraft that is being attached to.

public class Accelerometer : Sensor
Inheritance
Accelerometer

Constructors

Accelerometer()

Default constructor

protected Accelerometer()

Fields

Bias

Translational acceleration sensor bias

[Unit(UnitType.METRE_PER_SECOND_SQUARED)]
public Vector3 Bias

Field Value

Vector3

DiscretizationBinSize

The value for the least significant bit on the discretised noise model. This is the size of the bin used by the discretization utility.

[Unit(UnitType.NONE)]
public double DiscretizationBinSize

Field Value

double

In_SpacecraftStateMsg

A reference to the base spacecraft's state message for computing the state of the object.

public SpacecraftStateMessage? In_SpacecraftStateMsg

Field Value

SpacecraftStateMessage

MaxOutput

Accelerometer saturation value

[Unit(UnitType.METRE_PER_SECOND_SQUARED)]
public double MaxOutput

Field Value

double

Out_AccelerometerDataMsg

Output message for IMU accelerometer data

public AccelerometerDataMessage? Out_AccelerometerDataMsg

Field Value

AccelerometerDataMessage

PMatrix

Cholesky-decomposition or matrix square root of the covariance matrix to apply errors with

[Unit(UnitType.NONE)]
public Matrix3 PMatrix

Field Value

Matrix3

ScaleFactor

Scale factor for the sensor data

[Unit(UnitType.NONE)]
public double ScaleFactor

Field Value

double

WalkBounds

"3-sigma" errors to permit for states

[Unit(UnitType.NONE)]
public Vector3 WalkBounds

Field Value

Vector3

Properties

Acceleration_LN_B

Apparent acceleration of the platform in the body frame.

[Unit(UnitType.METRE_PER_SECOND_SQUARED)]
[ReadOnly]
[Metadata(ContainedIn = "Out_AccelerometerDataMsg")]
public Vector3 Acceleration_LN_B { get; }

Property Value

Vector3

DeltaVelocity_LN_B

Accumulated delta velocity (DV) of the platform in the body frame.

[Unit(UnitType.SQUARE_METRE)]
[ReadOnly]
[Metadata(ContainedIn = "Out_AccelerometerDataMsg")]
public Vector3 DeltaVelocity_LN_B { get; }

Property Value

Vector3

Methods

OnBegin(double)

Called when the object is beginning ticking for the first time. This is when the simulation calls the very first tick and will run before the update call.

protected override void OnBegin(double time)

Parameters

time double

[s] Current time of the simulation before the tick

OnCreate()

Called when the 'Component' is created from the controller.

protected override void OnCreate()

OnLoad(double)

Called after all of the data has been loaded from a save state on this object. This enables any post-load operations to be performed and extra data to be loaded from the metadata.

protected override void OnLoad(double time)

Parameters

time double

[s] The current clock time of the simulation

OnSave()

Called before the object is saved into the save state. This ensures that any additional metadata can be saved on the object before it is automatically serialized.

protected override void OnSave()

OnUpdate(double, double)

Called when the object should update from the simulation tick. This will take in a time and a step, where the time is the time of the clock before updating the object.

protected override void OnUpdate(double time, double step)

Parameters

time double

[s] Current time of the simulation before the update

step double

[s] The time-step to update during this tick