Table of Contents

Class AttitudeReferenceErrorSoftware

Namespace
NominalSystems.Classes
Assembly
NominalSystems.Classes.dll

[Nominal] This module is intended to be the last module in the guidance module chain. It’s input is the reference orientation message generated by a prior module, and the body orientation. It’s output is a guidance attitude to align the body frame with the reference. This module allows for a corrected reference frame, or a equivalent corrected reference frame to account for a corrected body frame. In the output AttGuidMessage, the B frame is the (uncorrected) body frame, the R frame is the corrected reference frame (if applicable). See the Attitude Reference Correction Software for details. This module was previously named Attitude Tracking Error Software.

public class AttitudeReferenceErrorSoftware : Software
Inheritance
AttitudeReferenceErrorSoftware

Constructors

AttitudeReferenceErrorSoftware()

Default constructor

protected AttitudeReferenceErrorSoftware()

Fields

In_AttitudeReferenceMsg

Attitude reference message describing the target reference frame

public AttitudeReferenceMessage? In_AttitudeReferenceMsg

Field Value

AttitudeReferenceMessage

In_NavigationAttitudeMsg

Navigation message describing the actual or estimated state of the body

public NavigationAttitudeMessage? In_NavigationAttitudeMsg

Field Value

NavigationAttitudeMessage

Out_AttitudeErrorMsg

Output attitude error message from the calculations.

public AttitudeErrorMessage? Out_AttitudeErrorMsg

Field Value

AttitudeErrorMessage

Sigma_CR

[MRP] Fixed frame rotation to the corrected reference frame (C) from the reference frame (R).

[Unit(UnitType.NONE)]
public Vector3 Sigma_CR

Field Value

Vector3

Methods

OnCreate()

Called when the object is created from the controller and has been attached to the parent object. By this point, it has been registered to the simulation and will run after the constructor.

protected override void OnCreate()

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