Data container

Data container is the set of variables that contains all the necessary data of the simulation. We have two sub-modules for data container.

Frames: data container for frame representation
TimeLine: data container for the time-variant physical quantities

`Frames`

Frames is the module that handles data container for attitude frame representation. Please visit frames for notation and detailed explanation of the attitude frame representation

FlexibleSpacecraft.Frames.Frame — Type

struct Frame(x::Vector{Real}, y::Vector{Real}, z::Vector{Real})

Struct of immutable vectors that express the coordinate frame of a certain state

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Base.:* — Method

Base. :*(C::Union{SMatrix{3, 3, <:Real}, Matrix{<:Real}}, refframe::Frame)::Frame

Calculate the transformed frame with transformation matrix C with respect to refframe

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Base.:- — Method

Base.:-(a::Frame, b::Frame)::Frame

Subtraction operator for struct Frame.

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FlexibleSpacecraft.Frames.ECI2BodyFrame — Method

ECI2BodyFrame(q)

Calculate the transformation matrix from ECI frame to spacecraft body-fixed frame.

Arguments

q: quaternion

Return

transformation_matrix: transformation matrix

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FlexibleSpacecraft.Frames.getframe — Method

getframe(time, sampling_period, coordinates::FrameArray)

get a sampledframe::Frame matching with given time

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FlexibleSpacecraft.Frames.initframes — Method

initframes(datanum, initial_coordinate::Frame)

initialize StructArray of time-variant coordinate frame

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`TimeLine`

FlexibleSpacecraft.TimeLine.InitData — Type

struct InitData

Struct that consists of the initial state value of the time-variant physical amounts in simulation

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Base.getindex — Method

Base.getindex(v::Vector{<:SVector}, r::Int, datarow::Int)

get an element of the v<:SVector, used for custom data container for FlexibleSpacecraft.jl

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Base.getindex — Method

Base.getindex(v::Vector{<:SVector}, r::AbstractRange, datarow::Int)

get a 1-D subset of the every datarow-th row of v::Vector{<:SVector} within r::AbstractRange, used for custom data container for FlexibleSpacecraft.jl

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FlexibleSpacecraft.TimeLine._initangularvelocity — Method

function _initangularvelocity(simdata_num, initital_value::Vector)

Initialize array that contains time response of angular velocity

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FlexibleSpacecraft.TimeLine._initquaternion — Method

function _initquaternion(simdata_num, initial_value::Vector[4])

initialize array that contains time response of quaternion

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FlexibleSpacecraft.TimeLine.getdataindex — Method

function getdataindex(timerange::Tuple{<:Real, <:Real}, samplingtime::Real)::Union{UnitRange{Int64}, Colon}

returns an index::::Union{UnitRange{Int64}, Colon} that corresponding to the given timerange::Tuple{<:Real, <:Real}

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FlexibleSpacecraft.TimeLine.initsimulationdata — Method

initsimulationdata(datanum::Int, initialdata::InitData)

Initialize the data container for the attitude dynamics

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