ID with other wing from Patrick

[avikde]

Related to #89

[avikde]

Seems like some sign is wrong at first glance -0.323622 22.6338 0.737315 0.105319 0.506726

Compare to the other wing's plots

[avikde]

Stroke sign was wrong 2.71162 25.542 0.399987 2.37176 3.0698

[avikde]

Comparing to the prior result isn't working since I can't replicate the prior result well right now

[avikde]

At home (laptop)

julia> using Pkg

julia> Pkg.installed()
Dict{String,Union{Nothing, VersionNumber}} with 17 entries:
  "RigidBodyDynamics"      => v"2.1.0"
  "ForwardDiff"            => v"0.10.3"
  "Revise"                 => v"2.1.6"
  "BenchmarkTools"         => v"0.4.2"
  "JuMP"                   => v"0.19.2"
  "DSP"                    => v"0.6.0"
  "OSQP"                   => v"0.5.2"
  "TrajectoryOptimization" => v"0.1.0"
  "Ipopt"                  => v"0.5.4"
  "PyCall"                 => v"1.91.2"
  "MAT"                    => v"0.6.0"
  "Dierckx"                => v"0.4.1"
  "Plots"                  => v"0.26.0"
  "ProgressMeter"          => v"1.0.0"
  "StaticArrays"           => v"0.11.0"
  "DifferentialEquations"  => v"6.6.0"
  "PositiveFactorizations" => v"0.2.2"

In lab (desktop)

  "RigidBodyDynamics"      => v"2.1.0"
  "ForwardDiff"            => v"0.10.3"
  "Revise"                 => v"2.1.6"
  "BenchmarkTools"         => v"0.4.2"
  "Interpolations"         => v"0.12.2"
  "CodeTracking"           => v"0.5.7"
  "DSP"                    => v"0.6.0"
  "OSQP"                   => v"0.5.2"
  "Ipopt"                  => v"0.5.4"
  "BandedMatrices"         => v"0.10.1"
  "MAT"                    => v"0.6.0"
  "Dierckx"                => v"0.4.1"
  "OrdinaryDiffEq"         => v"5.14.0"
  "Plots"                  => v"0.26.0"
  "PyPlot"                 => v"2.8.2"
  "ProgressMeter"          => v"1.0.0"
  "StaticArrays"           => v"0.11.0"
  "DifferentialEquations"  => v"6.6.0"
  "PositiveFactorizations" => v"0.2.2"
  "Parameters"             => v"0.11.0"
  "Requires"               => v"0.5.2"

Left wing

3.26326 29.6996 0.476355 4.69271 4.21278

Right wing

ID result for other wing 2.72547 26.4608 0.39059 2.41643 3.08962

[avikde]

conclusion: reveals much lower stiffness for right vs. left (2.4 vs 4.6). it also thinks that the left wing has higher chord length (3.26 vs. 2.72) and higher T (29 vs 26). Some of these probably have very similar costs since the cost landscape might be somewhat flat especially for a single flap, but it did reveal the lower stiffness of the right wing

[avikde]

unfortunately patrick's left wing produced more lift. possible causes are:

• wing torsion is causing errors
• wing not taut - seems impossible