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[PID] Add support for saving i-term when PID is reset #180

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@destogl destogl commented Feb 11, 2024

Saves integral term on reset to maintain steady state offset output.
This is required for controlling of system without integral part to achieve correct steady-state output.
If intergral term is reset for some time there will be incorrect output in steady-state. This features avoids such situations and makes btter performance.

Whalex451 and others added 4 commits February 11, 2024 09:06
Added save_iterm_ to PID gains
Added save_iterm() and clear_saved_iterm() methods to update and clear save integral term
Cleared saved integral term in constructor
Called save_iterm() in reset() method
Added saved integral term to PID output
Simplified saving of integral term
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@olivier-stasse olivier-stasse left a comment

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LGTM

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@christophfroehlich christophfroehlich left a comment

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There is no test if this parameter has the desired effect. Could you please add any? e.g., to gainSettingCopyPIDTest or add a new one..

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codecov-commenter commented Nov 4, 2024

Codecov Report

Attention: Patch coverage is 96.07843% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.41%. Comparing base (ec19b21) to head (0f92493).

Files with missing lines Patch % Lines
src/pid.cpp 93.75% 1 Missing ⚠️
src/pid_ros.cpp 92.30% 0 Missing and 1 partial ⚠️
Additional details and impacted files
@@               Coverage Diff               @@
##           ros2-master     #180      +/-   ##
===============================================
+ Coverage        74.88%   75.41%   +0.53%     
===============================================
  Files               24       24              
  Lines             1107     1135      +28     
  Branches            86       89       +3     
===============================================
+ Hits               829      856      +27     
  Misses             231      231              
- Partials            47       48       +1     
Flag Coverage Δ
unittests 75.41% <96.07%> (+0.53%) ⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines Coverage Δ
include/control_toolbox/pid.hpp 81.81% <100.00%> (+4.04%) ⬆️
include/control_toolbox/pid_ros.hpp 100.00% <ø> (ø)
test/pid_parameters_tests.cpp 100.00% <100.00%> (ø)
test/pid_publisher_tests.cpp 95.23% <100.00%> (ø)
test/pid_tests.cpp 100.00% <100.00%> (ø)
src/pid.cpp 93.42% <93.75%> (+0.77%) ⬆️
src/pid_ros.cpp 72.92% <92.30%> (+0.51%) ⬆️

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I added a test for this functionality to integralOnlyTest

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5 participants