PID is most precious in Process Control & Instrumentation.
If you have more applications and willing to share ... !
Have a good visit ... Jean.

Cubic solver Algo Style.sm (30.01 KiB) downloaded 796 time(s).
Cubic solver Lagrange canonic.sm (136.98 KiB) downloaded 854 time(s).
Cubic solver PID.sm (145.68 KiB) downloaded 856 time(s).