4 ms·
The old ship steering analogy: P: is steering hard because you are off course. I: is steering into the wind to counteract wind drift and into the current to c
by monkmartinez 5y ago
The old ship steering analogy:
P: is steering hard because you are off course.
I: is steering into the wind to counteract wind drift and into the current to counteract opposing currents as you move toward course.
D: is reducing steering input as you close on the intended course
- ahepp 5y agoFor those who may not know, automatically steering ships was the problem PID controllers were invented to solve. So one might even say it’s more than an analogy!
- lagrange77 5y agoIts control laws were even derived after observing an actual helmsman. See https://en.wikipedia.org/wiki/PID_controller#Origins https://en.wikipedia.org/wiki/PID_controller#Origins