openpilot/common/filter_simple.py
github-actions[bot] 1f7233cb98 sunnypilot v0.10.1
version: sunnypilot v0.10.1 (staging-tici)
date: 2025-10-13T01:35:37
master commit: 737a6c4236e843034680c951005b38d15815363f
2025-10-13 01:35:37 +00:00

18 lines
426 B
Python

class FirstOrderFilter:
def __init__(self, x0, rc, dt, initialized=True):
self.x = x0
self.dt = dt
self.update_alpha(rc)
self.initialized = initialized
def update_alpha(self, rc):
self.alpha = self.dt / (rc + self.dt)
def update(self, x):
if self.initialized:
self.x = (1. - self.alpha) * self.x + self.alpha * x
else:
self.initialized = True
self.x = x
return self.x