Files
sunnypilot/selfdrive/controls/lib/latcontrol.py
Shane Smiskol 6891b795c4 controls: limit max curvature from lateral acceleration (#34651)
* limit max curvature with lateral accel too

* not a guideline

* roll compensation in curv clip

* improve clipping and alerting

* typo

* clean up

* no float

* get ready

* good idea

* good

* redundant

* TODO

* test

* do max curvature clip last

* flip

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Co-authored-by: Bruce Wayne <harald.the.engineer@gmail.com>
2025-03-03 19:47:52 -08:00

34 lines
1.1 KiB
Python

import numpy as np
from abc import abstractmethod, ABC
from openpilot.common.realtime import DT_CTRL
MIN_LATERAL_CONTROL_SPEED = 0.3 # m/s
class LatControl(ABC):
def __init__(self, CP, CI):
self.sat_count_rate = 1.0 * DT_CTRL
self.sat_limit = CP.steerLimitTimer
self.sat_count = 0.
self.sat_check_min_speed = 10.
# we define the steer torque scale as [-1.0...1.0]
self.steer_max = 1.0
@abstractmethod
def update(self, active, CS, VM, params, steer_limited_by_controls, desired_curvature, calibrated_pose, curvature_limited):
pass
def reset(self):
self.sat_count = 0.
def _check_saturation(self, saturated, CS, steer_limited_by_controls, curvature_limited):
# Saturated only if control output is not being limited by car torque/angle rate limits
if (saturated or curvature_limited) and CS.vEgo > self.sat_check_min_speed and not steer_limited_by_controls and not CS.steeringPressed:
self.sat_count += self.sat_count_rate
else:
self.sat_count -= self.sat_count_rate
self.sat_count = np.clip(self.sat_count, 0.0, self.sat_limit)
return self.sat_count > (self.sat_limit - 1e-3)