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98 lines
3.7 KiB
98 lines
3.7 KiB
#!/usr/bin/env python3
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from collections import defaultdict
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import importlib
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from parameterized import parameterized_class
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import pytest
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import sys
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from openpilot.selfdrive.car import DT_CTRL
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from openpilot.selfdrive.car.car_helpers import interfaces
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from openpilot.selfdrive.car.fingerprints import all_known_cars
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from openpilot.selfdrive.car.interfaces import get_torque_params
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CAR_MODELS = all_known_cars()
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# ISO 11270 - allowed up jerk is strictly lower than recommended limits
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MAX_LAT_ACCEL = 3.0 # m/s^2
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MAX_LAT_JERK_UP = 2.5 # m/s^3
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MAX_LAT_JERK_DOWN = 5.0 # m/s^3
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MAX_LAT_JERK_UP_TOLERANCE = 0.5 # m/s^3
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# jerk is measured over half a second
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JERK_MEAS_T = 0.5
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@parameterized_class('car_model', [(c,) for c in sorted(CAR_MODELS)])
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class TestLateralLimits:
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car_model: str
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@classmethod
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def setup_class(cls):
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CarInterface, _, _ = interfaces[cls.car_model]
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CP = CarInterface.get_non_essential_params(cls.car_model)
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if CP.dashcamOnly:
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pytest.skip("Platform is behind dashcamOnly")
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# TODO: test all platforms
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if CP.lateralTuning.which() != 'torque':
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pytest.skip()
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if CP.notCar:
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pytest.skip()
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CarControllerParams = importlib.import_module(f'selfdrive.car.{CP.carName}.values').CarControllerParams
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cls.control_params = CarControllerParams(CP)
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cls.torque_params = get_torque_params()[cls.car_model]
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@staticmethod
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def calculate_0_5s_jerk(control_params, torque_params):
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steer_step = control_params.STEER_STEP
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max_lat_accel = torque_params['MAX_LAT_ACCEL_MEASURED']
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# Steer up/down delta per 10ms frame, in percentage of max torque
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steer_up_per_frame = control_params.STEER_DELTA_UP / control_params.STEER_MAX / steer_step
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steer_down_per_frame = control_params.STEER_DELTA_DOWN / control_params.STEER_MAX / steer_step
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# Lateral acceleration reached in 0.5 seconds, clipping to max torque
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accel_up_0_5_sec = min(steer_up_per_frame * JERK_MEAS_T / DT_CTRL, 1.0) * max_lat_accel
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accel_down_0_5_sec = min(steer_down_per_frame * JERK_MEAS_T / DT_CTRL, 1.0) * max_lat_accel
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# Convert to m/s^3
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return accel_up_0_5_sec / JERK_MEAS_T, accel_down_0_5_sec / JERK_MEAS_T
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def test_jerk_limits(self):
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up_jerk, down_jerk = self.calculate_0_5s_jerk(self.control_params, self.torque_params)
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assert up_jerk <= MAX_LAT_JERK_UP + MAX_LAT_JERK_UP_TOLERANCE
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assert down_jerk <= MAX_LAT_JERK_DOWN
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def test_max_lateral_accel(self):
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assert self.torque_params["MAX_LAT_ACCEL_MEASURED"] <= MAX_LAT_ACCEL
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class LatAccelReport:
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car_model_jerks: defaultdict[str, dict[str, float]] = defaultdict(dict)
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def pytest_sessionfinish(self):
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print(f"\n\n---- Lateral limit report ({len(CAR_MODELS)} cars) ----\n")
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max_car_model_len = max([len(car_model) for car_model in self.car_model_jerks])
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for car_model, _jerks in sorted(self.car_model_jerks.items(), key=lambda i: i[1]['up_jerk'], reverse=True):
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violation = _jerks["up_jerk"] > MAX_LAT_JERK_UP + MAX_LAT_JERK_UP_TOLERANCE or \
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_jerks["down_jerk"] > MAX_LAT_JERK_DOWN
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violation_str = " - VIOLATION" if violation else ""
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print(f"{car_model:{max_car_model_len}} - up jerk: {round(_jerks['up_jerk'], 2):5} " +
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f"m/s^3, down jerk: {round(_jerks['down_jerk'], 2):5} m/s^3{violation_str}")
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@pytest.fixture(scope="class", autouse=True)
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def class_setup(self, request):
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yield
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cls = request.cls
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if hasattr(cls, "control_params"):
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up_jerk, down_jerk = TestLateralLimits.calculate_0_5s_jerk(cls.control_params, cls.torque_params)
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self.car_model_jerks[cls.car_model] = {"up_jerk": up_jerk, "down_jerk": down_jerk}
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if __name__ == '__main__':
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sys.exit(pytest.main([__file__, '-n0', '--no-summary'], plugins=[LatAccelReport()])) # noqa: TID251
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