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137 changes: 137 additions & 0 deletions notebooks/demodemo.ipynb

Large diffs are not rendered by default.

26 changes: 26 additions & 0 deletions uuv_mission/controller.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
import numpy as np

class PDController:

def __init__(self, Kp: float = 0.15, Kd: float = 0.6): # Provided values
self.Kp = Kp
self.Kd = Kd
self.previous_error = 0.0 # Provided value
self.is_first_step = True

def compute_control_action(self, current_error: float) -> float:
proportional = self.Kp * current_error

if self.is_first_step:
derivative = 0.0
self.is_first_step = False
else:
derivative = self.Kd * (current_error - self.previous_error)

control_action = proportional + derivative
self.previous_error = current_error
return control_action

def reset(self):
self.previous_error = 0.0
self.is_first_step = True
23 changes: 21 additions & 2 deletions uuv_mission/dynamic.py
Original file line number Diff line number Diff line change
@@ -1,6 +1,10 @@
from __future__ import annotations
from dataclasses import dataclass
import numpy as np

# !!! NEW CODE !!!
import pandas as pd

import matplotlib.pyplot as plt
from .terrain import generate_reference_and_limits

Expand Down Expand Up @@ -76,7 +80,13 @@ def random_mission(cls, duration: int, scale: float):
@classmethod
def from_csv(cls, file_name: str):
# You are required to implement this method
pass

# !!! NEW CODE !!!
df = pd.read_csv(file_name)
reference = df['reference'].to_numpy()
cave_height = df['cave_height'].to_numpy()
cave_depth = df['cave_depth'].to_numpy()
return cls(reference, cave_height, cave_depth)


class ClosedLoop:
Expand All @@ -96,8 +106,17 @@ def simulate(self, mission: Mission, disturbances: np.ndarray) -> Trajectory:

for t in range(T):
positions[t] = self.plant.get_position()
observation_t = self.plant.get_depth()

# !!! CHANGED CODE !!!
current_depth = self.plant.get_depth()

# Call your controller here

# !!! NEW CODE !!!
current_error = mission.reference[t] - current_depth
control_action = self.controller.compute_control_action(current_error)
actions[t] = control_action

self.plant.transition(actions[t], disturbances[t])

return Trajectory(positions)
Expand Down