Initial Commit

particle.py

@@ -0,0 +1,66 @@
+import random as rd
+
+class Particle():
+    def __init__(self, nb_vehicles:int=10, delta_t:int=60, sim_duration:int=4320, a_min=-100, a_max=100, alpha=0.1):
+        # Problem specific attributes
+        self.nb_vehicles = nb_vehicles # Number of vehicles handles for the generations of position x
+        self.delta_t = delta_t # delta_t for update purposes
+        self.sim_duration = sim_duration # max duration and number of updates (multiplied by delta_time)
+
+        self.socs= self.generate_state_of_charges() # States of charge (initial, requested)
+        self.times = self.generate_times() # Times (arrived, leaving)
+
+        # Minima and maxima of a position value
+        self.a_min = a_min
+        self.a_max = a_max
+
+        # Limitation of the velocity
+        self.alpha = alpha
+        self.r1 = [rd.randrange(0,101,1)/100 for _ in range(self.nb_vehicles)] # Variable trust of oneself
+        self.r2 = [rd.randrange(0,101,1)/100 for _ in range(self.nb_vehicles)] # Variable trust of other particles
+
+        # Particle attributes
+        self.x = self.generate_position() # Position Vector (correspond to one solution for the problem)
+        self.v = self.generate_velocity() # Velocity
+        self.p_best = self.x # Best known position (starting with initial position x)
+
+    def update_position(self):
+        for i in range(self.nb_vehicles):
+            new_pos_i = self.x[i] + self.v[i]
+            self.x[i] = new_pos_i
+
+    def update_velocity(self, leader, c1, c2, w=0.4):
+        for i in range(self.nb_vehicles):
+            new_vel_i = w * self.v[i] + (self.p_best - self.x[i]) * c1 * self.r1[i] + (leader - self.x[i]) * c2 * self.r2[i]
+            self.v[i] = new_vel_i
+
+    def generate_state_of_charges(self):
+        socs = []
+        # We ensure soc_req is greater than what the soc_init is (percentage transformed into floats)
+        for _ in range(self.nb_vehicles):
+            soc_init = rd.randrange(0,100,1)
+            soc_req = rd.randrange(soc_init+1, 101,1)
+            socs.append((soc_init/100, soc_req/100))
+        return socs
+    
+    def generate_times(self):
+        times = []
+        for _ in range(self.nb_vehicles):
+            # Minumun, we have one tick of charging during simulation
+            t_arrived = rd.randrange(0, (self.sim_duration - self.delta_time) +1, self.delta_time)
+            t_leaving = rd.randrange(t_arrived + self.delta_time, self.sim_duration+1, self.delta_time)
+            times.append((t_arrived,t_leaving))
+        return times
+    
+    def generate_position(self):
+        pos = []
+        for _ in range(self.nb_vehicles):
+            pos.append(rd.randrange(self.a_min, self.a_max +1, 1))
+        return pos
+    
+    def generate_velocity(self):
+        vel = []
+        vel_coeff = self.a_max - self.a_min
+        for _ in range(self.nb_vehicles):
+            vel.append(rd.randrange(-vel_coeff, vel_coeff +1, 1) * self.alpha)
+        return vel