feat: added comments
This commit is contained in:
Pierre Tellier
parent
aebc157507
commit
0b23964d25
177
control.py
177
control.py
@ -56,12 +56,15 @@ REAL = 0
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# Robot setup
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if REAL == 1:
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try:
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portHandler = PortHandler("/dev/ttyUSB0")
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except:
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portHandler = PortHandler("/dev/ttyUSB1")
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packetHandler = PacketHandler(1.0)
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portHandler.openPort()
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x = portHandler.setBaudRate(1000000)
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print(x)
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portHandler.setBaudRate(1000000)
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ADDR_GOAL_POSITION = 30
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ids = []
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@ -76,15 +79,19 @@ if REAL == 1:
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input()
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# Done
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def interpol2(point2, point1, t):
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"""
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Linear interpolation between two points in space
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"""
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x1, y1, z1 = point1
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x2, y2, z2 = point2
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return t * x1 + (1 - t) * x2, t * y1 + (1 - t) * y2, t * z1 + (1 - t) * z2
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def get_current_step(t, step_duration, movement_duration):
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"""
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helper function used to calculate the current step of the movement i.e. what part of the movement.
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"""
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time_passed = 0
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for i in range(len(step_duration)):
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time_passed += step_duration[i]
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@ -93,6 +100,9 @@ def get_current_step(t, step_duration, movement_duration):
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def get_current_step_advancement(t, movement_duration, step_duration, current_step):
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"""
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helper function used to calculate the current advancement of the movement step i.e. the percentage of progression of said movement.
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"""
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current_step = get_current_step(t, step_duration, movement_duration)
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t = t % movement_duration
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for i in range(0, current_step):
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@ -102,6 +112,7 @@ def get_current_step_advancement(t, movement_duration, step_duration, current_st
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def inverse(x, y, z):
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"""
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Calculate the angle of each motor to have the end of the feet at a specified position
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"""
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# Dimensions (m)
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z += l1v
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@ -109,7 +120,6 @@ def inverse(x, y, z):
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theta0 = atan2(y, x)
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l = sqrt((sqrt(x ** 2 + y ** 2) - l1) ** 2 + z ** 2)
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# l = sqrt((x - l1h*cos(theta0)) ** 2 + (y - l1h*sin(theta0)) ** 2 + (z + l1v) ** 2)
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param2 = -1 * (-(l ** 2) + l2 ** 2 + l3 ** 2) / (2 * l2 * l3)
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@ -126,15 +136,13 @@ def inverse(x, y, z):
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theta1 = acos(param1) + asin(z / l)
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# return [-theta0, theta1, theta2]
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angle1 = atan(l2v / l2h)
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return [-theta0, theta1 + angle1, theta2 + angle1 - pi / 2 + atan(l3h / l3v)]
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# return [0, angle1 , angle1 -pi/2 + atan(l3h/l3v)]
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def legs(targets_robot):
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"""
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takes a list of target and offsets it to be in the legs referential
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takes a list of target and offsets them to be in the legs referential
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"""
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targets = [0] * 18
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@ -163,7 +171,72 @@ def legs(targets_robot):
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return targets
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def normalize(matrix, slider_max, speed):
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return (matrix / slider_max) * speed
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counter = 0
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def convert_to_robot(positions):
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"""
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Send a robot position to the real robot.
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"""
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global counter
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counter += 1
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if counter % 2 != 0:
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return
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index = [
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11, 12, 13,
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41, 42, 43,
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21, 22, 23,
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51, 52, 53,
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61, 62, 63,
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31, 32, 33]
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dir = [-1] * 18
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for i in range(len(positions)):
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value = int(512 + positions[i] * 150 * dir[i])
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packetHandler.write2ByteTxOnly(portHandler, index[i], ADDR_GOAL_POSITION, value)
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def walk(t, sx, sy, sr):
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"""
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Choose the algorithm depending on input of xbox controller
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"""
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xboxdata = xbox.get_data()
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if xbox.initialized:
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max_slider = 0.200
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controllerLogger.debug(xboxdata)
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if xbox.mode == 0:
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positions = static()
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elif xbox.mode == 1:
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positions = jump(xboxdata["y2"])
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elif xbox.mode == 2:
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positions = dino_naive(t, max_slider * xboxdata["y1"], max_slider * xboxdata["x1"],
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max_slider * xboxdata["y2"],
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max_slider * xboxdata["x2"], max_slider * (xboxdata["r2"] + 1))
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elif xbox.mode == 3:
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positions = naive_walk(t, max_slider * xboxdata["x1"], max_slider * xboxdata["y1"])
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elif xbox.mode == 4:
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positions = walk_v2(t, max_slider * xboxdata["y1"], -1 * max_slider * xboxdata["x1"],
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xboxdata["x2"] * max_slider,
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max_slider * xboxdata["y2"])
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# print(positions)
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if REAL == 1:
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convert_to_robot(positions)
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return positions
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else:
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return walk_v2(t, sx, sy, sr, None)
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# different move algorithm
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def naive_walk(t, speed_x, speed_y):
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"""
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First version of walk, using triangle for each step
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"""
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slider_max = 0.200
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real_position = np.copy(neutral_position)
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@ -229,88 +302,25 @@ def naive_walk(t, speed_x, speed_y):
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return legs(real_position)
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def normalize(matrix, slider_max, speed):
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return (matrix / slider_max) * speed
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counter = 0
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def convert_to_robot(positions):
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global counter
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counter += 1
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if counter % 2 != 0:
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return
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index = [
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11, 12, 13,
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41, 42, 43,
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21, 22, 23,
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51, 52, 53,
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61, 62, 63,
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31, 32, 33]
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dir = [-1] * 18
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for i in range(len(positions)):
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value = int(512 + positions[i] * 150 * dir[i])
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packetHandler.write2ByteTxOnly(portHandler, index[i], ADDR_GOAL_POSITION, value)
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def stand(x1, y1, x2, y2):
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return [
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0, 0, 0,
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0, 0, 0,
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x1, 0, 0,
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0, -0.5, 0,
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0, -0.5, 0,
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y1, 0, 0
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]
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def walk(t, sx, sy, sr):
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xboxdata = xbox.get_data()
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if xbox.initialized:
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max_slider = 0.200
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controllerLogger.debug(xboxdata)
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if xbox.mode == 0:
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positions = static()
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elif xbox.mode == 1:
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positions = jump(xboxdata["y2"])
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elif xbox.mode == 2:
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positions = dino_naive(t, max_slider * xboxdata["y1"], max_slider * xboxdata["x1"],
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max_slider * xboxdata["y2"],
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max_slider * xboxdata["x2"], max_slider * (xboxdata["r2"] + 1))
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elif xbox.mode == 3:
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positions = naive_walk(t, max_slider * xboxdata["x1"], max_slider * xboxdata["y1"])
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elif xbox.mode == 4:
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positions = walk_v2(t, max_slider * xboxdata["y1"], -1 * max_slider * xboxdata["x1"],
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xboxdata["x2"] * max_slider,
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max_slider * xboxdata["y2"])
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elif xbox.mode == 5:
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positions = stand(xboxdata["x1"], xboxdata["y1"], xboxdata["x2"], xboxdata["y2"])
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# print(positions)
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if REAL == 1:
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convert_to_robot(positions)
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return positions
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else:
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return walk_v2(t, sx, sy, sr, None)
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def static():
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"""
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Function to have the robot stand at the neutral position
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"""
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return legs(neutral_position)
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# Walk V2
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def walk_v2(t, speed_x, speed_y, speed_r, y2):
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"""
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x1: speed along the x-axis
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y1: speed along the y-axis
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x2: rotational speed along the z-axis
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Second version of the walking algorithm, using circle for each leg
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This is the main algorithm.
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"""
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max_dist = 0.3
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def get_rotation_center(speed_x, speed_y, theta_point):
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"""
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Helper function that calculate the center of rotation of the robot based on the current parameters
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"""
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norm = sqrt(speed_x ** 2 + speed_y ** 2)
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r = 1000 if theta_point == 0 else norm / theta_point
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@ -320,9 +330,7 @@ def walk_v2(t, speed_x, speed_y, speed_r, y2):
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return 0, 0
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center_x, center_y = get_rotation_center(speed_x, speed_y, speed_r)
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legsLogger.debug(f"rotation center: center_x: {center_x}, center_y: {center_y}")
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real_position = np.copy(neutral_position)
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movement_z = np.array([
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@ -408,6 +416,9 @@ def walk_v2(t, speed_x, speed_y, speed_r, y2):
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def jump(sy):
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"""
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Make the robot jump (at least we wished)
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"""
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offset = np.array([
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[0, 0, -0.15],
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[0, 0, -0.15],
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@ -420,8 +431,10 @@ def jump(sy):
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return legs(neutral_position + offset)
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# based on walk V1
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def dino_naive(t, speed_x, speed_y, hz, hy, hx):
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"""
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based on walk naive, but with a head and a tail
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"""
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slider_max = 0.200
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real_position = np.copy(neutral_position)
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