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fix commit à la con

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This commit is contained in:
mpboyer 2025-01-13 18:11:28 +01:00
commit a5c5642424
1 changed files with 38 additions and 3 deletions
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41
controller.py
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@ -8,9 +8,44 @@ class Controller:
assert isinstance(gtm)
return None
# We control position, but the output of the controller is a set speed.
# Therefore, we have proportional, differential and second differential terms.
class PIDController(Controller):
def __init__(self, p, i, d):
err_x, err_y, err_z = 0., 0., 0.
derr_x, derr_y, derr_z = 0., 0., 0.
d2err_x, d2err_y, d2err_z = 0., 0., 0.
# class PIDController(Controller):
# def __call__(self, gtm, *args, **kwargs):
# self.
self.p, self.i, self.d = p,i,d
def __call__(self, gtm, *args, **kwargs):
err_x_new, err_y_new, err_z_new = gtm.delta_steps
derr_x_new, derr_y_new, derr_z_new =
err_x_new - err_x, err_y_new - err_y, err_z_new - err_z
d2err_x_new, d2err_y_new, d2err_z_new =
derr_x_new - derr_x, derr_y_new - derr_y, derr_z_new - derr_z
err_x,err_y,err_z = err_x_new, err_y_new, err_z_new
derr_x,derr_y,derr_z = derr_x_new, derr_y_new, derr_z_new
d2err_x,d2err_y,d2err_z = d2err_x_new,d2err_y_new,d2err_z_new
speed_cmd_x = self.p * derr_x + self.i * err_x + self.d * d2err_x
speed_cmd_y = self.p * derr_y + self.i * err_y + self.d * d2err_y
speed_cmd_z = self.p * derr_z + self.i * err_z + self.d * d2err_z
# It is the responsability of the coefficients to make sure this results in the desired feedrate
gtm.x_throttle = gtm.target_feedrate/abs(speed_cmd_x)
gtm.x_direction = 1 if (speed_cmd_x > 0) else 0
gtm.y_throttle = gtm.target_feedrate/abs(speed_cmd_y)
gtm.y_direction = 1 if (speed_cmd_y > 0) else 0
gtm.z_throttle = gtm.target_feedrate/abs(speed_cmd_z)
gtm.z_direction = 1 if (speed_cmd_z > 0) else 0
if(gtm.x_throttle > 65536):
gtm.x_throttle = 0
if(gtm.y_throttle > 65536):
gtm.y_throttle = 0
if(gtm.z_throttle > 65536):
gtm.z_throttle = 0