Browse Source

Support vels/accels/threshs attrs of JointTrajectoryPoint

pull/5/head
hello-binit 3 years ago
parent
commit
2422e067aa
1 changed files with 69 additions and 22 deletions
  1. +69
    -22
      stretch_core/nodes/command_groups.py

+ 69
- 22
stretch_core/nodes/command_groups.py View File

@ -92,12 +92,14 @@ class SimpleCommandGroup:
bool
False if commanded goal invalid, else True
"""
# TODO: validate commanded_joint_names and all arrays in JointTrajectoryPoint (positions/velocities/etc) are same size
self.goal = {"position": None}
self.goal = {"position": None, "velocity": None, "acceleration": None, "contact_threshold": None}
if self.active:
self.goal['position'] = point.positions[self.index]
self.goal['position'] = point.positions[self.index] if len(point.positions) > self.index else None
self.goal['velocity'] = point.velocities[self.index] if len(point.velocities) > self.index else None
self.goal['acceleration'] = point.accelerations[self.index] if len(point.accelerations) > self.index else None
self.goal['contact_threshold'] = point.effort[self.index] if len(point.effort) > self.index else None
if self.goal['position'] is None:
err_str = 'Received goal point that is out of bounds. The first error that was caught is that the {0} goal is invalid ({1} = {2}).'.format(self.name, self.name, self.goal['position'])
err_str = "Received goal point with positions array length={0}. This joint ({1})'s index is {2}. Length of array must cover all joints listed in commanded_joint_names.".format(len(point.positions), self.name, self.index)
invalid_goal_callback(err_str)
return False
@ -161,7 +163,7 @@ class HeadPanCommandGroup(SimpleCommandGroup):
def init_execution(self, robot, robot_status, **kwargs):
if self.active:
pan_error = self.update_execution(robot_status, backlash_state=kwargs['backlash_state'])
robot.head.move_by('head_pan', pan_error)
robot.head.move_by('head_pan', pan_error, v_r=self.goal['velocity'], a_r=self.goal['acceleration'])
if pan_error > 0.0:
kwargs['backlash_state']['head_pan_looked_left'] = True
else:
@ -195,7 +197,7 @@ class HeadTiltCommandGroup(SimpleCommandGroup):
def init_execution(self, robot, robot_status, **kwargs):
if self.active:
tilt_error = self.update_execution(robot_status, backlash_state=kwargs['backlash_state'])
robot.head.move_by('head_tilt', tilt_error)
robot.head.move_by('head_tilt', tilt_error, v_r=self.goal['velocity'], a_r=self.goal['acceleration'])
if tilt_error > (self.head_tilt_backlash_transition_angle + self.head_tilt_calibrated_offset):
kwargs['backlash_state']['head_tilt_looking_up'] = True
else:
@ -223,7 +225,7 @@ class WristYawCommandGroup(SimpleCommandGroup):
def init_execution(self, robot, robot_status, **kwargs):
if self.active:
robot.end_of_arm.move_by('wrist_yaw', self.update_execution(robot_status))
robot.end_of_arm.move_by('wrist_yaw', self.update_execution(robot_status), v_r=self.goal['velocity'], a_r=self.goal['acceleration'])
def update_execution(self, robot_status, **kwargs):
self.error = None
@ -267,7 +269,7 @@ class GripperCommandGroup(SimpleCommandGroup):
gripper_robotis_error = self.gripper_conversion.aperture_to_robotis(gripper_error)
elif (self.name == 'joint_gripper_finger_left') or (self.name == 'joint_gripper_finger_right'):
gripper_robotis_error = self.gripper_conversion.finger_to_robotis(gripper_error)
robot.end_of_arm.move_by('stretch_gripper', gripper_robotis_error)
robot.end_of_arm.move_by('stretch_gripper', gripper_robotis_error, v_r=self.goal['velocity'], a_r=self.goal['acceleration'])
def update_execution(self, robot_status, **kwargs):
self.error = None
@ -330,13 +332,21 @@ class TelescopingCommandGroup(SimpleCommandGroup):
return True
def set_goal(self, point, invalid_goal_callback, **kwargs):
self.goal = {"position": None}
self.goal = {"position": None, "velocity": None, "acceleration": None, "contact_threshold": None}
if self.active:
self.goal['position'] = sum([point.positions[i] for i in self.index]) \
if self.is_telescoping else point.positions[self.index]
if self.is_telescoping:
self.goal['position'] = sum([point.positions[i] for i in self.index]) if len(point.positions) > max(self.index) else None
self.goal['velocity'] = point.velocities[self.index[0]] if len(point.velocities) > self.index[0] else None
self.goal['acceleration'] = point.accelerations[self.index[0]] if len(point.accelerations) > self.index[0] else None
self.goal['contact_threshold'] = point.effort[self.index[0]] if len(point.effort) > self.index[0] else None
else:
self.goal['position'] = point.positions[self.index] if len(point.positions) > self.index else None
self.goal['velocity'] = point.velocities[self.index] if len(point.velocities) > self.index else None
self.goal['acceleration'] = point.accelerations[self.index] if len(point.accelerations) > self.index else None
self.goal['contact_threshold'] = point.effort[self.index] if len(point.effort) > self.index else None
if self.goal['position'] is None:
err_str = 'Received extension goal point that is out of bounds. \
Goal point = {0}.'.format(self.goal['position'])
err_str = "Received goal point with positions array length={0}. This joint ({1})'s index is {2}. Length of array must cover all joints listed in commanded_joint_names.".format(len(point.positions), self.name, self.index)
invalid_goal_callback(err_str)
return False
@ -345,7 +355,11 @@ class TelescopingCommandGroup(SimpleCommandGroup):
def init_execution(self, robot, robot_status, **kwargs):
if self.active:
extension_error_m = self.update_execution(robot_status, backlash_state=kwargs['backlash_state'])
robot.arm.move_by(extension_error_m)
robot.arm.move_by(extension_error_m,
v_m=self.goal['velocity'],
a_m=self.goal['acceleration'],
contact_thresh_pos_N=self.goal['contact_threshold'],
contact_thresh_neg_N=-self.goal['contact_threshold'] if self.goal['contact_threshold'] is not None else None)
if extension_error_m < 0.0:
kwargs['backlash_state']['wrist_extension_retracted'] = True
else:
@ -372,7 +386,11 @@ class LiftCommandGroup(SimpleCommandGroup):
def init_execution(self, robot, robot_status, **kwargs):
if self.active:
robot.lift.move_by(self.update_execution(robot_status))
robot.lift.move_by(self.update_execution(robot_status),
v_m=self.goal['velocity'],
a_m=self.goal['acceleration'],
contact_thresh_pos_N=self.goal['contact_threshold'],
contact_thresh_neg_N=-self.goal['contact_threshold'] if self.goal['contact_threshold'] is not None else None)
def update_execution(self, robot_status, **kwargs):
self.error = None
@ -448,18 +466,29 @@ class MobileBaseCommandGroup(SimpleCommandGroup):
return True
def set_goal(self, point, invalid_goal_callback, **kwargs):
self.goal = {"position": None}
self.goal_translate_mobile_base = {"position": None}
self.goal_rotate_mobile_base = {"position": None}
self.goal = {"position": None, "velocity": None, "acceleration": None, "contact_threshold": None}
self.goal_translate_mobile_base = {"position": None, "velocity": None, "acceleration": None, "contact_threshold": None}
self.goal_rotate_mobile_base = {"position": None, "velocity": None, "acceleration": None, "contact_threshold": None}
if self.active:
if self.active_translate_mobile_base or self.active_rotate_mobile_base:
if len(point.positions) <= self.index_translate_mobile_base and len(point.positions) <= self.index_rotate_mobile_base:
err_str = "Received goal point with positions array length={0}. These joints ({1})'s indices are {2} & {3} respectively. Length of array must cover all joints listed in commanded_joint_names.".format(len(point.positions), self.incrementing_joint_names, self.index_translate_mobile_base, self.index_rotate_mobile_base)
invalid_goal_callback(err_str)
return False
if self.active_translate_mobile_base and \
not np.isclose(point.positions[self.index_translate_mobile_base], 0.0, rtol=1e-5, atol=1e-8, equal_nan=False):
self.goal_translate_mobile_base['position'] = point.positions[self.index_translate_mobile_base]
self.goal_translate_mobile_base['velocity'] = point.velocities[self.index_translate_mobile_base] if len(point.velocities) > self.index_translate_mobile_base else None
self.goal_translate_mobile_base['acceleration'] = point.accelerations[self.index_translate_mobile_base] if len(point.accelerations) > self.index_translate_mobile_base else None
self.goal_translate_mobile_base['contact_threshold'] = point.effort[self.index_translate_mobile_base] if len(point.effort) > self.index_translate_mobile_base else None
if self.active_rotate_mobile_base and \
not np.isclose(point.positions[self.index_rotate_mobile_base], 0.0, rtol=1e-5, atol=1e-8, equal_nan=False):
self.goal_rotate_mobile_base['position'] = point.positions[self.index_rotate_mobile_base]
self.goal_rotate_mobile_base['velocity'] = point.velocities[self.index_rotate_mobile_base] if len(point.velocities) > self.index_rotate_mobile_base else None
self.goal_rotate_mobile_base['acceleration'] = point.accelerations[self.index_rotate_mobile_base] if len(point.accelerations) > self.index_rotate_mobile_base else None
self.goal_rotate_mobile_base['contact_threshold'] = point.effort[self.index_rotate_mobile_base] if len(point.effort) > self.index_rotate_mobile_base else None
if (self.goal_translate_mobile_base['position'] is not None) and \
(self.goal_rotate_mobile_base['position'] is not None):
@ -470,7 +499,16 @@ class MobileBaseCommandGroup(SimpleCommandGroup):
invalid_goal_callback(err_str)
return False
else:
self.goal['position'] = self.ros_to_mechaduino(point.positions[self.index], kwargs['manipulation_origin'])
goal_pos = point.positions[self.index] if len(point.positions) > self.index else None
if goal_pos is None:
err_str = "Received goal point with positions array length={0}. This joint ({1})'s index is {2}. Length of array must cover all joints listed in commanded_joint_names.".format(len(point.positions), self.name, self.index)
invalid_goal_callback(err_str)
return False
self.goal['position'] = self.ros_to_mechaduino(goal_pos, kwargs['manipulation_origin'])
self.goal['velocity'] = point.velocities[self.index] if len(point.velocities) > self.index else None
self.goal['acceleration'] = point.accelerations[self.index] if len(point.accelerations) > self.index else None
self.goal['contact_threshold'] = point.effort[self.index] if len(point.effort) > self.index else None
if self.goal['position'] is None:
err_str = 'Received {0} goal point that is out of bounds. \
Range = {1}, but goal point = {2}.'.format(self.name, self.range, self.goal['position'])
@ -493,11 +531,20 @@ class MobileBaseCommandGroup(SimpleCommandGroup):
if self.active_translate_mobile_base or self.active_rotate_mobile_base:
mobile_base_error_m, mobile_base_error_rad = self.update_execution(robot_status)
if mobile_base_error_m is not None:
robot.base.translate_by(mobile_base_error_m)
robot.base.translate_by(mobile_base_error_m,
v_m=self.goal_translate_mobile_base['velocity'],
a_m=self.goal_translate_mobile_base['acceleration'],
contact_thresh_N=self.goal_translate_mobile_base['contact_threshold'])
elif mobile_base_error_rad is not None:
robot.base.rotate_by(mobile_base_error_rad)
robot.base.rotate_by(mobile_base_error_rad,
v_r=self.goal_rotate_mobile_base['velocity'],
a_r=self.goal_rotate_mobile_base['acceleration'],
contact_thresh_N=self.goal_rotate_mobile_base['contact_threshold'])
else:
robot.base.translate_by(self.update_execution(robot_status))
robot.base.translate_by(self.update_execution(robot_status),
v_m=self.goal['velocity'],
a_m=self.goal['acceleration'],
contact_thresh_N=self.goal['contact_threshold'])
def update_execution(self, robot_status, **kwargs):
currx = robot_status['base']['x']

Loading…
Cancel
Save