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Kuka grasp with one motor gripper.

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This commit is contained in:
YunfeiBai
2016-09-25 21:13:31 -07:00
parent b803f4e7cf
commit 60d07a6f6e
2 changed files with 64 additions and 47 deletions
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1
data/gripper/wsg50_one_motor_gripper_free.sdf
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@@ -2,7 +2,6 @@
<sdf version='1.6'>
<world name='default'>
<model name='wsg50_with_gripper'>
<pose frame=''>0 0 0.26 3.14 0 0</pose>
<link name='base_link'>
<pose frame=''>0 0 0 0 0 0</pose>

110
examples/SharedMemory/PhysicsServerCommandProcessor.cpp
View File

@@ -2954,58 +2954,61 @@ void PhysicsServerCommandProcessor::stepSimulationRealTime(double dtInSec)
loadUrdf("kuka_iiwa/model.urdf", btVector3(2.0, 0, 0), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
m_data->m_KukaId = bodyId;
loadSdf("gripper/wsg50_one_motor_gripper_free.sdf", &gBufferServerToClient[0], gBufferServerToClient.size(), true);
m_data->m_gripperId = bodyId + 1;
InteralBodyData* parentBody = m_data->getHandle(m_data->m_KukaId);
InteralBodyData* childBody = m_data->getHandle(m_data->m_gripperId);
// Reset the default gripper motor maximum torque for damping to 0
for (int i = 0; i < childBody->m_multiBody->getNumLinks(); i++)
// Load one motor gripper for kuka
{
if (supportsJointMotor(childBody->m_multiBody, i))
loadSdf("gripper/wsg50_one_motor_gripper_new.sdf", &gBufferServerToClient[0], gBufferServerToClient.size(), true);
m_data->m_gripperId = bodyId + 1;
InteralBodyData* parentBody = m_data->getHandle(m_data->m_KukaId);
InteralBodyData* childBody = m_data->getHandle(m_data->m_gripperId);
// Reset the default gripper motor maximum torque for damping to 0
for (int i = 0; i < childBody->m_multiBody->getNumLinks(); i++)
{
btMultiBodyJointMotor* motor = (btMultiBodyJointMotor*)childBody->m_multiBody->getLink(i).m_userPtr;
if (motor)
if (supportsJointMotor(childBody->m_multiBody, i))
{
motor->setMaxAppliedImpulse(0);
btMultiBodyJointMotor* motor = (btMultiBodyJointMotor*)childBody->m_multiBody->getLink(i).m_userPtr;
if (motor)
{
motor->setMaxAppliedImpulse(0);
}
}
}
}
// Add slider joint for fingers
btVector3 pivotInParent1(0, 0, 0.06);
btVector3 pivotInChild1(0, 0, 0);
btMatrix3x3 frameInParent1(btQuaternion(0, 0, 0, 1.0));
btMatrix3x3 frameInChild1(btQuaternion(0, 0, 0, 1.0));
btVector3 jointAxis1(1.0, 0, 0);
btVector3 pivotInParent2(0, 0, 0.06);
btVector3 pivotInChild2(0, 0, 0);
btMatrix3x3 frameInParent2(btQuaternion(0, 0, 0, 1.0));
btMatrix3x3 frameInChild2(btQuaternion(0, 0, 1.0, 0));
btVector3 jointAxis2(1.0, 0, 0);
btMultiBodySliderConstraint* multibodySlider1 = new btMultiBodySliderConstraint(childBody->m_multiBody, 0, childBody->m_multiBody, 2, pivotInParent1, pivotInChild1, frameInParent1, frameInChild1, jointAxis1);
multibodySlider1->setMaxAppliedImpulse(500.0);
btMultiBodySliderConstraint* multibodySlider2 = new btMultiBodySliderConstraint(childBody->m_multiBody, 0, childBody->m_multiBody, 5, pivotInParent2, pivotInChild2, frameInParent2, frameInChild2, jointAxis2);
multibodySlider1->setMaxAppliedImpulse(500.0);
btMultiBodyDynamicsWorld* world = (btMultiBodyDynamicsWorld*)m_data->m_dynamicsWorld;
world->addMultiBodyConstraint(multibodySlider1);
world->addMultiBodyConstraint(multibodySlider2);
if (parentBody->m_multiBody)
{
childBody->m_multiBody->setHasSelfCollision(0);
btVector3 pivotInParent(0, 0, 0.02);
btMatrix3x3 frameInParent;
frameInParent.setIdentity();
btVector3 pivotInChild(0, 0, 0);
btMatrix3x3 frameInChild;
frameInChild.setIdentity();
m_data->m_kukaGripperFixed = new btMultiBodyFixedConstraint(parentBody->m_multiBody, 6, childBody->m_multiBody, 0, pivotInParent, pivotInChild, frameInParent, frameInChild);
m_data->m_kukaGripperMultiBody = childBody->m_multiBody;
m_data->m_kukaGripperFixed->setMaxAppliedImpulse(10000);
// Add slider joint for fingers
btVector3 pivotInParent1(0, 0, 0.06);
btVector3 pivotInChild1(0, 0, 0);
btMatrix3x3 frameInParent1(btQuaternion(0, 0, 0, 1.0));
btMatrix3x3 frameInChild1(btQuaternion(0, 0, 0, 1.0));
btVector3 jointAxis1(1.0, 0, 0);
btVector3 pivotInParent2(0, 0, 0.06);
btVector3 pivotInChild2(0, 0, 0);
btMatrix3x3 frameInParent2(btQuaternion(0, 0, 0, 1.0));
btMatrix3x3 frameInChild2(btQuaternion(0, 0, 1.0, 0));
btVector3 jointAxis2(1.0, 0, 0);
btMultiBodySliderConstraint* multibodySlider1 = new btMultiBodySliderConstraint(childBody->m_multiBody, 0, childBody->m_multiBody, 3, pivotInParent1, pivotInChild1, frameInParent1, frameInChild1, jointAxis1);
multibodySlider1->setMaxAppliedImpulse(500.0);
btMultiBodySliderConstraint* multibodySlider2 = new btMultiBodySliderConstraint(childBody->m_multiBody, 0, childBody->m_multiBody, 6, pivotInParent2, pivotInChild2, frameInParent2, frameInChild2, jointAxis2);
multibodySlider1->setMaxAppliedImpulse(500.0);
btMultiBodyDynamicsWorld* world = (btMultiBodyDynamicsWorld*)m_data->m_dynamicsWorld;
world->addMultiBodyConstraint(m_data->m_kukaGripperFixed);
world->addMultiBodyConstraint(multibodySlider1);
world->addMultiBodyConstraint(multibodySlider2);
if (parentBody->m_multiBody)
{
childBody->m_multiBody->setHasSelfCollision(0);
btVector3 pivotInParent(0, 0, 0.05);
btMatrix3x3 frameInParent;
frameInParent.setIdentity();
btVector3 pivotInChild(0, 0, 0);
btMatrix3x3 frameInChild;
frameInChild.setIdentity();
m_data->m_kukaGripperFixed = new btMultiBodyFixedConstraint(parentBody->m_multiBody, 6, childBody->m_multiBody, 0, pivotInParent, pivotInChild, frameInParent, frameInChild);
m_data->m_kukaGripperMultiBody = childBody->m_multiBody;
m_data->m_kukaGripperFixed->setMaxAppliedImpulse(10000);
btMultiBodyDynamicsWorld* world = (btMultiBodyDynamicsWorld*)m_data->m_dynamicsWorld;
world->addMultiBodyConstraint(m_data->m_kukaGripperFixed);
}
}
// Load pr2 gripper for kuka
@@ -3067,6 +3070,8 @@ void PhysicsServerCommandProcessor::stepSimulationRealTime(double dtInSec)
}
loadSdf("kiva_shelf/model.sdf", &gBufferServerToClient[0], gBufferServerToClient.size(), true);
loadUrdf("teddy_vhacd.urdf", btVector3(-0.1, 0.6, 0.85), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
loadUrdf("teddy_vhacd.urdf", btVector3(1.6, -0.2, 0.1), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
loadUrdf("cube_small.urdf", btVector3(1.5, -0.3, 0.1), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
//loadUrdf("cup_small.urdf", btVector3(3, 2, 0.85), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
//loadUrdf("pitcher_small.urdf", btVector3(4, 2, 0.85), btQuaternion(0, 0, 0, 1), true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
loadUrdf("sphere_small.urdf", btVector3(-0.1, 0.6, 1.25), gVRGripperOrn, true, false, &bodyId, &gBufferServerToClient[0], gBufferServerToClient.size());
@@ -3075,6 +3080,19 @@ void PhysicsServerCommandProcessor::stepSimulationRealTime(double dtInSec)
}
if (m_data->m_kukaGripperFixed && m_data->m_kukaGripperMultiBody)
{
InteralBodyData* childBody = m_data->getHandle(m_data->m_gripperId);
// Add gripper controller
btMultiBodyJointMotor* motor = (btMultiBodyJointMotor*)childBody->m_multiBody->getLink(1).m_userPtr;
if (motor)
{
btScalar posTarget = (-0.045)*btMin(btScalar(0.75), gVRGripperAnalog) / 0.75;
motor->setPositionTarget(posTarget, 1.0);
motor->setMaxAppliedImpulse(50.0);
}
}
if (m_data->m_gripperRigidbodyFixed && m_data->m_gripperMultiBody)
{
m_data->m_gripperRigidbodyFixed->setFrameInB(btMatrix3x3(gVRGripperOrn));
@@ -3128,7 +3146,7 @@ void PhysicsServerCommandProcessor::stepSimulationRealTime(double dtInSec)
btScalar sqLen = (mb->getBaseWorldTransform().getOrigin() - gVRController2Pos).length2();
btScalar distanceThreshold = 2;
btScalar distanceThreshold = 1.5;
bool closeToKuka=(sqLen<(distanceThreshold*distanceThreshold));
int numDofs = bodyHandle->m_multiBody->getNumDofs();