Vector3<> ViewBikeMath::calcFootPos(const float& leg0, const float& leg1, const float& leg2, const float& leg3, const float& leg4, const float& leg5, const JointData::Joint& joint, const RobotDimensions& robotDimensions)
{
Pose3D footPos(0, 0, 0);
footPos.translate(0, 0, -robotDimensions.heightLeg5Joint);
float sign = joint == JointData::LHipYawPitch ? 1.f : -1.f;
footPos.translate(0, sign * (robotDimensions.lengthBetweenLegs / 2), 0);
footPos.rotateX(-pi_4 * sign);
footPos.rotateZ(-leg0 * sign);
footPos.rotateX(pi_4 * sign);
footPos.rotateX(-leg1 * sign);
footPos.rotateY(leg2);
footPos.translate(0, 0, -robotDimensions.upperLegLength);
footPos.rotateY(leg3);
footPos.translate(0, 0, -robotDimensions.lowerLegLength);
return Vector3<>(footPos.translation.x, footPos.translation.y, footPos.translation.z);
}
Vector3f KickViewMath::calcFootPos(const float& leg0, const float& leg1, const float& leg2, const float& leg3, const float& leg4, const float&
leg5, const Joints::Joint& joint, const RobotDimensions& robotDimensions)
{
Pose3f footPos(0, 0, 0);
footPos.translate(0, 0, -robotDimensions.footHeight);
float sign = joint == Joints::lHipYawPitch ? 1.f : -1.f;
footPos.translate(0, sign * (robotDimensions.yHipOffset), 0);
footPos.rotateX(-pi_4 * sign);
footPos.rotateZ(-leg0 * sign);
footPos.rotateX(pi_4 * sign);
footPos.rotateX(-leg1 * sign);
footPos.rotateY(leg2);
footPos.translate(0, 0, -robotDimensions.upperLegLength);
footPos.rotateY(leg3);
footPos.translate(0, 0, -robotDimensions.lowerLegLength);
return Vector3f(footPos.translation.x(), footPos.translation.y(), footPos.translation.z());
}
int main()
{
//Model Initialization
Leph::HumanoidFixedModel model(Leph::SigmabanModel);
//Inverse kinematics target
bool isSuccess;
Eigen::Vector3d trunkPos(0.1, -0.05, 0.20);
Eigen::Vector3d trunkAxis(0.0, 0.0, -0.3);
Eigen::Vector3d footPos(0.0, -0.10, 0.0);
Eigen::Vector3d footAxis(0.0, 0.0, -0.6);
Leph::ModelViewer viewer(1200, 900);
double freq = 50.0;
Leph::Scheduling scheduling;
scheduling.setFrequency(freq);
Leph::Plot plot;
double t = 0.0;
while (viewer.update()) {
//Display model
Leph::ModelDraw(model.get(), viewer);
//Waiting
scheduling.wait();
//Update inverse kinematics
if (t >= 3.0) {
trunkPos.y() = -0.02 + 0.05*sin(1.5*3.14*0.1*t);
footAxis.z() = -0.4 + 0.4*sin(2.0*3.14*0.1*t);
}
isSuccess = model.trunkFootIK(
Leph::HumanoidFixedModel::LeftSupportFoot,
trunkPos,
Leph::AxisToMatrix(trunkAxis),
footPos,
Leph::AxisToMatrix(footAxis));
if (!isSuccess) {
std::cout << "IK Error" << std::endl;
return 1;
}
model.get().setDOF("base_x", 0.2*sin(3.0*3.14*t*0.1));
model.get().setDOF("base_y", 0.2);
model.get().setDOF("base_yaw", 1.5*sin(2.0*3.14*t*0.1));
//Left support
std::cout << "LEFT SUPPORT:" << std::endl;
Eigen::VectorXd forceLeftSupport(6);
Eigen::VectorXd forceLeftFoot(6);
model.setSupportFoot(Leph::HumanoidFixedModel::LeftSupportFoot);
Eigen::VectorXd tauDoubleLeft =
model.get().inverseDynamicsClosedLoop("right_foot_tip", &forceLeftFoot, false);
//Convert support contact force
//in left support foot frame
Eigen::Matrix3d matLeft = model.get().orientation("left_foot_tip", "origin");
forceLeftSupport(3) = tauDoubleLeft(0);
forceLeftSupport(4) = tauDoubleLeft(1);
forceLeftSupport(5) = tauDoubleLeft(2);
forceLeftSupport(0) = tauDoubleLeft(5);
forceLeftSupport(1) = tauDoubleLeft(4);
forceLeftSupport(2) = tauDoubleLeft(3);
forceLeftSupport.segment(3, 3) = matLeft * forceLeftSupport.segment(3, 3);
//Right support
std::cout << "RIGHT SUPPORT:" << std::endl;
Eigen::VectorXd forceRightSupport(6);
Eigen::VectorXd forceRightFoot(6);
model.setSupportFoot(Leph::HumanoidFixedModel::RightSupportFoot);
Eigen::VectorXd tauDoubleRight =
model.get().inverseDynamicsClosedLoop("left_foot_tip", &forceRightFoot, false);
//Convert support contact force
//in right support foot frame
Eigen::Matrix3d matRight = model.get().orientation("right_foot_tip", "origin");
forceRightSupport(3) = tauDoubleRight(0);
forceRightSupport(4) = tauDoubleRight(1);
forceRightSupport(5) = tauDoubleRight(2);
forceRightSupport(0) = tauDoubleRight(5);
forceRightSupport(1) = tauDoubleRight(4);
forceRightSupport(2) = tauDoubleRight(3);
forceRightSupport.segment(3, 3) = matRight * forceRightSupport.segment(3, 3);
//Check that double support torques are the same
//when computed from left and right support (kinematic root)
for (const std::string& name : Leph::NamesDOF) {
model.setSupportFoot(Leph::HumanoidFixedModel::LeftSupportFoot);
size_t indexLeft = model.get().getDOFIndex(name);
model.setSupportFoot(Leph::HumanoidFixedModel::RightSupportFoot);
size_t indexRight = model.get().getDOFIndex(name);
if (fabs(tauDoubleLeft(indexLeft)-tauDoubleRight(indexRight)) > 1e-6) {
std::cout << "ERROR mismatch TORQUE name=" << name << std::endl;
std::cout << name << " "
<< "Left:" << indexLeft << ": " << tauDoubleLeft(indexLeft)
<< " Right:" << indexRight << ": " << tauDoubleRight(indexRight) << std::endl;
exit(1);
}
}
//Check that contact forces computed from support foot
//and from flying foot with the other
//support foot are the same
if ((forceLeftSupport-forceRightFoot).norm() > 1e-5) {
std::cout << "ERROR mismatch FORCE left foot: " << std::endl;
std::cout << forceLeftSupport.transpose() << std::endl;
std::cout << forceRightFoot.transpose() << std::endl;
exit(1);
}
if ((forceRightSupport-forceLeftFoot).norm() > 1e-5) {
std::cout << "ERROR mismatch FORCE right foot: " << std::endl;
std::cout << forceRightSupport.transpose() << std::endl;
std::cout << forceLeftFoot.transpose() << std::endl;
exit(1);
}
std::cout << "LeftSupport: "
<< forceLeftSupport(0) << " "
<< forceLeftSupport(1) << " "
<< forceLeftSupport(2) << " "
<< forceLeftSupport(3) << " "
<< forceLeftSupport(4) << " "
<< forceLeftSupport(5) << " "
<< std::endl;
std::cout << "RightFoot: "
<< forceRightFoot(0) << " "
<< forceRightFoot(1) << " "
<< forceRightFoot(2) << " "
<< forceRightFoot(3) << " "
<< forceRightFoot(4) << " "
<< forceRightFoot(5) << " "
<< std::endl;
std::cout << "LeftFoot: "
<< forceLeftFoot(0) << " "
<< forceLeftFoot(1) << " "
<< forceLeftFoot(2) << " "
<< forceLeftFoot(3) << " "
<< forceLeftFoot(4) << " "
<< forceLeftFoot(5) << " "
<< std::endl;
std::cout << "RightSupport: "
<< forceRightSupport(0) << " "
<< forceRightSupport(1) << " "
<< forceRightSupport(2) << " "
<< forceRightSupport(3) << " "
<< forceRightSupport(4) << " "
<< forceRightSupport(5) << " "
<< std::endl;
t += 0.01;
}
return 0;
}
