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/* |
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* Copyright 2015, Andrea Del Prete, LAAS-CNRS |
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* |
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*/ |
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#include <dynamic-graph/factory.h> |
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#include <sot/core/debug.hh> |
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#include <sot/core/stop-watch.hh> |
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#include <sot/torque_control/commands-helper.hh> |
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#include <sot/torque_control/position-controller.hh> |
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namespace dynamicgraph { |
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namespace sot { |
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namespace torque_control { |
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namespace dynamicgraph = ::dynamicgraph; |
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using namespace dynamicgraph; |
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using namespace dynamicgraph::command; |
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using namespace std; |
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// Size to be aligned "-------------------------------------------------------" |
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#define PROFILE_PWM_DES_COMPUTATION \ |
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"PositionController: desired pwm computation " |
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#define GAIN_SIGNALS m_KpSIN << m_KdSIN << m_KiSIN |
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#define REF_JOINT_SIGNALS m_qRefSIN << m_dqRefSIN |
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#define STATE_SIGNALS m_base6d_encodersSIN << m_jointsVelocitiesSIN |
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#define INPUT_SIGNALS STATE_SIGNALS << REF_JOINT_SIGNALS << GAIN_SIGNALS |
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#define OUTPUT_SIGNALS m_pwmDesSOUT << m_qErrorSOUT |
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/// Define EntityClassName here rather than in the header file |
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/// so that it can be used by the macros DEFINE_SIGNAL_**_FUNCTION. |
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typedef PositionController EntityClassName; |
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typedef Eigen::Matrix<double, Eigen::Dynamic, 1> VectorN; |
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typedef Eigen::Matrix<double, Eigen::Dynamic, 1> VectorN6; |
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/* --- DG FACTORY ---------------------------------------------------- */ |
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DYNAMICGRAPH_FACTORY_ENTITY_PLUGIN(PositionController, "PositionController"); |
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/* ------------------------------------------------------------------- */ |
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/* --- CONSTRUCTION -------------------------------------------------- */ |
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/* ------------------------------------------------------------------- */ |
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PositionController::PositionController(const std::string& name) |
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: Entity(name), |
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CONSTRUCT_SIGNAL_IN(base6d_encoders, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(jointsVelocities, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(qRef, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(dqRef, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(Kp, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(Kd, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_IN(Ki, dynamicgraph::Vector), |
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CONSTRUCT_SIGNAL_OUT(pwmDes, dynamicgraph::Vector, INPUT_SIGNALS), |
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CONSTRUCT_SIGNAL_OUT(qError, dynamicgraph::Vector, |
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m_base6d_encodersSIN << m_qRefSIN), |
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m_robot_util(RefVoidRobotUtil()), |
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m_initSucceeded(false) { |
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Entity::signalRegistration(INPUT_SIGNALS << OUTPUT_SIGNALS); |
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/* Commands. */ |
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addCommand("init", makeCommandVoid2( |
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*this, &PositionController::init, |
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docCommandVoid2("Initialize the entity.", |
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"Time period in seconds (double)", |
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"Reference to the robot (string)"))); |
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addCommand("resetIntegral", |
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makeCommandVoid0(*this, &PositionController::resetIntegral, |
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docCommandVoid0("Reset the integral."))); |
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} |
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void PositionController::init(const double& dt, const std::string& robotRef) { |
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if (dt <= 0.0) return SEND_MSG("Timestep must be positive", MSG_TYPE_ERROR); |
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if (!m_base6d_encodersSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal base6d_encoders is not plugged", |
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MSG_TYPE_ERROR); |
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if (!m_jointsVelocitiesSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal jointsVelocities is not plugged", |
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MSG_TYPE_ERROR); |
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if (!m_qRefSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal qRef is not plugged", MSG_TYPE_ERROR); |
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if (!m_dqRefSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal dqRef is not plugged", MSG_TYPE_ERROR); |
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if (!m_KpSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal Kp is not plugged", MSG_TYPE_ERROR); |
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if (!m_KdSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal Kd is not plugged", MSG_TYPE_ERROR); |
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if (!m_KiSIN.isPlugged()) |
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return SEND_MSG("Init failed: signal Ki is not plugged", MSG_TYPE_ERROR); |
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/* Retrieve m_robot_util informations */ |
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std::string localName(robotRef); |
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if (isNameInRobotUtil(localName)) |
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m_robot_util = getRobotUtil(localName); |
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else { |
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SEND_MSG("You should have an entity controller manager initialized before", |
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MSG_TYPE_ERROR); |
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return; |
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} |
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m_dt = dt; |
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m_pwmDes.setZero(m_robot_util->m_nbJoints); |
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m_q.setZero(m_robot_util->m_nbJoints + 6); |
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m_dq.setZero(m_robot_util->m_nbJoints); |
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resetIntegral(); |
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m_initSucceeded = true; |
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} |
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void PositionController::resetIntegral() { |
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m_e_integral.setZero(m_robot_util->m_nbJoints); |
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} |
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/* ------------------------------------------------------------------- */ |
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/* --- SIGNALS ------------------------------------------------------- */ |
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/* ------------------------------------------------------------------- */ |
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DEFINE_SIGNAL_OUT_FUNCTION(pwmDes, dynamicgraph::Vector) { |
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if (!m_initSucceeded) { |
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SEND_WARNING_STREAM_MSG( |
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"Cannot compute signal pwmDes before initialization!"); |
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return s; |
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} |
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getProfiler().start(PROFILE_PWM_DES_COMPUTATION); |
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{ |
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const VectorN& Kp = m_KpSIN(iter); // n |
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const VectorN& Kd = m_KdSIN(iter); // n |
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const VectorN6& q = m_base6d_encodersSIN(iter); // n+6 |
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const VectorN& dq = m_jointsVelocitiesSIN(iter); // n |
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const VectorN& qRef = m_qRefSIN(iter); // n |
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const VectorN& dqRef = m_dqRefSIN(iter); // n |
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assert(q.size() == static_cast<Eigen::VectorXd::Index>( |
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m_robot_util->m_nbJoints + 6) && |
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"Unexpected size of signal base6d_encoder"); |
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assert(dq.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal dq"); |
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assert(qRef.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal qRef"); |
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assert(dqRef.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal dqRef"); |
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assert(Kp.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal Kd"); |
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assert(Kd.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal Kd"); |
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m_pwmDes = Kp.cwiseProduct(qRef - q.tail(m_robot_util->m_nbJoints)) + |
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Kd.cwiseProduct(dqRef - dq); |
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if (s.size() != |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints)) |
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s.resize(m_robot_util->m_nbJoints); |
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s = m_pwmDes; |
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} |
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getProfiler().stop(PROFILE_PWM_DES_COMPUTATION); |
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return s; |
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} |
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DEFINE_SIGNAL_OUT_FUNCTION(qError, dynamicgraph::Vector) { |
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if (!m_initSucceeded) { |
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SEND_MSG("Cannot compute signal qError before initialization!", |
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MSG_TYPE_WARNING_STREAM); |
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return s; |
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} |
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const VectorN6& q = m_base6d_encodersSIN(iter); // n+6 |
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const VectorN& qRef = m_qRefSIN(iter); // n |
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assert(q.size() == static_cast<Eigen::VectorXd::Index>( |
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m_robot_util->m_nbJoints + 6) && |
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"Unexpected size of signal base6d_encoder"); |
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assert(qRef.size() == |
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static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints) && |
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"Unexpected size of signal qRef"); |
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if (s.size() != static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints)) |
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s.resize(m_robot_util->m_nbJoints); |
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s = qRef - q.tail(m_robot_util->m_nbJoints); |
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return s; |
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} |
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/* --- COMMANDS ---------------------------------------------------------- */ |
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/* ------------------------------------------------------------------- */ |
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/* --- ENTITY -------------------------------------------------------- */ |
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/* ------------------------------------------------------------------- */ |
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void PositionController::display(std::ostream& os) const { |
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os << "PositionController " << getName(); |
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try { |
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getProfiler().report_all(3, os); |
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} catch (ExceptionSignal e) { |
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} |
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} |
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} // namespace torque_control |
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} // namespace sot |
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} // namespace dynamicgraph |