message: simulation stable joint position example
diff: @@ -60,7 +60,7 @@ bool JointPositionExampleController::init(
  void JointPositionExampleController::update(const ros::Time& /*time*/,
  const ros::Duration& period) {
  double delta_angle =
  - M_PI / 16 * (1 - std::cos(M_PI / 5.0 * elapsed_time_.toSec()));
  + M_PI / 16 * (1 - std::cos(M_PI / 5.0 * elapsed_time_.toSec())) * 0.2;
  for (size_t i = 0; i < 7; ++i) {
  if (i == 4) {
  position_joint_handles_[i].setCommand(initial_pose_[i] - delta_angle);
  