# ur_controllers This package contains controllers and hardware interface for ROS control that are special to the UR robot family. Currently this contains * A **speed_scaling_interface** to read the value of the current speed scaling into controllers. * A **scaled_joint_command_interface** that provides access to joint values and commands in combination with the speed scaling value. * A **speed_scaling_state_controller** that publishes the current value of the speed scaling to a topic interface. * A **scaled_joint_trajectory_controller** that is similar to the *joint_trajectory_controller*, but it uses the speed scaling reported by the robot to reduce progress in the trajectory.