NEXVIORA ROBOTICS

A shared language for building.

Clear definitions for the terms you will meet throughout the learning path.

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28 terms

Action: Goal-based ROS communication with feedback, result and cancellation.
AMCL: Particle-filter localization inside an existing map.
Bridge: Configured translation between selected communication interfaces.
Callback: Function invoked when a message, timer or event is ready.
Calibration: Measuring model/sensor parameters rather than assuming nominal values.
Colcon: Build tool for sets of packages in ROS 2 workspaces.
Costmap: Navigation costs representing obstacles and clearance policies.
Covariance: Numerical uncertainty and correlations in an estimate.
Differential drive: Motion controlled through left and right wheel speeds.
EKF: Extended Kalman filter combining a nonlinear model with uncertain observations.
Encoder: Sensor measuring shaft displacement, often as pulses.
Frame: Coordinate system for a pose, direction or observation.
Gazebo: World, robot, sensor and physics simulator.
IMU: Sensor for angular velocity and acceleration.
Jazzy: Pinned ROS 2 distribution in this path.
LiDAR: Range measurements along light rays.
Localization: Estimating position relative to a map or reference.
Nav2: ROS 2 navigation framework.
Node: Running participant in the ROS graph.
Odometry: Local motion estimate that usually accumulates drift.
PID: Controller using proportional, integral and derivative errors.
QoS: Communication behavior and compatibility settings.
RViz: ROS visualization; display is not physics simulation.
SLAM: Estimating motion while constructing a map.
TF2: Relationships between coordinate frames over time.
Topic: Named typed stream connecting publishers/subscribers.
URDF: XML links/joints robot description.
Watchdog: Detects expired activity and triggers a defined response.