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Robotics Dictionary

100 robotics terms from A to Z

A

Accuracy
The ability of a robot to move to a commanded position. Typically lower than repeatability.
Agricultural Robot
A robot for farming tasks such as planting, weeding, harvesting, and crop monitoring. View companies →
AGV (Automated Guided Vehicle)
A mobile robot that follows fixed paths using magnetic tape, wires, or markers. Simpler but less flexible than AMRs. View companies →
AMR (Autonomous Mobile Robot)
A mobile robot that navigates dynamically using sensors and AI, without requiring fixed infrastructure like tracks or markers. View companies →
Articulated Robot
A robot arm with rotary joints, typically 4-7 axes. The most common type of industrial robot. View companies →
Automation
Using technology to perform tasks with minimal human intervention.
AUV (Autonomous Underwater Vehicle)
A self-propelled underwater robot that operates without real-time human control. View companies →

B

Backlash
The amount of play or looseness in a gear train. Must be minimized in precision robots.
Behavior Cloning
Imitation learning that directly copies demonstrated actions.
Bin Picking
Picking objects from an unstructured pile. Challenging due to recognition and grasp planning.

C

Cartesian Robot
A robot that moves in straight lines along X, Y, and Z axes. Also called gantry robots when mounted overhead. View companies →
Cobot (Collaborative Robot)
A robot designed to work safely alongside humans without safety cages. Cobots feature force-limiting technology and built-in safety systems. View companies →
Compliance
The ability of a robot to yield to external forces. Essential for safe human-robot interaction.
Computer Vision
Enabling computers to interpret visual information from cameras. Core robot perception technology. View companies →
Cycle Time
The time required for a robot to complete one full operation cycle.

D

DDS
Data Distribution Service. Middleware standard for real-time data exchange.
Degrees of Freedom (DOF)
The number of independent parameters that define a robot's configuration.
Delta Robot
A parallel robot with three arms connected to a common base. Known for extremely high speed in pick-and-place. View companies →
Depth Camera
A camera that captures distance information for each pixel, creating a 3D scene representation.
Dexterous Hand
A multi-fingered robotic hand capable of complex manipulation. Typically 15+ degrees of freedom.
Dexterous Manipulation
Manipulating objects with human-like dexterity using multi-fingered hands.
Diffusion Policy
A control policy based on diffusion models that generates action sequences by denoising random noise.
Digital Twin
A virtual replica of a physical robot that mirrors its behavior in real-time.
Domain Randomization
Varying simulation parameters during training to produce policies robust to real-world variation.
Drone / UAV
Unmanned Aerial Vehicle. An aircraft operated without a human pilot aboard. View companies →

E

E-Stop (Emergency Stop)
A safety device that immediately halts robot motion when activated.
Embodied AI
AI systems learning through physical interaction with the world. Robots are the primary platform.
Encoder
A sensor that measures position or speed of a rotating shaft. Essential for robot joint feedback.
End Effector
The device attached to a robot arm's end that interacts with the environment.
Exoskeleton
A wearable robotic device that augments human strength, endurance, or mobility.

F

Fleet Learning
Multiple robots sharing experiences and learning collectively across deployed systems.
Force/Torque Sensor
Measures forces and torques, typically between robot wrist and end effector.
Forward Kinematics
Calculating end effector position and orientation given joint angles.
Foundation Model
A large AI model trained on broad data adaptable to various tasks. Emerging for general-purpose robots. View companies →
Functional Safety
Safety depending on systems functioning correctly, including safety-related control systems.

G

Gazebo
Open-source 3D robot simulator. Provides physics simulation and environment modeling. View companies →
Gripper
An end effector designed to grasp and hold objects. Types include parallel jaw, vacuum, and soft.

H

Harmonic Drive
A compact, high-ratio gear system commonly used in robot joints. Zero backlash.
Human-Robot Interaction (HRI)
The study of interactions between humans and robots: communication, collaboration, and safety.
Humanoid Robot
A robot designed to resemble the human body in form, typically featuring bipedal locomotion, two arms, a torso, and a head. View companies →

I

Imitation Learning
Training robots by demonstrating desired behaviors. Also called learning from demonstration (LfD).
IMU (Inertial Measurement Unit)
A sensor combining accelerometers and gyroscopes to measure acceleration and rotation.
Industrial Robot
A programmable, automatically controlled manipulator designed for manufacturing applications. Typically operates in caged areas. View companies →
Industry 4.0
The fourth industrial revolution: smart factories, IoT, AI, and cyber-physical systems.
Inverse Kinematics (IK)
Calculating joint angles needed to achieve a desired end effector position.
ISO 10218
International standard specifying safety requirements for industrial robots.
ISO/TS 15066
Technical specification for collaborative robot safety, defining power and force limits.

L

Large Language Model (LLM)
An AI model trained on vast text data for understanding and generating language.
LiDAR
Light Detection and Ranging. Measures distance by illuminating targets with laser light. View companies →
Lights-Out Manufacturing
Fully automated production operating without human presence or lighting.

M

Model Predictive Control (MPC)
Uses a model to predict future behavior and optimizes control actions over a time horizon.
Motion Planning
The broader problem of planning robot movements including path planning and obstacle avoidance.
MoveIt
Open-source motion planning framework for ROS. Manipulation, planning, and collision checking. View companies →

O

Object Detection
Locating and classifying objects within an image. Foundation for robot perception.
Odometry
Using motion sensor data to estimate position change over time. Subject to cumulative drift.
OEE (Overall Equipment Effectiveness)
Metric combining availability, performance, and quality to measure productivity.
OPC UA
Open Platform Communications Unified Architecture. Industrial communication standard.

P

Path Planning
Computing a collision-free trajectory for a robot to move between configurations.
Payload
The maximum weight a robot can carry at its end effector while maintaining specified performance.
Pick and Place
Picking up an object from one location and placing it at another. Core manufacturing operation.
PID Control
Proportional-Integral-Derivative control. A fundamental feedback control algorithm in robotics.
Point Cloud
A set of 3D points representing external surface of objects, from LiDAR or depth cameras.

Q

Quadruped Robot
A four-legged robot designed for locomotion across varied terrain. Examples include Boston Dynamics' Spot.
Quick-Change System
Mechanism for rapid, automatic exchange of end effectors.

R

Reach
The maximum distance from the robot's base to its end effector.
Reinforcement Learning (RL)
Learning optimal behaviors through trial and error with rewards. Increasingly used for robot control. View companies →
Repeatability
The ability of a robot to return to the same position repeatedly. Measured in millimeters (e.g., ±0.01mm).
Risk Assessment
Systematic process of identifying hazards and evaluating risks for robot applications.
Robot Density
Industrial robots per 10,000 manufacturing employees. Key automation adoption metric.
ROI (Return on Investment)
Profitability measure comparing cost savings against purchase and operating costs.
ROS (Robot Operating System)
Open-source middleware framework for robot software development. Not actually an OS. View companies →
ROS 2
Second generation ROS, redesigned for real-time performance, security, and production use. View companies →
ROV (Remotely Operated Vehicle)
An underwater robot controlled by an operator on the surface via a tether. View companies →

S

Safety Scanner
A laser-based device monitoring an area and triggering safety actions on intrusion.
SCARA Robot
Selective Compliance Assembly Robot Arm. Has parallel rotary joints providing compliance in X-Y while rigid in Z-axis. View companies →
Semantic Segmentation
Classifying each pixel in an image into categories. Enables robots to understand scenes.
Service Robot
A robot that performs useful tasks outside of industrial manufacturing, including cleaning, delivery, and hospitality. View companies →
Servo
A motor with feedback control that can accurately maintain position, velocity, or torque.
Sim-to-Real
Training robot controllers in simulation and transferring to physical robots.
Simulation
Virtual environments for testing robot software without physical hardware. View companies →
Singularity
A robot configuration where two or more axes align, causing loss of degrees of freedom.
SLAM
Simultaneous Localization and Mapping. Builds a map while tracking the robot's location within it.
Smart Factory
A manufacturing facility using connected systems and automation to optimize production.
Space Robot
A robotic system for space environments: planetary rovers, satellite servicing, orbital assembly. View companies →
Surgical Robot
A robotic system that assists surgeons in performing minimally invasive procedures with enhanced precision. View companies →
System Integrator
A company that designs, builds, and installs complete robot systems.

T

Tactile Sensor
Detects physical contact, pressure, or texture. Enables robots to 'feel' objects.
TCO (Total Cost of Ownership)
Complete cost over a robot system's lifetime including purchase, installation, and maintenance.
Teach Pendant
A handheld device for manually controlling and programming industrial robots.
Teleoperation
Remote control of a robot by a human operator. Used for dangerous tasks and data collection.
Tool Center Point (TCP)
A reference point at the end effector used for programming and control.
Trajectory
A time-parameterized path specifying position, velocity, and acceleration at each point.

U

UGV (Unmanned Ground Vehicle)
A vehicle that operates on the ground without a human operator aboard. View companies →
URDF
Unified Robot Description Format. XML format for representing robot models in ROS.

V

Vision-Language Model (VLM)
An AI model understanding both images and text. Enables robots to follow natural language instructions.
VLA (Vision-Language-Action Model)
Takes visual observations and language instructions, directly outputs robot actions.

W

Warehouse Robot
A robot for logistics and fulfillment including picking, packing, sorting, and transporting goods. View companies →
Work Envelope
The three-dimensional space within which a robot can position its end effector.
World Model
An internal model predicting environment changes from actions. Enables planning by simulation.

Z

Zero-Shot Transfer
Performing a task never explicitly trained on, leveraging general knowledge from pretraining.