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Which main parts do most robots need to operate?

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Although robots vary significantly in design and purpose, most require five essential components to function effectively:

  • Mechanical structure: This serves as the robot's body, determining its physical capabilities and range of motion.
  • Sensors: These collect data about the robot’s internal state or its surrounding environment, converting physical stimuli into electrical impulses.
  • Actuators: Acting as the robot's muscles, these components convert energy from the power supply into physical movement.
  • Control system: Often described as the robot's brain, this system processes information from sensors and directs the actions of the actuators.
  • Power supply: This provides the necessary energy, such as electricity from a battery, to operate the machine.12

Additionally, many robots are equipped with an "end effector"—a specialized device attached to the robot's wrist or arm—to perform specific tasks like gripping, welding, or drilling.3