components-of-robot

Actuators:
Actuators are the devices that are responsible for moving and controlling a system or machine.ctuators are the energy conversion device used inside a robot. The major function of actuators is to convert energy into movement.
Power Supply:
It is an electrical device that supplies electrical power to an electrical load.The working power to the robot is provided by batteries, hydraulic, solar power, or pneumatic power sources.
Sensor:
Sensors provide real time information on the task environment. Sensors are the devices or machines which help to detect the events or changes in the environment and send data to the computer processor. 
Electric Motors: 
These are the devices that convert electrical energy into mechanical energy and are required for the rotational motion of the machines.
Controller -
Controller is a part of robot that coordinates all motion of the mechanical system. It also receives an input from immediate environment through various sensors. The heart of robot's controller is a microprocessor linked with the input/output and monitoring device.