Module 11 : Example study of robots
Lecture 40 : NATARAJ – a case study of a 6-legged robot
Mobile Robots
The focus of the course has been on Industrial robots, which are by and large fixed robots. However, there are many instances when one would like to have a mobile robot.
 
A mobile robot is a robot that is capable of going from one place to another.
Some capabilities required in a mobile robot are:
 
Means of locomotion, i.e., wheels, legs, wings, etc.
 
Navigation, i.e., line following, target seeking, obstacle avoidance, navigation using maps, map building, self localization, etc.
     
   
Single leg hopping robot
Some early humanoid robots
  Legged Robots
  Advantages

Flamingo – a biped using serial elastic actuators Leg Lab MIT
Prepared surface not essential
Continuous surface not essential
Legged mobile robots can work in environments designed for human beings where wheeled robots cannot be used.
 
Active suspension
Can be made contaminant proof by clothing
  Disadvantages:
Greater complexity of hardware
Greater demand on actuator due to self weight
Greater complexity of control and coordination