Robotics is a domain in artificial intelligence that manages with the study of creating intelligent and proficient robots.
Robots are the artificial operators acting in real world environment.
Robots are planned for manipulating the objects by perceiving, picking, moving, modifying the physical properties of object, destroying it, or to have an impact thereby freeing manpower from doing repetitive functions without getting bored, distracted, or depleted.
Robotics is a branch of AI, which is composed of Electrical Engineering, Mechanical Engineering, and Computer Science for designing, development, and application of robots.
The robots have mechanical construction, form, or shape intended to accomplish a particular task.
They have electrical components which power and control the machinery.
They contain some level of computer program that figures out what, when and how a robot does something.
Here is the difference between both−
|They usually work in computer-stimulated worlds.||They work in real physical world|
|The input to an AI program is in symbols and rules.||Inputs to robots is analog signal in the form of speech waveform or pictures|
|They need general purpose computers to work on.||They need special hardware with sensors and effectors.|
Locomotion is the mechanism that makes a robot capable of moving in its environment. There are different types of locomotions −
This type of locomotion consumes more power while demonstrating walk, jump, trot, hop, climb up or down, etc.
It requires more number of motors to achieve a movement. It is appropriate for rough as well as smooth terrain where irregular or too smooth surface makes it consume more power for a wheeled locomotion. It is minimal difficult to implement because of stability issues.
It accompanies with the variety of one, two, four, and six legs. If a robot has multiple legs then leg coordination is necessary for locomotion.
The total number of possible gaits (a periodic sequence of lift and release events for each of the total legs) a robot can travel relies upon the number of its legs.
If a robot has k legs, then the number of possible events N = (2k-1)!.
In case of a two-legged robot (k=2), the number of possible events is N = (2k-1)! = (2*2-1)! = 3! = 6.
Hence there are six possible various events −
In case of k=6 legs, there are 39916800 possible events. Hence the complexity of robots is directly proportional to the number of legs.
It requires fewer number of motors to accomplish a movement. It is minimal easy to implement as there are less stability issues in case of more number of wheels. It is power efficient as compared to legged locomotion.
Standard wheel − Rotates around the wheel axle and around the contact
Castor wheel − Rotates around the wheel axle and the offset steering joint.
Swedish 45o and Swedish 90o wheels − Omni-wheel, rotates around the contact point, around the wheel axle, and around the rollers.
Ball or spherical wheel − Omnidirectional wheel, technically difficult to implement.
In this type, the vehicles use tracks as in a tank. The robot is guided by moving the tracks with various speeds in the same or opposite direction. It offers stability because of large contact area of track and ground.
Robots are built with the following −
Power Supply − The robots are powered by batteries, solar power, hydraulic, or pneumatic power sources.
Actuators − They convert energy into movement.
Electric motors (AC/DC) − They are required for rotational movement.
Pneumatic Air Muscles − They contract almost 40% when air is sucked in them.
Muscle Wires − They contract by 5% when electric current is passed through them.
Piezo Motors and Ultrasonic Motors − Best for industrial robots.
Sensors − They give information of real time information on the task environment. Robots are equipped with vision sensors to be to compute the depth in the environment. A tactile sensor imitates the mechanical properties of touch receptors of human fingertips.
This is a innovation of AI with which the robots can see. The computer vision plays vital role in the domains of safety, security, health, access, and entertainment.
Computer vision automatically removes, analyzes, and comprehends useful information from a single image or an array of pictures. This process involves development of algorithms to accomplish automatic visual comprehension.
This involves −
OCR − In the domain of computers, Optical Character Reader, a software to convert scanned documents into editable text, which accompanies a scanner.
Face Detection − Many state-of-the-art cameras come with this feature, which empowers to read the face and take the picture of that perfect expression. It is used to let a user access the software on right match.
Object Recognition − They are introduced in supermarkets, cameras, high-end cars such as BMW, GM, and Volvo.
Estimating Position − It is estimating position of an object with respect to camera as in position of tumor in human’s body.
The robotics has been instrumental in the various domains such as −
Industries − Robots are utilized for handling material, cutting, welding, color coating, drilling, polishing, etc.
Military − Autonomous robots can reach inaccessible and hazardous zones during war. A robot named Daksh, developed by Defense Research and Development Organization (DRDO), is in function to destroy life-threatening objects safely.
Medicine − The robots are capable of carrying out hundreds of clinical tests simultaneously, rehabilitating permanently disabled people, and performing complex surgeries, for example, brain tumors.
Exploration − The robot rock climbers utilized for space exploration, underwater drones used for ocean exploration are to name a few.
Entertainment − Disney’s engineers have created hundreds of robots for film making.