God created legs for locomotion and man created wheels for the same purpose, which is one of the greatest inventions in human era. Wheels are your best bet for robots as they are easy to design, implement and practical for robots that require speed. They also do not suffer from static or dynamic stability as the center of gravity of robot does not change when they are in motion or just standing still and do not require complex models, designs and algorithms. The disadvantage is that they are not stable on uneven or rough terrain and also on extremely smooth surfaces as they tend to slip and skid.
There are different types of wheels used in Robots. Each wheel is designed to work best in certain situations, and what you choose should be based on your robot requirement and the environment it has work in.
Some of the most common wheels used in robots are:
In the next section, we will understand each wheel in detail.