More common in robots are fixed-wheel steered robots. This is where the wheels' axes are fixed in relation to the chassis. The relative speed of each wheel or set of wheels sets the direction of the robot. That is, the wheels will not turn from side to side; however, by one side going faster than the other, the robot can make turns. The common use case for this is known as skid steering. Look at the following diagram:
Fixed wheel steering or skid steering
The diagram above shows this in action. In this case, the white arrows show the relative speed of the motors. The green arrows show the direction of the robot:
- In the first ...
