2 Robot Drives

2.1 Introduction

How to move camera?

The camera rotates to view the status of environment in front of the robot which needs a high resolution of movement.

So we use the stepper motor to achieve this requirement.

How to drive and steer the robot?

The crawler type is drived and steered by two D.C motors. When the two D.C motors rotate at the same direction for example (CW), the robot will go forward. When the two D.C motors rotate at different directions (CCW), the robot will go backward. When the left D.C motor rotate in direction clockwise (CW) and the right one on counterclockwise direction (CCW), the robot will rotate to right. When the left D.C motor rotate (CCW) and the right one on (CW), the robot will rotate left.

2.1.1 Choosing the motors

At first step, we choose what type of motors to be used. Stepper motors are motors whose rotation can be controlled with a high precision. However, they require a pretty complex controller. DC motors are the most simple to control; it dominates the field of robot, either mobile or stationary.

D.C is used as the main power source for operating the onboard electronics, and for running the motors. Few robots use motors designed to operate from A.C, even those automations used in factories.