(Buy) 90 DEGREE STEERING SYSTEM WITH HIGH TORQUE DC MOTOR / Differential wheeled robot
Introduction To Steering:
Steering is the collection of components, linkages, etc. which allow a vessel (ship, boat) or vehicle (car, motorcycle, bicycle) to follow the desired course. An exception is the case of rail transport by which rail tracks combined together with railroad switches (and also known as 'points' in British English) provide the steering function.
Hi today we are going to discuss some of the basics of physical designing and selecting a chassis for a 4 wheel drive Robot for beginners. For this topic we are specifically going to see some of the design oriented challenges that come in the way of designing a 4 wheel robot that uses Differential Steering for taking turns (left and right) or to make a Complete 90 Degree in-place (pivot) rotation (zero-radius turning). Attention to some basic details can help a beginner to make an efficient robot without loss of much energy and torque.
There are many approaches that can be followed for steering a 4 wheel robot, such as the famous car-type steering (Ackerman steering), Cab-Drive Steering, Omni Directional wheels and the Differential Steering method, where the speed of the wheels is altered to change the direction or to take turns.
|90 DEGREE STEERING SYSTEM WITH HIGH TORQUE DC MOTOR|
Ackerman and Cab-Drive steering requires complex design and additional drivers, servos and logic to control the robot, we will see these modes of steering in the later tutorials, For the beginners perspective it is good to start with the basic Differential Steering method, which for a simple model usually does not require any additional motors or mechanism.
The most conventional steering arrangement is to turn the front wheels using a hand–operated steering wheel which is positioned in front of the driver, via the steering column, which may contain universal joints (which may also be part of the collapsible steering column design), to allow it to deviate somewhat from a straight line. Other arrangements are sometimes found on different types of vehicles, for example, a tiller or rear–wheel steering. Tracked vehicles such as bulldozers and tanks usually employ differential steering — that is, the tracks are made to move at different speeds or even in opposite directions, using clutches and brakes, to bring about a change of course or direction.
A differential wheeled robot is a mobile robot whose movement is based on two separately driven wheels placed on either side of the robot body. It can thus change its direction by varying the relative rate of rotation of its wheels and hence does not require an additional steering motion.
To balance the robot, additional wheels or casters may be added.