Exploring the Four-Wheel Steering System

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Chapter 3
Description of the system
Detailed description of the system
The four wheel steering system is a relatively new technique to control the vehicle. In this system we can control the four wheels of the vehicle to make tighter turns and cornering in the space available in the industries. It makes the controlling of the vehicle easy and less time consuming. We can compare it with the AGVs used in industries to transport the goods and material to the workplace. The system is different from the AGV in terms of steering control and path decision. The steering control of the AGV is either front wheels or rear wheels. AGV works on the decided path and sometimes it takes time to move to the specific location. With the help of four wheel steering …show more content…

The larger a sprocket is, the less the working load for a given amount of transmitted power, allowing the use of a smaller-pitch chain. However, chain speeds should be kept less than 1200 feet per minute. The dimensions of a sprocket can be calculated as follows, where P is the pitch of the chain, and N is the number of teeth on the sprocket.
Pitch Diameter = P ÷ sin (180° ÷ N) Outside Diameter = P × (0.6 + cot (180° ÷ N))
Sprocket thickness = 0.93 × Roller Width - 0.006"

CHAINS:
Chain length calculation
Chain length is a function of the number of teeth of the drive and driven sprockets as well as the center-to-center distance.
Turning Radius calculation
• The turning circle of a car is the diameter of the circle described by the outside wheels when turning on full lock. There is no hard and fast formula to calculate the turning circle but we can get close by using this:
Turning circle radius = (track/2) + (wheelbase/sin (average steer angle))

• NORMAL STEERING(0-30)
Turning circle radius = (track/2) + (wheelbase/sin (average steer angle)) = (1.219/2) + (0.610/sin 20) =2.39 m
• Four wheel

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