Turning a model car with no steering.

AI Thread Summary
To turn a model car without steering, each wheel can be controlled independently using servos. Cutting power to the front left wheel while reducing the speed of the rear wheels can create a pivot effect for turning left. Alternatively, cutting power to the entire left side may also achieve the desired turn. Utilizing a skid-steer approach with different wheel speeds can effectively steer the vehicle. Implementing omni wheels can further reduce tire wear and eliminate the need for traditional steering mechanisms.
kpket
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Hi Guys,
If I were to build a model car, with each wheel having it's own servo, then how can I make it turn in one direction.
Say if I want to turn left, if I cut power to the front left and reduce the speed of the rare wheels will the front left wheel act as a pivot? Or should I cut power of the whole left side?
Is there anyway I can simulate this?
Cheers
Kris
 
Engineering news on Phys.org
Welcome to PF.
The skid steer loader has 4WD without directional wheel steering. The best geometry to use is a wide vehicle with a short wheelbase as that reduces tyre wear while turning.
http://en.wikipedia.org/wiki/Skid-steer_loader
 
Different speeds for each wheel will steer the car.
Omni wheels will completely eliminate wear from lateral motion without the need for a conventional differential or accommodations for Ackerman steering geometry.
 
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