For those who’ve handled robots or different wheeled initiatives, you’ve in all probability heard of mecanum wheels. These seemingly magic wheels have the power to maneuver in any route. For those who’ve ever seen one, it’s fairly apparent the way it works. They give the impression of being kind of like unusual wheels, however additionally they have rollers that rotate off-axis by 45 levels from the conventional motion axis. This causes the wheel’s driving power to maneuver at a forty five diploma angle. Nevertheless, there are a whole lot of particulars that aren’t obvious from a fast look. Why are the rollers tapered? How do you management a car utilizing these wheels? [Lesics] has a good explanation of how the wheels work in a current video which you could see beneath.
With 4 wheels, you possibly can have a pair of wheels — one on the entrance proper and one on the again left — which have a internet power vector of +45 levels. Then the opposite pair of wheels could be constructed in another way to have a internet power vector of -45 levels. The video exhibits how transferring some or all wheels in several instructions can transfer the car in many alternative instructions.
It’s straightforward to confuse mecanum wheels with omniwheels, however they’re totally different. Whereas each have a primary wheel with rollers, the omniwheel has rollers at a 90 diploma angle to the primary axis to allow them to slide in that route. These are normally utilized in a triangular configuration generally known as the Kiwi drive. Mecanum wheels usually are not with out their disadvantages, together with value. Nevertheless, you possibly can make your own.