“Whereas with the mini cheetah, if you wanted to add another arm, you could just add three or four more of these modular motors.”

“In Cheetah 3, everything is super integrated, so if you want to change something, you have to do a ton of redesign,” Katz says. The mini cheetah is more than just a miniature version of its predecessor, Cheetah 3, a large, heavy, formidable robot, which often needs to be stabilized with tethers to protect its expensive, custom-designed parts. “Eventually, I’m hoping we could have a robotic dog race through an obstacle course, where each team controls a mini cheetah with different algorithms, and we can see which strategy is more effective,” Kim says. Kim says loaning mini cheetahs out to other research groups gives engineers an opportunity to test out novel algorithms and maneuvers on a highly dynamic robot, that they might not otherwise have access to. “A big part of why we built this robot is that it makes it so easy to experiment and just try crazy things, because the robot is super robust and doesn’t break easily, and if it does break, it’s easy and not very expensive to fix,” says Katz, who worked on the robot in the lab of Sangbae Kim, associate professor of mechanical engineering. They are currently building more of the four-legged machines, aiming for a set of 10, each of which they hope to loan out to other labs. The researchers will present the mini cheetah’s design at the International Conference on Robotics and Automation, in May. “You could put these parts together, almost like Legos,” says lead developer Benjamin Katz, a technical associate in MIT’s Department of Mechanical Engineering. Each motor can easily be swapped out for a new one. Continued abuse of our services will cause your IP address to be blocked indefinitely.In the event that a limb or motor does break, the mini cheetah is designed with modularity in mind: Each of the robot’s legs is powered by three identical, low-cost electric motors that the researchers engineered using off-the-shelf parts. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior.

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