Guinness record: Student robot solves Rubick's Cube in 0.1 seconds
The Guinness record for solving Mitsubishi's Rubik's Cube has been broken by a team of students. They put a lot of work into the system.
"Purdubik's Cube" solves the Rubik's Cube in less than the blink of an eye.
(Image: Purdue University Elmore Family School of Electrical Computer Engineering (Screenshot))
A team of students from the Elmore Family School of Electrical Computer Engineering at Purdue University have succeeded in solving a Rubik's Cube (commonly known as a “Rubik's Cube”) in 0.103 seconds with their “Purdubik's Cube” robot. The students pulverized the previous Guinness record of 0.305 seconds, which was held by the Mitsubishi Electric Corporation.
Mitsubishi held the Guinness record for just under a year. At that time, the company had only managed to beat the previous record by 0.075 seconds. The current attempt by the Purdue University students is a third of the previous record time and represents a significantly greater leap. The “Purdubik's Cube” robot can now completely restore the six colored faces of the Rubik's Cube in less than the blink of an eye, which takes between 200 and 300 ms.
The student team faced all kinds of challenges to solve the Rubik's Cube so quickly. First, they developed a color recognition system based on machine vision. This allows the colored areas to be analyzed in just a few milliseconds and the next steps for solving the Rubik's Cube to be calculated. To do this, the team uses specially developed solution algorithms that have been optimized for execution time. The students use these to control six motors that move the individual rotation planes of the cube.
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The students reinforced the mechanics inside the cube so that the cube does not fly apart at high speeds due to the forces generated when it is released.
High-precision mechanics
The motors and control electronics come from Kollmorgen, a US specialist for industrial precision motors, drives, actuators, and control systems for autonomous vehicles and platforms. This enables the students to carry out very fast, finely tuned movements. This is because the main problem is to accelerate the motors as efficiently as possible and brake them again precisely. This is the only way to achieve precise and coordinated control in the sub-millisecond range.
The student team has also made solving the Rubik's cube interactive. Interested parties can use a Rubik's Cube equipped with Bluetooth to tell the magic cube of the “Purdubik's Cube” how it should be twisted. The robot then releases the cube at the touch of a button.
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With their project, the students have shown that the boundaries of high-speed data processing and modern automation can be pushed further and further. The team, which came together in the Cooperative Education Program (Co-op) at Purdue University, invested their money as well as their own work in the “Purdubiks's Cube” project. Sponsors also helped to realize the system.
(olb)
