A team of students from Pardio University recently set a new Guinness World Record with its Customs Robot, which resolved Robc’s cube in just 0.103 seconds. It was about a third time when he took the previous record setting boot. But the new record was not only achieved by the construction of a robot that moves forward. Students used a combination of high -speed but low -razam camera systems, using a cubic -improved power custom, and a special solution to a special solution in human speed cubers.
In 2014, the race for Robot Arms solving Robc’s cube began, when a robot called Cubstorum 3, which had parts of Lego Mind Storms, and a Samsung Galaxy S4 solved the famous puzzle in 3.253 seconds-at that time was faster than any human or robot. –
Last May, Engineers of Dost Sibish Electric in Japan claimed the world record with a robot that resolved the cubic in 0.305 seconds. This record stood for a year before the team of Elmore Family School of Electrical and Computer Engineering – JuniPa Otta, Eden Hard, Matthew Petrohay, and Alex Burta. Their robot is known as Pradobic Cube. The robot record needs to be removed from Lego for less than half a second and instead, using better components like industrial motors. It only reduces it for 0.103 seconds, however, the team needs to find a number of new ways to shave the team from the mill.
“Every robot that has done by the previous world record has been focused on something new,” said Petroha. Stuffy When MIT grade students broke the record in 2018, they chose industrial hardware, which performed better than what the previous record holders used. Dostbishi Electric selected electric motors that were better suitable for specific work to rotate on each side of the cubic instead of hardware that move forward.
However, the first thing was made by the students of Perio, it was actually the speed that his robot could imagine the schemeable cube. Human speed cubing rivals are allowed to study Rubak’s cube even before their timer begins, but the robot record also includes the time that seems to determine the location of all the colors. Students used a pair of high -speed machine vision cameras from FLIR, which has only 720×540 pixels resolution, which was indicated by the corner of the cubic corner. Each camera can see three sides simultaneously during the exposure, which is much lower than 10 micro -seconds.
The high -speed flair cameras of the cubbak’s cubes use a wide -angle lens, and the Rubic Cube appears in only a very small region of their landscape. The color detection system relies on low resolution images of the puzzle, which accelerates processing times. Photo: Matthew Petroh / Prado University
Although it may be immediately known, it takes time for the camera to process the data coming from the sensor and convert it into a digital image. A customs image detection system has been used in the cubbak cubes that completely leave the image processing. It also focuses on only a very small area that looks at each camera sensor – a crop area that is only 128×124 pixels size – to reduce the amount of data.
The raw data of the sensors is sent straight to the high-speed colors detection system, which uses the RGB measure from the small sampling areas on each square so that their color can be faster than the second point of view-even the AI.
Petroha confessed, “It is sometimes less reliable, but even if it is 90 % permanent, it is so good that as long as it is fast. We really want this pace.”
Despite a lot of hardware on Prado’s robot, the team chose to go with the existing software when the thing is when the fastest way to solve a scumbulated cube was found. He used Elias Fernter’s Rob Toofas, which is a cubic algorithm that takes into account the unique abilities of the robot, such as being able to rotate two sides of the cube simultaneously.
The team also took advantage of the Rubc Cube solving technique, called Corner Cutting, where you can begin to turn a cubic side before you stand and turn it another. The advantage of this technique is that you are not waiting to be completely eliminated before eliminating the rotation of someone else. For a short moment, there is an overlap between the movements of the two sides, which can save a lot of time when you chase the world record.
Fast footage of the product of the product shows how it uses the corner cutting techniques to override movements and reduce the time to solve the cubic of the rubric. Photo: Matthew Petroh / Prado University
The challenge with corner cutting is that if you use too much power (such as a robot is worth) and if things do not take time at all, you can break physically or even completely eliminate a rubric cube. In addition to completing the robot’s movement time and the speeding of its motors, students had to customize Cubes themselves.
The Guinness World Records World Cube Association is following the guidelines, which contains a long list of rules and regulations that need to be followed before it is followed. This allows rivals to edit their cube, as long as it twisted like a standard Rubic cube and has a nine -color square on each of its six sides, which has a different color on each side. Other materials other than plastic can be used, but color parts need the same structure.
To improve its stability, the Prado team upgraded its cube’s internal structure with a custom 3D printed version, made from strong SLS nylon plastic. The WCA also allows the use of lubricating substances to help cubes rotate more independently, but here it is used for a different reason.
“The cube we use for the cubic record is amazingly tight, as is almost tightly tight,” says Petroha. “It is very difficult to turn what we have changed. Not impossible, but you can’t change it with your fingers. You really have to enter your wrist.” When you solve the cube at a speedy speed, the lubricant helps to smooth its movements while increasing stress reduces ultrams and improves control, so time -saving tricks can be used like corner cutting.
Each of the six robots’s six Sarvo Motors is connected to the Robak’s Cube Center Square, which revolves around everywhere. Photo: Matthew Petroh / Prado University
High -speed servo motors help reduce the hours of solving, but it is not as easy as they speed up and expect the best. In the product cubic, six motors attached to the metal shaft were used, slot in the center of each side of the cube. After examining several different methods, the team settled on a trapezel motion profile where the servoos is speeding up to 12,000,000 degrees/S2, but close to 3,000,000 degrees/S2, very slow, so the robot can be more accurately positioned because it comes to stop.
Can the cube of Prakbak break the record again? Petroh believes it is possible, but it will need a strong cube made of something other than plastic. “If you make a fully application -related Robic cube with some kind of carbon fiber composite, I can imagine that you are able to survive fast, and just to be able to survive at a fast speed will allow you to bring down time.”
