Older blog entries for jwp9447 (starting at number 4)

26 Aug 2009 (updated 26 Aug 2009 at 12:27 UTC) »

Hey Guys! I frequently browse the database and today I decided I could publish some of my robots. I wanted to publish my current robot 'Terror-1' into the 'Robot of the Day!' For more information about Terror-1, please check my website!

'http://sites.google.com/site/robotictechnology/home/my - robots'

There are articles, and photos about Terror-1!!!!

24 Aug 2009 (updated 27 Sep 2009 at 11:36 UTC) »

Sticky Bot and Biobots

Hey Guys. I heard of Sticky Bot today and I thought I had to share it with robot.net. Sticky Bot is covered with thin polymer, which is the key matter that help StickyBot stick to ceilings, windows or everything! When we take a tape and polymer, and tie it on to Sticky Bot, the tape will be weakened and then it can fall off. However the polymer is much, much, much stronger and can go 1000 times more longer than a tape! Let see some videos! Oh! If you want to learn more about biobots check this URL!- http://www.discovermagazine.com/web/biobots

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Thank You For Visiting My Blog Post!!!!!!!!!!!!!!!!!!!!!!!!!

23 Aug 2009 (updated 24 Aug 2009 at 11:49 UTC) »

Humanoid Robots-How do they Work?

Hey Guy! I'm here to share my robot project called 'The Humanoid'. This is my project to make a humanoid that can walk easily, run, and also climb the stairs like Asimo! Well guess that there are lots of people who what to make a humanoid like me so I whated to share it with robot.net! How do humans walk? To find out, Giovanni Cavagna, a physiologist from the University of Milan, has been studying the concept of human motion for nearly forty years. From his experiments, he has determined that human motion is similar to that of an inverted pendulum. A pendulum is a device that transforms kinetic energy into potential energy, and back in equalizing ratios. Cavagna describes the inverted pendulum motion as,

You pivot around the foot that's on the ground, as if you were using that leg to pole-vault, and your center of mass, somewhere in the belly, describes an arc. As you plant a foot on the ground in front of you, the ground exerts a force back up your leg that slows you down, and you continue slowing as you rise up on that foot to the top of your arc. At that point your kinetic energy is at a minimum--but your potential energy is at a maximum. As you fall forward into the next step, that stored potential energy is converted back into kinetic energy, and you accelerate again. A perfect pendulum has a conversion from kinetic to potential energies of almost 100 percent. However, from his experiments, Cavagna has determined that humans are only about 65 percent of a perfect pendulum. Therefore, calories are burned while walking. The difference of these values corresponds to the idea that for each step that is taken 35 percent of the energy required for the step is taken from food energies. So where does the loss of energy come from? Cavagna determined that what keeps humans from reaching 100% efficiency is the resistance in leg muscles which creates heat. Due to the Theory of Conservation of Energy, the energy required from walking now must share some energy with thermal energy loss rather than the perfect direct ratio between only kinetic and potential energies.

Now lets see how Asimo walks, run, and plays soccer at Japan! </ param>

23 Jul 2009 (updated 30 Aug 2009 at 11:43 UTC) »

Robotic Technology (RT) Project:RT-1 Saturday, July 18, 2009 -Battle Robot

Hi, guys! I made a battle robot capable to knock down other robots. MY project called 'RT Project' was established to make battle robots that are more powerful and have more weapon service to have more devastating strength to threaten other robots. RT-1 has a spinning blade to smash other robots. Not only that, this also has a robotic arm to lift robots and make it upside-down. Another amazing thing is that is this robot has 2 computer mainbords and each does its own job when I click a button in the remote! There are remote control sensor on this robot that captures radio waves emitted by the remote. And the blades spin faster that the force emitted by the DC moter. Because the big gear is engaged with a smaller gear. When we use math, there are 30 spines in the big gear and only 10 spines in the small gear. 30:1=10:x. 10=30x. x=1/3. Finally the reciprocal number of 1/3 is 3. So if the big gear spins 1 time, the smaller gear will spin 3 times. RT-1 weighs 0.98Kg, height is 14.5cm, and length is 27cm. As you can see is robot is very big and heavy. So next week I will be inventing RT-2. This robot will be more lighter, smaller, and powerful enough to knock down other battle robots.


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