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Get in Gear

Robotics Period 5 CMS Aaron Burnup Tyler Gayton

Aaron Burnup

on 25 February 2013

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Transcript of Get in Gear

Get in Gear Period 5 Aaron Burnup and Tyler Gayton present: Motor Power Levels Getting in Gear Gears A gear is a rotating machine part that functions using teeth or cogs. Two gears running together provide a force or movement and a technological advantage. Gears are classified as simple machines. Sometimes, you may want your robot to move faster. With our quick and easy tutorial, you too can be a master of speed and distance! One way to change the speed of your robot is through motor power levels. Increasing the motor power level will increase the speed the motor runs. Driven and Driving Motor Power Levels To change the motor power level, Driving Gear: The Gear in which
the motor is directly linked to, and which
from there directly affects the Driven Gear. Driven Gear: The Gear by which
is directly affected by the Driving Gear slide the notch in the power section or type in a higher or lower number. To increase the MPL, slide it up or put a higher number. Gear Ratio All About Introduction to Gears All About How to Adjust To calculate the Gear Ratio of the NXT, place the number of teeth on the Driven Gear over the number of teeth of the Driving gear as a fraction. Convert to Gear Ratio (replace with colons). Both fractions and ratio's can be expressed as a quotient of the two numbers. Gears of equal size will spin perfectly relative to eath other. A smaller Driven Gear and a larger Driving Gear will increase speed of your robot because a small gear linked to the wheel takes fewer time to make a 360 degree rotation than a larger gear. A larger Gear Ratio thereby increases physical power, climbing hills much better. Real World Examples The bicycle is a perfect example of how Gears revolve around eachother. Pedaling faster and changing the gears on the handle of a bike influences its capability to better match different surfaces. Sound familiar? Assignment Compare a 1/1 gear ratio speed to a smaller gear ratio for example, 1/500000 (Do not try that ratio) in CM's Per Second. You will need an NXT, a set of gears matching the above description, a ruler, and a timer. Question 1:

What are the two main steps for increasing a robots speed?

Question 2:

What is a Gear Ratio that is faster faster than a 1/1 Gear Ratio? Test Time For A Test Question 3: Fill In The Blank

A __________ Gear Ratio increases a robots speed.

Question 4: Fill In The Blank

A Gear is classified as a __________ ____________. Test Question 5

What item in our world shows how Gears interact with eachother to better match surfaces.
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