Hi Guys,This particular post is for the beginners in robotics as few of my friends asked me to do so.
here we go with the first lesson on DC Motors.
- DC motors are geared motors. These contain a Gear box at the top and the silver coloured part in the picture is the main motor that drives the axle.
- as u can see in the first fig. to the extreme left . there are various gears in it. these are step gears which reduce the high r.p.m to the desired r.p.m
- The main motor gives around 2000 r.p.m whereas the gear box reduces it to the desired r.p.m { 15 r.p.m in this case }
- Now, one thing to keep in mind that the Torque is inversly proportional to the speed.
TORQUE = k/ SPEED
where k is a constant.
- In a laymans language Torque is the power given by the motor to overcome the obstacle.
- If you want high speed then u have to compromise with the Torque and if u want high torque than compromise with the speed.
- Generally for normal robotics competition {level 1} one should go for 300 r.p.m motors as they provide you the combination of torque as well as speed.
chapter 2 will be coming soon......
Posts
