Massachusetts Institute of Technology
Sign in | Create Account

Cap Kart Speed Controller Testing

Ramp input testing of the custom speed controller we are developing for the cap kart. (http://web.mit.edu/first/kart)

Speed control is done by rapidly switching voltage on to and off of the motor coils. In this video, you can hear the speed controller switching frequency as it ramps up and down (high-pitched whine). It is most noticeable at about half speed.

Our speed controller is entirely custom, built in-house. Testing here is with very little load, just the inertia of the rear axle. However, since no heating of the power transistors used to switch was seen, we will be stepping up to load testing very soon.

We hope to be able to handle a maximum current of 300A. The total component cost to build our speed controller will be less than $100 and plans will be made available on our web site if (when) it has fully proven itself.

Comments (1)

Can’t wait to get my hand on the plans!

Posted over 3 years by ElvenChild

You need to log in, in order to post comments. If you don’t have an account yet, sign up now!

scolton

scolton

Category: Engineering | Updated over 2 years ago

Created
August 07, 2008 19:27
Category
Tags
License
All Rights Reserved (What is this?)
Additional Files


Viewed
18388 times

More from scolton

Edgerton Center Engineering Design Class 2010: Project Highlights

Edgerton Center Engineering Design ...

Added almost 4 years ago | 00:03:37 | 23873 views

tinyKart: Winter Special

tinyKart: Winter Special

Added over 2 years ago | 00:02:36 | 3364 views

tinyKart: 8/21/11

tinyKart: 8/21/11

Added almost 3 years ago | 00:02:01 | 8871 views

Cap Kart 2.0: 8/7/2010 Test Drive, Conquering the Turn

Cap Kart 2.0: 8/7/2010 Test Drive, ...

Added almost 4 years ago | 00:01:13 | 11729 views

FIRST Robot - Week 2 Progress

FIRST Robot - Week 2 Progress

Added over 6 years ago | 00:00:38 | 11677 views

Schlieren Flame

Schlieren Flame

Added over 5 years ago | 00:01:21 | 16584 views