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 almost 4 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 almost 3 years ago

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


Viewed
18721 times

More from scolton

Nightkarting

Nightkarting

Added 3 years ago | 00:01:48 | 3193 views

tinyKart: 8/21/11

tinyKart: 8/21/11

Added over 3 years ago | 00:02:01 | 9070 views

Edgerton Center HSV: Arrows and Fruit

Edgerton Center HSV: Arrows and Fruit

Added 5 years ago | 00:01:54 | 17949 views

tinyKart: Testing New Motors and Battery

tinyKart: Testing New Motors and Ba...

Added almost 3 years ago | 00:01:51 | 3958 views

Electric Go-Kart: First Test-Drive

Electric Go-Kart: First Test-Drive

Added over 6 years ago | 00:06:15 | 18731 views

4pcb - Printed Circuit Quadrotor: New Digital IMU

4pcb - Printed Circuit Quadrotor: N...

Added 3 years ago | 00:03:35 | 4649 views