Go to Post Ah, free slave labor. One of the many benefits of being a mentor - Ari423 [more]
Home
Go Back   Chief Delphi > Technical > Motors
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #16   Spotlight this post!  
Unread 06-02-2014, 11:42
BBray_T1296's Avatar
BBray_T1296 BBray_T1296 is offline
I am Dave! Yognaut
AKA: Brian Bray
FRC #1296 (Full Metal Jackets)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2010
Location: Rockwall, TX
Posts: 947
BBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond reputeBBray_T1296 has a reputation beyond repute
Re: AC motor?

Quote:
Originally Posted by pmahoney14 View Post
Would it be simpler to use a DC motor and convert AC to DC? I really need a motor to plug into a standard household outlet.
You could use a computer power supply to generate the 12VDC at decent enough wattage's for your application. 15lbs from a lead screw is not demanding very much.
__________________
If molecular reactions are deterministic, are all universes identical?

RIP David Shafer: you will be missed


  #17   Spotlight this post!  
Unread 06-02-2014, 12:33
rfolea's Avatar
rfolea rfolea is offline
Registered User
AKA: Rick Folea
no team (Forsyth Alliance)
Team Role: Mentor
 
Join Date: May 2005
Rookie Year: 2005
Location: US
Posts: 212
rfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant futurerfolea has a brilliant future
Re: AC motor?

You can use a Variable Frequency Drive and a 3 phase motor - that will do exactly what you want, including braking.

Of course, it will set you back $200 ...

Examples:

VFD

Motor
  #18   Spotlight this post!  
Unread 06-02-2014, 12:33
Toa Circuit's Avatar
Toa Circuit Toa Circuit is offline
Thaddeus Maximus
AKA: Thad Hughes
FRC #4213 (MetalCow Robotics)
Team Role: Leadership
 
Join Date: Nov 2012
Rookie Year: 2012
Location: Shirley, IL
Posts: 131
Toa Circuit is an unknown quantity at this point
Re: AC motor?

Depending on what you have available, you _could_ use a three-phase AC motor with a starter.
I'm not sure of the cost, but I'm sure there is a threshold at which the extra cost of that would outweigh the cost of the needed DC converter (Reason #1 why we don't have DC motors on our farm, only AC)... and that for 15 pounds, you are much under that threshold.

I've hiijacked a UPS as a highish-amp testing DC power supply right now. You could do something simalar: just wire into the battery of it to power a CIM, so you have a high amount of juice in reserve but it is constantly recharging- this would work if you don't need continuous use. You wouldn't need to use a UPS; a simple battery charger should work.

For control of DC you should be able to do something as simple as the pseudo H-bridge in a Spike Relay... And with two or one switch instead of relays and signals.
__________________

2012 Head of Programming and Electrical
2013-14 Overall Team Captain and Programming Head
2012-14 Mentor of FLL Team Power Surge
2014 Dean's List Finalist
2014 CIR Xerox Creativity Award
Webpage
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 15:18.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi