Go to Post There are a lot of great teams that impress me, but four that really stand out... Our team doesn't want to beat these teams, we want to be these teams. - Mark Holschuh [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #3   Spotlight this post!  
Unread 18-07-2012, 16:00
KrazyCarl92's Avatar
KrazyCarl92 KrazyCarl92 is offline
Registered User
AKA: Carl Springli
FRC #0020 (The Rocketeers)(EWCP)
Team Role: Mentor
 
Join Date: Jan 2010
Rookie Year: 2010
Location: Clifton Park, NY
Posts: 522
KrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond repute
Re: Inertia issues

Quote:
Originally Posted by Levansic View Post
What do you mean by reflected inertia?

-- Len
http://www.diequa.com/download/articles/inertia.pdf

I didn't know what it was either, but I learned a lot about it there. I still don't know enough to answer your question, but maybe someone else here can. I've never done one of these calculations with one of our robots before, but after reading this I may start for chain/cable driven mechanisms that require precise motor control. So I guess it wasn't the programmers' fault all along?

Layman's terms/"TL;DR": the amount of inertia the motor shaft sees transmitted from the load. Modeled ideally by Load Moment of Inertia/[Mechanical Advantage]^2. Useful when precise motor control (i.e. speed or position control) is necessary and the motor is not rigidly coupled to its load. A large difference between the reflected inertia and the motor shaft inertia can explain why some arms or other mechanisms always seem to oscillate rather than behave as controlled. Not exactly Layman's terms, but I think most people on ChiefDelphi would understand most of that.
__________________
[2017-present] FRC 0020 - The Rocketeers
[2016] FRC 5811 - BONDS Robotics
[2010-2015] FRC 0020 - The Rocketeers

Last edited by KrazyCarl92 : 18-07-2012 at 16:11. Reason: Added summary of Reflected Inertia
 


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 06:55.

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