Go to Post How do You Chiefdelphi? :cool: - SpaceOsc [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 Rating: Thread Rating: 28 votes, 5.00 average. Display Modes
Prev Previous Post   Next Post Next
  #9   Spotlight this post!  
Unread 27-10-2014, 16:34
Richard Wallace's Avatar
Richard Wallace Richard Wallace is offline
I live for the details.
FRC #3620 (Average Joes)
Team Role: Engineer
 
Join Date: Jan 2003
Rookie Year: 1996
Location: Southwestern Michigan
Posts: 3,646
Richard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond reputeRichard Wallace has a reputation beyond repute
Re: Jaguars and FAST PID Looptimes

Quote:
Originally Posted by JDNovak View Post
... The issue with all this is available energy and where it gets absorbed.
... Bottom line is you can choose to steer fast or accelerate fast but not both at the same time.
... I'm looking into improving steering efficiency and reducing motor size but until then power management is the only option. This never seemed to be a problem before the larger steering motors arrived.
Dr. Joe and John, too? Wow, there is a lot of horsepower in this thread!

How much acceleration is needed for swerve steering? Is Dr. Joe correct about 90 deg in 60 ms? What trajectory, maybe some kind of spline to reduce or eliminate jerks?

How important is swerve module moment of inertia about the steering axis? How important is scrub? Will overhung motor mass and fat treads be significant factors?

(Is Ether reading this?)

John, what do you think are the window motor attributes that kept this from being a problem in the past? Can a motor engineer help with this?
__________________
Richard Wallace

Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
 


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 14:55.

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