Go to Post Ask two different FIRSTers for an opinion, get three different answers! - pfreivald [more]
Home
Go Back   Chief Delphi > Technical > Electrical
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rating: Thread Rating: 2 votes, 5.00 average. Display Modes
Prev Previous Post   Next Post Next
  #13   Spotlight this post!  
Unread 06-08-2008, 16:27
ajlapp ajlapp is offline
Registered User
AKA: Anthony Lapp
None #0118 (Team RUSH and Robonauts)
 
Join Date: Sep 2001
Rookie Year: 1996
Location: Ortonville, MI
Posts: 648
ajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond reputeajlapp has a reputation beyond repute
Re: New Speed Controller Announced

Quote:
Once they implement CAN, I hope that they also consider some other control friendly strategies:
using current messurements to allow for velocity (and even position) control without the use of encoders or other sensors. I discuss this here: What Dr Joe Wants for Christmas... (Man, I love referencing myself ;-).
implementing PID control onboard the speed controller (send it your gains and from then on just give it a desired position -- let IT figure out what the PWM outputs should be)
From the tech at the Luminary booth here at NI Week.....

-full current sensing and feedback for position control, when they unlock the feature in '010
-onboard PID, you tell it the constants and it goes to work

The unit has a cool limit switch feature also built in. you can wire a limit switch directly to the esc for both directions of operation as a built-in software stop.

The standard pwm connection still applies for now. the CAN interface is either disabled or now allowed for our use, though the demo unit they were running was linked up via ethernet cable. looked pretty slick.

Woody said we'd be able to use victors this season to carry us through the transition. The most exciting news, is that both the FIRST rep and the NI rep said the price point for the Jaguar was going to be significantly less than the victor....."we'll be happy" were his exact words!
__________________
Anthony Lapp
FIRST Engineering Mentor
Owner/Operator 221 Robotic Systems
221 Robotics Systems - Quality Hardware, Made in the USA
RobotOpen
anthony@221robotics.com
Twitter us: @221RobotSystems
Team 1 --> 94 --> 68 --> 221 --> 857 --> 27 --> 118
Design Engineer/Fabricator and 17 year vet
Team Rush (FRC27) and Robonauts (FRC118)
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
New Vex Microcontroller announced Brandon Martus General Forum 19 07-05-2009 16:00
FRC Robot Controller/Speed Controller RoarRoar Control System 3 17-01-2008 10:41
speed controller max speed Team 668 Programming 15 13-02-2005 14:05
New Special Edition GameBoy Announced Joe Matt Chit-Chat 12 13-01-2003 21:35


All times are GMT -5. The time now is 08:28.

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