Go to Post Finding those students and giving them a lift up out of the sea of apathy that is constantly trying to drown them is one of the reasons I am in my profession. - Ben Mitchell [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 Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Spotlight this post!  
Unread 15-01-2008, 21:20
seanwitte seanwitte is offline
Registered User
None #0116
Team Role: Engineer
 
Join Date: Nov 2002
Location: Herndon, VA
Posts: 378
seanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant futureseanwitte has a brilliant future
Send a message via AIM to seanwitte
Ever use a helicopter heading hold gyro before?

RC helicopters use gyros to control the tail rotor. They sit between the receiver and the servo/esc for the tail and modify the control signal sent to the output. The input is the desired PWM value and the output is the modified PWM value. The gyro will attempt to hold the heli tail in a fixed position when the input is neutral, but will allow the tail to move when a non-neutral input is applied.

We used the ADXRSxxx gyros on the robot to integrate the heading, but I never thought of using one of these simple gyros to make the robot drive straight. For a holonomic platform you have three components to your drive commands: X, Y, and rotation (W). Take the W value and send to to one of the user-controlled PWM outputs connected to the gyro input. Connect the gyro output back to the RC and read the pulse width to determine the modified signal value. Use the modified value to drive the robot instead of the original W value. I have no idea whether it would work or how well, but I was curious whether anyone has done it.
 


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
Gyro Heading always zero, yet operating? marccenter Programming 3 16-01-2008 10:54
Reading gyro before Autonomous mode Doug Leppard Programming 9 06-01-2008 21:02
Has this ever happened before? BBnum3 General Forum 22 17-04-2007 11:39
Keeping a certain heading using a gyro DanDon Programming 12 08-03-2006 14:27
Ever seen this serial port problem before??? Aidan F. Browne Programming 5 05-02-2003 12:03


All times are GMT -5. The time now is 03:08.

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