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- Newsgroups: comp.robotics
- Path: sparky!uunet!stanford.edu!kronos.arc.nasa.gov!doctor
- From: doctor@kronos.arc.nasa.gov (Terry Fong)
- Subject: Re: Cheap, light orientation sensor needed
- Message-ID: <1992Nov6.171604.29238@kronos.arc.nasa.gov>
- Keywords: orientation, cheap
- Sender: terry@ptolemy.arc.nasa.gov (Terry Fong)
- Nntp-Posting-Host: tardis-arclan.arc.nasa.gov
- Organization: NASA/ARC Information Sciences Division
- References: <1sDsTB1w165w@galsci.uucp> <1992Nov6.165554.16576@PacBell.COM>
- Date: Fri, 6 Nov 1992 17:16:04 GMT
- Lines: 25
-
- In article <1992Nov6.165554.16576@PacBell.COM> tlhouns@ns.pacbell.com (Lee Hounshell) writes:
- >
- >I had an idea for constructing one using "bend" sensors with weights attached
- >to one end. As the robot's orientation would change, the sensors would move
- >(because of gravity pulling the weights). If several of these sensors were
- >placed strategically inside a robot's chassis, I suspect that one could calculate
- >the robot's orientation fairly accurately. Any comments?
-
- Well, this might give you 2 axes of tilt (roll & pitch angles), but
- what about the 3rd axis (yaw/heading)? You'll still need a compass (or
- other referenced sensor)...
-
- By the way, there is a company in the Bay Area that sells
- vibrating piezoelectric gyroscopic chips (primarily used in missiles,
- and other devices) pretty cheaply. I'll post the address as soon as I
- find it... The resolution is pretty poor though, but may be good
- enough for "cheap" applications...
-
- -Terry
-
- --
- _______________________________________________________________________________
- "I may be captain by rank, but I've | Terry Fong <terry@ptolemy.arc.nasa.gov>
- never wanted to be anything but an | NASA-AMES M/S 269-3, Moffett Field, CA
- engineer!" -- M. "Scotty" Scott | (415) 604-6063 office, 604-6081 lab
-