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- Path: sparky!uunet!gatech!concert!duke!news.duke.edu!acpub.duke.edu!ska
- From: ska@hercules.acpub.duke.edu
- Newsgroups: comp.robotics
- Subject: Help needed - Optical Encoders
- Message-ID: <8912@news.duke.edu>
- Date: 21 Jan 93 20:25:10 GMT
- Sender: news@news.duke.edu
- Organization: Duke University; Durham, N.C.
- Lines: 23
- Nntp-Posting-Host: teer10.acpub.duke.edu
- Originator: ska@teer10.acpub.duke.edu
-
- Hello all:
-
- Have the following problem that I need "approach pointers" on -
-
- I have an IBM 7540 SCARA type robot which has two servoed joints driven by
- 12V DC servo motors. The motors are Yaskawa Print Motors of type -
-
- Joint 1 = PMES-16-SA13
- Joint 2 = PMES-12-SA21
-
- Each motor has a built-in "AB quadrature output and zero index channel"
- type optical encoder. These encoders output voltages in the range 0.5 to
- 6 V DC via 4 leads - A, B, I, and ground.
-
- Now, how can I use the voltages from the encoders to compute joint positions ?
- Is there a Yaskawa representative that I can call in the US ? Are there any
- standard texts explaining the decoding procedure ?
-
- Please email responses to - ska@raphael.acpub.duke.edu
-
- Thanks in advance.
-
- -santosh
-