NetNews Usenet Archive 1992 #31/NN_1992_31.iso/spool/comp/robotics/2699

Internet Message Format | 1992-12-21 | 1.9 KB

Path: sparky!uunet!pipex!bnr.co.uk!uknet!cam-eng!mww
From: [e-mail] (Mark Wright)
Newsgroups: comp.robotics
Subject: robot arm info required
Message-ID: <[e-mail]>
Date: 21 Dec 92 13:44:37 GMT
Sender: [e-mail] (Mark William Wright)
Distribution: comp.robotics
Organization: Cambridge University Engineering Department, UK
Lines: 34
Nntp-Posting-Host: dsl.eng.cam.ac.uk

Hello,
      I have to quickly aquire a robot for research into eye/hand
coordination, structure from motion and neural net control for several
students. This would have to be towards the cheaper end of the market
or a second hand machine (approx 11k pounds). I would welcome general
advice and experiences of specific models from end users.

NB. I have looked through comp.robotics FAQ and archive.
A rough spec would be:
1. preferably 6 degrees of freedom (5 acceptable if too costly).
2. repeatability approx of 0.1mm.
3. speed approx 1000mm/sec or better.
4. payload approx 2kg or better.
5. ability to program in world and tool coordinates.
6. ability to interface at a lower level for students interested
   in research into control algorithms.
7. ability to incrementally change path in realtime
   according to information from vision and other sensors.

Of particular importance is the last point, I notice that most
of the cheaper robots use rs232c interfaces, I wonder what kind of
cycle times people are getting for this kind of sensor control loop.

Models I have considered are: Scorbot-er VII, Movemaster EX RV-M1 etc.
Has anyone got experience of these or could suggest others?
All information gratefully recieved.
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Mark Wright
Speech, Vision and Robotics Group
Cambridge University Engineering Department
Trumpington Street, Cambridge, England CB2 1PZ
Tel: [phone] Fax:[phone]
EMail: [e-mail]
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