home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky alt.control-theory:15 comp.ai.neural-nets:4743 comp.realtime:1520 comp.theory.dynamic-sys:400 comp.theory.self-org-sys:134
- Newsgroups: alt.control-theory,comp.ai.neural-nets,comp.realtime,comp.theory.dynamic-sys,comp.theory.self-org-sys
- Path: sparky!uunet!cs.utexas.edu!bcm!aio!midland!scallan
- From: scallan@midland.jsc.nasa.gov (brian scallan 283-4118)
- Subject: Re: Use of hysteresis in control problems
- Message-ID: <1993Jan7.202924.14973@aio.jsc.nasa.gov>
- Keywords: artificial neural networks,control, shuttle
- Sender: scallan@midland (brian scallan 283-4118)
- Organization: MDSSC
- References: <1993Jan2.191649.874@noose.ecn.purdue.edu> <1993Jan5.200214.4270@news.acns.nwu.edu> <1993Jan6.173800.401@pasteur.Berkeley.EDU> <1993Jan7.164935.6493@rwwa.COM>
- Distribution: usa
- Date: Thu, 7 Jan 1993 20:29:24 GMT
- Lines: 26
-
-
- The space shuttle RCS (Reaction Control System) for on-orbit operations uses
- hysteresis to eliminate "jet chatter". This is a "nice" non-linear phase plane
- design controller which keeps the vehicle in a limit cycle, the dead-band for
- which varies depending on the mode of operation. If you have access to a large,
- university library then you should be able to find a gugaplex of papers about
- this controller. Perform a keyword search on "shuttle" and "rcs" in the papers
- database and I'm certain you'll find more than you need. If not, get back to me
- and I'll try to dredge my memory for a suitable reference.
-
-
- Luck,
-
- -BJS-
- --
-
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
- Brian J. Scallan, scallan@sweetpea.jsc.nasa.gov
-
- When angry, count four; when very angry, swear.
- Pudd'nhead Wilson - M. Twain
-
- The opinions expressed
- should not be interpreted as those
- of my employer or any other (semi-)rational entity. {-BJS-}
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-