home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!howland.reston.ans.net!paladin.american.edu!darwin.sura.net!jvnc.net!netnews.upenn.edu!cronkite.ocis.temple.edu!moe.eng.temple.edu!jwiegand
- From: jwiegand@moe.eng.temple.edu (James Wiegand)
- Newsgroups: sci.engr.control
- Subject: Re: Nonlinear optimal control program available ?
- Message-ID: <1992Dec22.220114.19049@cronkite.ocis.temple.edu>
- Date: 22 Dec 92 22:01:14 GMT
- References: <1h08q1INNl15@flop.ENGR.ORST.EDU> <1992Dec20.051246.20247@cronkite.ocis.temple.edu> <Dec.21.13.36.30.1992.21577@gandalf.rutgers.edu>
- Sender: news@cronkite.ocis.temple.edu (NetWork News (readnews))
- Organization: Temple University EE Dept.
- Lines: 36
-
- In article <Dec.21.13.36.30.1992.21577@gandalf.rutgers.edu> rgonzal@gandalf.rutgers.edu (Ralph Gonzalez) writes:
- >jwiegand@moe.eng.temple.edu (James Wiegand) writes:
- >
- >>In article <1h08q1INNl15@flop.ENGR.ORST.EDU> saleh@ece.orst.edu (Hassan Saleh) writes:
- >>>
- >>> Is there any public domain program available for the solution
- >>> of nonlinear optimal control problems ? I tried using colnew
- >>> to solve the resulting two-point boundary value problems but
- >>> I always get "singular elimination matrix" some where.
- >>>
- >>> H. I. SALEH
- >
- >>According to what I've heard, there is no single method for nonlinear
- >>control systems in general.
- >
- >>jim
- >>... willing to be proven wrong.
- >
- >I'm not an expert in this area, but I think the only general-purpose
- >approach for nonlinear control systems is the brute-force approach.
- >That is, you generally can't solve the math analytically (sometimes
- >it's difficult enough just to formulate it). Therefore you should
- >apply an adaptive or learning controller to try to optimize your
- >performance measure empirically, on-line.
- >... If anyone's interested in digging up my dissertation (which
- >I've decided is a bit hard to read!), it was 1989, Univ. of
- >Pennsylvania. It also goes into applying this approach hierarchically.
- >
- >--
- >Ralph Gonzalez, Computer Science, Rutgers Univ., Camden, NJ
- >Phone: (609) 757-6122; Internet: rgonzal@elbereth.rutgers.edu
- >--
-
- See? I _knew_ this would happen!
- jim
- ...who learns something new each day.
-