From: 4330291@mcimail.com Subject: Re: AutoRev. Date: Wed, 17 Apr 1996 01:11:31 -1000 Organization: InternetMCI Message-ID: <4l2jl3$5da@news.internetmci.com> Hopefully this thread will continue... I've been reading with some interest. Would the thought of Radio Control be applicable to the topic? Or is the idea for auto-control? Anyway, I've some experience with R/C, some with stunt kites, and none with kite building. Personally, I'd approach it with a single tethered line, with the servos operating control surfaces of some sort. I don't believe monster servos operating the lines(ie: from the ground as a person would) is the route to go... I'd be interested in any thoughts about this, or even if it's old hat and proved unfeasable. I'll be away about 10 days or so... Be awhile before I can pick back up on this. We shall see, eh? Stay High! -jrt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: "Jörg J. Buchholz" Subject: Re: AutoRev Date: Wed, 17 Apr 1996 08:34:33 -1000 Organization: Hochschule Bremen Message-ID: <317539B9.1FC7@fbm.hs-bremen.de> Andrew Beattie wrote: > I don't think that you want to look at the line movement in terms of distance. > Think more in terms of *tension* on the line. > > Build a system to monitor tension in a running line: > > /O\ > O / X \ O > -----------/ \---------- > > Where "O" are pulleys and X is a compression load-cell. > > And build a feedback loop, so that the motor pulls in line to increase > the pressure and lets it out to decrease it. You are definitely right. You can indeed utilize the line tension in a fast inner feedback loop of a cascade control system. On the other hand you still need the outer visual feedback loop because it is not the line tension you want to control but the position and the attitude of the kite. -- buchholz@fbm.hs-bremen.de (Jörg J. Buchholz) = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = From: "Jörg J. Buchholz" Subject: Re: AutoRev. Date: Wed, 17 Apr 1996 19:08:02 -1000 Organization: Hochschule Bremen Message-ID: <3175CE32.17CD@fbm.hs-bremen.de> 4330291@mcimail.com wrote: > ... Personally, I'd approach it with a > single tethered line, with the servos operating control surfaces of some > sort. I don't believe monster servos operating the lines(ie: from the ground > as a person would) is the route to go ... I want to be able to let AutoRev fly *any* rev, not just a special version with servos and control surfaces. The machinery has to stay on the ground. -- buchholz@fbm.hs-bremen.de (Jörg J. Buchholz) = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =