From Kenny Balys Sent Thu, Aug 18th 2005, 20:45
From Kenny Balys Sent Thu, Aug 18th 2005, 20:45
I worked with an analogue computer project a few years ago. It was part of a controller for a aerial gravimeter (similarities with an inertial navigation system). The basic operation of the instrument involved keeping a gravity sensor always aimed towards the ground no matter what the airplane it was mounted in was doing. The airplane could be banking, climbing, diving, bumping about; the sensor always had to be oriented towards the center of the earth (no insult to flat earthers intended). In order for this to happen we used 3 accelerometers (oriented X, Y, Z) and two gyroscopes (two axes). These would detect the motion of the aircraft and a computer would move the gravity sensor to counter this motion of the airplane. Here is where the analogue comes in..... If you did this digitally, you would have to digitize the 3 accelerometers and the 2 gyros, calculate a 3 axis rotation and then output control voltages to the gravimeter platform to move it contrary to the aircraft. Gross! We used a relatively simple analogue computer that would spontaneously output 3 axis rotation control voltages from the continuous analogue input of the gravimeters and gyros. It was totally smooth and linear and so much more elegant and simple than any digital solution. Wanting a signal that is the opposite of an input signal, the slope of a curve or the area under it is a natural application for analogue computation. Just writing this makes me suddenly want to get the inverter card from Doepfer for my A100. Cheers. ./k On 18-Aug-05, at 3:46 PM, royce wrote: > hi folks, > how does one use an integrator as found in analog > computers to modify control voltage or audio signals > in modular analog synthesis? What are common, or > interesting, or uncommon applications? > royce > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > ======================================================= Lead Berry Research Inc. Fax: ++ 416 352 5229 http://www.LeadBerryResearch.com This e-mail (and any attachments) is confidential. If you have received it in error, please delete it from your system. Report abuse to: xxxxx@xxxxxxxxxxxxxxxxx.xxx =======================================================