Hay
Kvogel Thanks for the feedback.. Omron has ways of doing cam curves; however, I will need to modify the characteristics of the curves frequently .. especially in a museum, where kids are designing, and launching the waves, based on the physics of gravity waves, and their environment which effects propagation. You have to do this very fast and efficiently .. because the "ocean" is only 15-20 feet long! Good thing we now have instant high speed video playback.
Check out this sea made by Peter's motion controller:
https://www.youtube.com/embed/oaNPiB_BE3M?rel=0&controls=0&showinfo=
The trace is from a wave probe ..measuring wave height for FFT analysis of the energy distribution
Here's the test rig for the Omron NJ experiment:
https://www.youtube.com/embed/gGzp7HURBJE?rel=0&controls=0&showinfo=0
PIETER: I forgot how to do quotes on this forum (DUH!)
I could use Kvogel's f(z)=1/2[1-cos(pi*z) as I only need a "Cosine Ramp" to make the Tsunami (no problem using your controller)
The Rogue wave is continuous.. but, complicated. It was the basis of a patent for surfing parks by my boss at an ocean lab where i worked in 1971 .. we used cams to feed hydraulic servos the analog signal, where a 100hp moving wall generated a "rogue wave" in deep water (25ft) about 700 feet from the wave generator .. an' that's where you put the shoal and the beach, so you could ride the resulting wave.. just like the real ocean waves..
As for Trump (sorry I mentioned that) I don't blame Trump for anything. I'm just talking about the "Age of Trump" .. which has nothing to do with Trump .. It's just a time in our history where the middle class has declined, education is drastically defunded, and there is a general disregard for the wisdom of science. Again, I apologize... that 300 x 50 x 15 ft wave tank , built in 1969 was re-designated as a warehouse, and filled in, (2010) killed by the great recession.. The huge building now stores avocados.
Oh the Irony .. You are talking about Neal A. Brown, a former Professor at MIT. I worked with him for many years at the wave tank, often assisted him in many of his personal engineering projects. He was also a consultant to DARPA, and the last time we talked, he was designing self cleaning reverse osmotic filters of industrial size, for sea water conversion to fresh water. Haven't talked to him in over a year .. must give him a call.
By the way... a Micro Ocean doesn't need to be as precise as Ohmsett ... it is only an educational tool ... but, a very accurate one.
to be continued ...