Seuraa 
Viestejä45973
Liittynyt3.9.2015

Moi siellä!

Kertoisiko joku tietämättömälle, mikä tämän synkronisaatio ilmiön aiheuttaa. Kiitos

http://www.youtube.com/watch?v=JWToUATLGzs&noredirect=1

Kommentit (5)

Selitys ei pitäisi olla alla liikkuva pöytä, sillä sen pitäisi aiheuttaa liike vastakkaisiin vaiheisiin. Ilmiö tunnetaan nimellä

http://en.wikipedia.org/wiki/Odd_sympathy

'Huygens noticed something strange: No matter how the pendulums started out, eventually they always ended up swinging in exactly opposite directions....
To explain why the pendulums move in opposite directions, the team set up a system of equations that took into account the pertinent properties of the system, including the weights of the various components and friction. The structure of the equations made it clear that friction is the cause of the antisynchronized motion. As Huygens originally postulated, the swinging of the pendulums exerts small forces on the supporting beam. If the pendulums are moving in the same direction, together they nudge the beam the other way, giving rise to frictional forces that naturally put a damper on this kind of motion. If the pendulums are moving in opposite directions, however, the forces they exert on the beam cancel each other, and the beam doesn't move. So over time, antisynchronized motion wins out over synchronized motion. '

http://www.americanscientist.org/issues ... -revisited

Ueberweg
Seuraa 
Viestejä1218
Liittynyt12.9.2008
Einheri
Selitys ei pitäisi olla alla liikkuva pöytä, sillä sen pitäisi aiheuttaa liike vastakkaisiin vaiheisiin. Ilmiö tunnetaan nimellä

http://en.wikipedia.org/wiki/Odd_sympathy

'Huygens noticed something strange: No matter how the pendulums started out, eventually they always ended up swinging in exactly opposite directions....
To explain why the pendulums move in opposite directions, the team set up a system of equations that took into account the pertinent properties of the system, including the weights of the various components and friction. The structure of the equations made it clear that friction is the cause of the antisynchronized motion. As Huygens originally postulated, the swinging of the pendulums exerts small forces on the supporting beam. If the pendulums are moving in the same direction, together they nudge the beam the other way, giving rise to frictional forces that naturally put a damper on this kind of motion. If the pendulums are moving in opposite directions, however, the forces they exert on the beam cancel each other, and the beam doesn't move. So over time, antisynchronized motion wins out over synchronized motion. '

http://www.americanscientist.org/issues ... -revisited


Olisi kannattanut lukea loppuun asti:

Huygens only observed anti-phase synchronization of his pendulum clocks. Bennett and co-workers reported both anti-phase and in-phase synchronization of their clocks as well as "death" states wherein one or both of the clocks stops. Synchronization of driven oscillators is also discussed in books written by I.I. Blekhman, and by Pikovsky and co-workers. A detailed analysis was provided by Fradkov and Andrievsky in 2007 regarding the conditions for in-phase or anti-phase synchronization of a 2-pendulum system
Ueberweg
Olisi kannattanut lukea loppuun asti:

Huygens only observed anti-phase synchronization of his pendulum clocks. Bennett and co-workers reported both anti-phase and in-phase synchronization of their clocks as well as "death" states wherein one or both of the clocks stops. Synchronization of driven oscillators is also discussed in books written by I.I. Blekhman, and by Pikovsky and co-workers. A detailed analysis was provided by Fradkov and Andrievsky in 2007 regarding the conditions for in-phase or anti-phase synchronization of a 2-pendulum system



Olisi kai pitänyt jaksaa kirjoittaa enemmän ja loppuun asti. Mutta kun ei jaksa. Tekniikan kannalta vastavärähtely on yleensä pahasta ja sykroninen hyvä. On erittäin hankala käsittääkseni virittää tuollaista systeemiä synkroniin. Jonkinlaisella tarkalla analyyttisellä laskennalla ja hyvin toteutetulla sovelluksella onnistuu ilman arpomista.

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