[python] Re: Python, of course.


On 09/01/2005 07:02 PM, mtb@xxxxxxx wrote:

>At 12:35 AM 8/20/2005, you wrote:
>
>  
>
>>The calculations made by Ray and Dirk are a big progress towards the
>>evaluation of stabilty factors in the python frame geometry. But the
>>ultimate solution is still not found (and I guess it never will be ;-)
>>    
>>
>
>I think that the "solution" would require modeling the reflexive response and 
>natural damping action of human bodies; the python itself cannot be made 
>self-stable. However, as everyone here seems to agree, it can be made easier 
>to control (minimizing necessary input).
>As others pointed out, making a unicycle taller makes it "more stable" and 
>easier, but it can never be truly stable.
>  
>
A little late responce to this: I totally agree with this point of view.
The human must be calculated in. If there is to be a real progress of
the evaluation of the stability of the python, then one needs to know
what is easy for a human to control and what is not. But this depends on
the amount of learning this particular person does. 

In my view a bike and a rider combination is acceptable when the
corrections needed on the part of the rider to keep the bike up does not
need much of concentration effort.

dirk

>In 100 years of effort, no one has ever published a complete physical 
>description of the motion of hinged two-wheeled vehicles. There is a 
>commercial package I saw that can dynamically model almost all of the 
>important aspects of motorcycles. It is done with a package like ODE 
>http://ode.org/ 
>http://ode.org/slides/igc02/s19.html
>
>Ray
>
>
>
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