RE: [Embedlets-dev] CNC machine controller -> JSIMM, TStik, Muvium

[James C. <ca...@vi...>]

Well I think curves are a bit tricker than just a beginning and end
because you need rate of change and that's a bit hard to send for each
line segment that makes up the resolution of the system. 

The real-time aspects may be important for example to understand how
fast the cutter is able to move in different directions and
accelerations given what it is cutting and its current speed and so
forth. Sending this as discrete commands may not be possible or very
slow to do so. So time and hence the real-time control is probably
important to the muvium JAPL servo controller implementation but you are
correct that it is not important to the container hence, as Ted has said
all along we are using muvium to solve these types of real-time problems
so the container doest have to worry about them. All the container needs
to do is to issue these commands, and It's done. The command set should
not have real-time dependencies, ie they should be atomic with respect
to time then it is just a matter of the container sequencing the
commands to the JAPL/muvium controller one after the other.

James Caska
www.muvium.com
uVM - 'Java Bred for Embedded'



-----Original Message-----
From: emb...@li...
[mailto:emb...@li...] On Behalf Of
Gregg G. Wonderly
Sent: Wednesday, 25 June 2003 5:14 PM
To: emb...@li...
Subject: Re: [Embedlets-dev] CNC machine controller -> JSIMM, TStik,
Muvium 


Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
_______________________________________________


>Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
>_______________________________________________
>
>Well seems we are on the same wavelength with this one.
>
>>As soon as the fundamental design gets firmed up a bit, I will ask the
>experts
>>in the newcim group what command-set makes the most sense.
>
>Well then you have a lot of work left to do... The task of getting from

>a diagram of something to 'make' to a set of servo commands is not 
>exactly trivial. I wonder if there is some standard for this. Is this a

>conversation for the CNC group?

Clearly the simplifying design will be one which allows the embedlet
container 
send commands to the uVM devices which give them exact beginning and end
of 
movement commands.  Then, the realtime requirements of the container
will be 
non-existent, and the container could run on J2SE for instance...

-----
gr...@cy...  (Cyte Technologies Inc)




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