Re: Linear Induction Motors

[jrt@xxxxxxxxxxxxxxxxxxx]

--- In femm@xxxx, dcm3c@xxxx wrote:
> In a message dated 4/4/01 11:52:45 AM Eastern Daylight Time, 
> adrianw@xxxx writes:
> 
> 
> > Hi,
> > I am after controlling the speed the plunger moves at across 
the whole 
> > of its travel. Most solenoids accelerate until they hit a 
mechanical stop, 
> > I need a bit more control than this.
> > 
> > Adrian
> > 
> 
> Not knowing much about your application, it's hard to say anything 
> definitive. However, it sort of sounds like a job for a voice coil 
actuator 
> with some feedback. Check out: <A 
HREF="http://www.beikimco.com/";>http://www.beikimco.com/</A>
> 
> Dave
> --
> David Meeker
> http://members.aol.com/dcm3c

I believe voice coils are relatively short travel - you may do better 
with a proportional solenoid (travel varies with current) - just 
search the web with key words 'Proportional Solenoids' and you should 
find plenty.

Cheers

John R Taylor