[ODE] Servo to reach a target position

[David Whittaker]

> On Fri, 11 Apr 2003, Royce Mitchell III wrote:
>
>> After reading Russ's e-mail, I agree with him almost completely.
>> However, there is an area that PID control would help in ODE that I
>> don't think Russ has a provision for: controlled stopping. Please
>> correct me if I'm wrong, but I don't think there's a way of telling
>> ODE "I want to stop at exactly position X".

This is why we do need something, but a proportional feedback system
should be all that's needed.

> An even better solution would be, IMO, a linear motor.  Analogous to the
> angular motor, a linear motor would allow you to specify the relative
> linear velocities of two bodies, or a body and the static environment.
> Then you could get linear velocities (and, with trivial proportional
> feedback, linear positions) controlled with constraints rather than with
> forces computed in and applied from application code.

How is this different from using a powered slider joint?

> --
>
> Nate Waddoups
> Redmond WA USA
> http://www.natew.com
>
>
> _______________________________________________
> ODE mailing list
> ODE@q12.org
> http://q12.org/mailman/listinfo/ode