I wonder if different people have different ideas of what motor control
really is. If you have one PWM connected to a drive that is feeding
current to a motor, I'll bet a real-time Linux kernel could work fine.
If, however, you have several PWMs connected directly to FETs that are
feeding current to the motor (no external drive), it will be a real
stretch to use Linux directly. These are two completely different
topologies.
The PIC processors I referred to earlier have multi-output PMW modules
built in that handle dead time and other issues associated with driving
motor bridges. Other manufacturers then Microchip have other solutions,
I'm just more familiar with the PIC line.
Jim
jesseoff wrote:
>
>
> --- In Jim Ham<> wrote:
>
>> Of course, if Techologic offers a motor control core that works out of
>> the box the whole cost equation changes... This is a big IF.
>>
>
> We have several we have implemented for customers, regular brushless DC motor
> control core with quadrature feedback, stepper controllers with
> auto-acceleration/deceleration, and even 3-phase sinusoidal PWM (or
> quasi-sinusoidal) variable frequency drive controllers for AC induction or
> permanent magnet types.
>
> The main thing the prevents creating a general purpose product is always how
> the customer wants the motors connections terminated or which power FETs to
> use or how many to control on one board. Every product is unique.
>
> //Jesse Off
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
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