Although some FX1-based devices may use the FX1鈥檚 CPU
to process USB data directly (Port I/O Mode), most applica-
tions use the FX1 simply as a conduit between the USB and
external data-processing logic (e.g., an ASIC or DSP, or the
IDE controller on a hard disk drive).
This paper analyzes the vector control theory of asynchronous motors based on the magnetic orientation of motor rotors, and its mathematical model is made. Then the variable frequency vector speed-adjusting experimental system is built with the DSP TMS320F2812 which works as the core control chip and intelligent power module.
