Microprocessor and transputer implementation of AC motor vectorial control

Two different solutions for vector phase control for AC motors have been implemented, tested, and compared. One of these uses a 16 b microprocessor (80286), with a coprocessor, working at a 33 MHz clock rate. The number of floating point operations to be performed in the computation of the equations involved in vector phase control required the use of a coprocessor in order to unload the task of the CPU and to speed up the process. The second implementation uses two transputers (INMOS T800) working at a 25 MHz clock rate and a serial transmission rate of 20 Mb/s. Due to the processing speed of both implementations, the digital control blocks match the speed conditions imposed by the fast response of the internal current control loops of the physical system. The implementation based on transputers can execute the control algorithm in only 500 ms.<>