A prototype implementation of the SCWFUM drive system
is built and tested. In the experimental setup, an emulator
board (Intel SBE-96), in conjunction with a PC acting as a
host computer, are used. The SBE-96 board emulates the actual
microcontroller (8096) function. All A/D and D/A conversions
are performed on board by means of the high-speed
input and output units of the 8096. The control algorithms are
implemented by 16-bit integer arithmetic. The SBE-96 board
runs at a 12-MHz clock rate and incorporates a powerful instruction
set, which allows a sampling time of less than 0.5 ms
to be realized. The speed and position signals are sensed by
means of a resolver-based unit operating at a 5-kHz resolver
reference voltage. The sensed signals are sent to the microcontroller
through a resolver to the digital converter. Current
control is performed by a hysteresis-type current controller.