Interface between programmable electronically commutated motor a

Details Interface between programmable electronically commutated motor a Interface between programmable electronically commutated motor a

1995-04-13

1995-12-05

Wysocki, Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

36455101, H02B 700

Patent

active

054732298

ABSTRACT:
A microcontroller with external memory interacts with a host computer or terminal via a fully isolated RS232 serial interface. An eight-bit D/A converter transforms signals generated digitally in the microcontroller. The low level analog signal at the D/A output is further amplified in a power amplifier which supplies a signal to the motor terminals of the motor to be programmed via solid state relays. The solid state relays form an array of switches which are selectively closed by a low level digit signal generated by the microcontroller and processed by digital circuits. Four signals may be modulated with a signal representing the line frequency and are used specifically in an emulation mode. The interface receives multi-function feedback signals (RPM) from the motor such as speed, memory, content, and diagnostic information. Comparators provide an integrity check of the connections (cable) and the input section of the motor (optocouplers). The comparators compare voltages and currents of a selected motor signal against pre-defined threshold levels.

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