SELCYN-DIGITAL POSITION CONVERTER Russian patent published in 1995 - IPC

FIELD: metal working. SUBSTANCE: selcyn-digital position converter has contactless synchrotransmitter and connected in series with it a converter of three-phase system of voltage of stator windings of the synchrotransmitter to five-phase system of sine voltage, being in the form of five summing amplifiers and three- phase capacitive divider, connected by star, five-channel converter of sine voltages to inverted rectangular pulses, logic circuit for shaping pulses of forward and reverse counting. Such logic gate for each channel includes the flip-flop member with AND-gates in its inverting inputs, circuit for shaping a pulse, setting the flip- flop member, and common for all channels AND-gates for pulses in output circuits of forward and reverse counting, respectively. Outputs of these circuits are connected with inputs of reverse counter, whose output is joined with a device for information output. The above mentioned converter of three-phase system of voltage of stator windings of the synchrotransmitter to five-phase system operates, as a reference voltage signals from outputs of adjacent channel of the sine voltage converter, having in its forward non-inverting output the circuit for shaping pulse, setting the flip-flop member. An output of each circuit for shaping such pulse is joined with first inputs of identical AND-gates of output circuits, for forward and reverse counting. Each second input of these gates is connected with an output of the flip-flop member of another channel. EFFECT: enlarged using range of the converter, enhanced accuracy of it operation. 2 cl, 5 dwg