SU89502A1 - Electronic controller - Google Patents

Description

ELECTRONIC REGULATOR

Applied on March 17, 1950, No. 414368 in Gostekh

The proposed electronic regulator with the executive engine operates from a relay included in the tube bridge circuit. In order to increase the reliability of the relay in the control controller circuit, the proposed controller uses a transformer with two primary windings connected to the relay contact circuit controlling the actuating motor and the secondary winding connected in the diagonal of the bridge in series with the relay coil.

The drawing shows the electrical circuit of the proposed controller.

The sensing element / regulator (bellows) controls the slider 2 of potentiometer 3. The preset mode is adjusted by slider 4 of the potentiometer. The executive motor 5 operates from a three-position polarized relay 6 with a contact group 7, included in the diagonal of the bridge formed by lamps S and 9, and with resistances 10 and 11. Each position of the slider 4 corresponds to only one position of the slider 2, at which the current in the diagonal the bridge is missing. The grid circuit of lamp 8 includes resistances 12 and 13 that shunt the capacitor 14 charged from the voltage source through the contact group 7. The magnitudes of the charge and discharge currents of the capacitor are determined by the resistances 15 and 13. To increase the reliability of the relay contacts 6, a transformer 16 is introduced into the circuit, the primary windings of which are included in the contact circuit of the relay 6, and secondary into the diagonal of the bridge in series with the relay coil 6.

The increase in the reliability of the operation of the contacts of the relay is ensured by the fact that when they are closed (or opened) in the secondary winding of the transformer 16, an emf occurs. this direction, which contributes to the acceleration of the movement-closure (or opening) of the contacts. When the control variable deviates from the nominal value, the polarized relay 6 operates in one direction or another, depending on the sign of the deviation. In this case, the executive engine 5 begins to rotate in the desired direction and move the executive member. At the same time, when the contact group 7 is closed, the capacitor 14 begins to charge, as a result of which an additional, increasing over time, bias directed towards the elimination of the unbalance of the bridge, is applied to the grid of the lamp 8. At the time of balancing the bridge (which comes before the adjustable parameter approaches the nominal value), contacts 7 of relay 6 occupy a middle position. When: atom

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