SU423131A1 - DEVICE FOR THE CONTROL OF ANALOG COMPUTING MACHINES - Google Patents

Description

The invention relates to the field of computing and can be used to control analog computers (AVMs). A device for monitoring analog computers is known, containing four indicator lights, an error light and two relay groups. Moreover, the windings of the third, fourth, sixth and eighth relays of the first group are connected via normally open contacts of the first, second, fifth and seventh relays of the second group, respectively, parallel to the error lamp to the power supply, and the second and third indicator lights are connected in parallel to the windings of the sixth and eighth relays. However, a large number of relays and indicator lights are used in this device. The proposed device is characterized in that a four-stage logic circuit is introduced in it, the input of the first cascade of which is connected to the outputs of two control AVM adders, to the windings of the first and second relays, through series-connected contacts of which the first indicator light is connected in parallel with the error lamp, and to four contact soils third and fourth relays. The output of the first stage is connected to separated windings of the fifth relay and through adjusting resistors with divided windings of the tenth relay of the second stage, the outputs of which are connected to the four contact groups of the sixth relay and to the separated windings of the seventh relay of the third stage and through serially connected weight resistors and contacts of the eighth relay - to the winding of the ninth relay of the fourth stage, through the normally open contacts of which the fourth indicator lamp is connected in parallel with the error lamp. The winding of the eleventh relay is connected to the power source through the normally open contact of the ten relay, through the normally open contact of which an error lamp is connected to the power source. This makes it possible to simplify the device and increase its speed. Diagram of the device shown in the drawing. The device contains one-one relay. error light and indicator lights The device operates as follows. At the outputs of two control AVM adders, in accordance with the method of excess non-temporal, voltage A | and Luo L, U //;, ..;. 0;

Aj i 0, / -. one

where Xi, .... xi are variables of the problem modeled on ABM.

In the event of an error in one of the variables

AI --- tni. & .Xf, Dz t., / L2. AI - mi. Yes The last equality determines in the plane of the mismatches a beam of straight lines passing through the origin of coordinates, and each single error corresponds to its own right. To diagnose the error, i.e., to determine the number of the distorted variable, it is necessary to determine which of the direct points lies (Ai, Yes), where the voltage D and Yes are obtained as a result of the experiment.

Suppose that the coefficients of P1. chosen so that the straight lines are located at equal angles to one another, equal to

- or, in other words, are bisectrixes 16

16 equal sectors into which the plane AB Yes is divided. Let us write the number of each sector in the form of a binary number, az, Сз, а4, the bits of which are determined in the following way; Ci is found by comparing the signs of the stresses AI and Yes (same-O, different-1), az is found, comparing their modules, “we find.

(2fla)

comparing | D1 | and D2 | tg

04 we find. comparing I A I and lAaltg--, where i equals one of 35 of the numbers 1, 3, 5, 7 (in all cases xa, if the first of the compared values is less than the second). In total, to determine the number of a distorted variable, 4 operations 40 comparisons are required, which can be performed using a four-stage logic circuit. The inputs of the device are supplied with the voltages AI and Aa from the outputs of the two control ABM adders. Relays PI and Pa determine the 45 digits ui, relays P3, Pd, Pb-digits az, Re-relay, PT-digits from, and Re-relays, Pd-digits 04. The number is displayed using LEDs L1-L, bulb L indicates a failure. The RS and RP relays serve 50 for supplying the power supply circuit when there is an error signal that violates the inequality | AI | + | Aa 1 Y 2 Adosh, which is necessary to prevent the device from operating against permissible errors of 55 steps. The sensitivity adjustment is made by adjustable resistors K. We describe the operation of the circuit for a particular combination of AI, Aa values, for example, for 60 Ai 2, l; . In this case, the measles of the polarized PI and Pa relays remain on the right (normally closed) contacts corresponding to the absence of voltage on the windings of these relays or a positive voltage. Lam- 65

kidney L) does not catch fire, which corresponds to 01 0, relay I ,; remains de-energized. Voltages A and A2 cause a current in the coil of the ryu relay to be sufficient to operate. Through the normally open 1P1 relay, the Rc relay power circuit closes, and power is supplied to the bottom of the relay circuit. As a result, a light bulb L turns on, indicating a fault. With

assistance counter-connected windings of the relay Pb is a comparison of the values of Aj and Aa. Since in this case, the relays Pg and Yae do not work, and the light bulb L2 does not go live, i.e. a2 0. Next, the voltages AI and Aa come through the normally closed contacts of the IPs and 7Pb to the opposite windings of the relay

PT, where AI and AS tg- will be compared.

eight

Since the first of the values is smaller than the second, the relay operates and with its normally open contacts P closes the thread circuit of the PR relay and the L light bulb. The latter lights up, which corresponds to. On relay RD, AI and Aa values are compared.

tg - 1.5A2. Since 2.1 1.5, the relay is not a slave16

The L. light does not light up, i.e. Thus, the sector number in which the point is (Ai, A2) (2.1; 1) is 0010. If the numbers of the variables Xi ... Xi6 are pre-aligned with the sector numbers, this means that the second variable is distorted (the number 2 is recorded in a binary system (0010). Subject of the invention. A device for monitoring analog computers, comprising four indicator lights, a fault light bulb and two relay groups, the windings of the third, fourth, sixth and eighth relays of the first group are connected via normally open contacts of the first, second, fifth and seventh relays of the second group, respectively. parallel to the power supply error lamp, and the second and third indicator lights are connected in parallel to the windings of the sixth and eighth relays, characterized in that, in order to increase the speed Operation and simplification of the device, a four-stage logic circuit is introduced in it, the input of the first cascade of which is connected to the outputs of two control adders of an analog computer, to the windings of the first and second relays, through serially connected contacts of which the first indicator light is connected in parallel with the error lamp and to four contact groups the third and fourth relays, the output of the first stage is connected to the separated windings of the fifth relay and through adjusting resistors with separated windings the tenth relay of the second cascade, the outputs of which are connected to the four contact groups of the sixth relay and to the split cables of the seventh relay of the third cascade and through serially connected weight resistors and contacts of the eighth relay to the winding of the ninth relay of the fourth cascade, through the normally open contact of the fourth indicator light plug-in parallel to the error bar, and through the normally open contact of the tenth relay the winding of the eleventh relay is connected to the power source, through the normally open contact The contact of which is connected to the power supply is an error lamp.