SU362317A1 - - Google Patents

Description

The invention relates to computing and, in particular, to electronic modeling devices. It can be used in various automatic systems as, for example, a universal functional converter. A device for simulating the function Z is known. A disadvantage of the known device is the limitation of its functionality, which is expressed in the inability to model functions of the form k V 7 (ni., NC). The purpose of the present invention is to eliminate this drawback. In accordance with the essence of the Invention, this goal is achieved by the fact that the device is equipped with a ring scaling circuit with k outputs, the input of which is connected to the output of the pulse generator, and an electronic switch whose inputs are connected to voltage sources Z ,, outputs to the input of an exponential voltage converter Z and the control inputs are to the corresponding outputs of the ring scaling circuit, the exponential voltage converter K is made with a controlled time constant, and its control the inputs are connected to the corresponding outputs of the ring scaling circuit. The drawing shows a block diagram (of the proposed simulator. The device contains a pulse generator /, an annular scaling circuit 2 with ft outputs, exponential converters 3 and 4, an electronic switch 5, a comparison circuit 6, an electronic key 7 and a smoothing filter 8. Each of the exponential converters 3 and 4 are made, for example, in the form of a serial C-chain with a transistor connected in parallel to the capacitor, the base of which serves as the starting input of the converter. The charge resistor clips R are The input terminals of the converters. In the exponential converter 3 to control the change in its constant time, the charge resistance R is made in the form of parallel-connected chains, each consisting of a series connection of a resistor /, with a transistor switch. The bases of these keys are control inputs They are an exponential converter 5. The electronic switch 5 consists of k transistor switches, the bases of which are the control inputs of the switch. The outputs of these keys are connected to one of the input terminals of the exponential converter 4. The switches of the switch keys together with the second input terminal of the converter 4 are connected to the corresponding voltage sources Z ;. The output of the pulse generator / is connected to the input of the ring conversion circuit 2 and with the triggering input of the external transformers 3 and 4. The outputs of the conversion circuit 2 are connected to the corresponding control inputs of the exponential converter 3 and the electronic switch 5. The input of the converter 3 is connected to the voltage source U and the output is from one of the inputs of the comparison circuit 6, the second input of which is connected to the voltage source X. The output of the comparison circuit 6 is connected to the control input of the electronic switch 7 connecting the input Xponential transducer 4 with the input of a smoothing filter 8. The device operates as follows. The first pulse at the output of the generator / acts on the input of the ring scaling circuit 2 and on the trigger inputs of exponential converters 3 and 4. At the same time, the first output of the scaling circuit 2 is for a time equal to one generator period T / (until the next, second pulse arrives), a voltage is established that acts on the first control inputs of the exponential converter 5 and the electronic switch 5. Due to this, the resistance R is introduced into the charge circuit of the converter 3 and the input 4 of the converter 4 connects iK to voltage source Zi. The second generator pulse also triggers both converters and switches the ring scaling circuit to the second position, so that during the second non-conversion period, resistance R-2 is introduced to the charge circuit of the capacitor of the converter 5, and the input of the converter 4 is connected to the source Zg and etc. Every k cycles of oscillator 1, the operating conditions of converters 5 and 4 are repeated. After the impact inputs of the exponential converters 3 and 4 and the input of the ring recalculation circuit of the 2th pulse from the generator output / during the ith conversion period, the voltages on the outputs of exponential converters 3 and 4 change according to the laws: and Zjg where Tg is the time constant of converter 5; t is the time constant of converter 4. Output voltage of exponential converter 3 is compared by comparison circuit 6 with voltage X. Starting from time o, - at which compared voltages become equal, i.e. A -ro period at the output of the comparison circuit 6 a signal appears that unlocks key 7 at the time of its existence and thus passes part of the output of the Inversion 4 of the converter 4 to the input of the smoothing filter 8. Given the complete repeatability of the i-ro process after k conversion periods p voltage at the output of smoothing filter pro. X YI, “is proportional to a function of type / - I. The ability of the device allows it to be used as an upivesal functional converter for modeling with any given accuracy of any functions decomposed in the Maclaurin power series with the accuracy that is provided by taking into account the k first members of this series. Subject of the invention. A device for modeling the function 6 / X f ,. i – I containing the exponential voltage transformers Y and Z, a pulse generator connected to the start-up inputs of both exponential converters, a comparison circuit, one of the inputs of which is connected to the output of the exponential 1P1 Y converter, and the second to the voltage source X and the output to the control; to it the input of the electronic key connected between the output of the exponential converter Z and the input of the smoothing filter, characterized in that, in order to expand the frequency range of the device, it contains a ring scaling circuit with k outputs, the input of which is connected to the output of the pulse generator, and the outputs - with control inputs of the exponential converter U, an electronic switch and voltage sources Zi connected to the inputs of the electronic switch, the outputs of which are connected to the exponential converter voltage Z, and the control inputs with the corresponding outputs of the ring scaler.

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