SU1003106A1

SU1003106A1 - Harmonic voltage generator

Info

Publication number: SU1003106A1
Application number: SU813369771A
Authority: SU
Inventors: Юрий Константинович Рыбин
Priority date: 1981-12-25
Filing date: 1981-12-25
Publication date: 1983-03-07

Description

Изобретение относитс к аналоговой вычислительной технике и может быть использовано дл получени синусоидальных напр жений с малыми нелиней-ными искажени ми.The invention relates to analog computing and can be used to produce sinusoidal voltages with small non-linear distortions.

Известен генератор гармонического напр жени , содержащий колебательное ввено, квадраторы, реле, с помощью контактов которого производитс коррекци амплитуды колебаний 1. A known harmonic voltage generator containing an oscillatory input, quadrants, a relay, by means of whose contacts the amplitude of oscillations 1 is corrected.

Однако ему присущи искажени выходного сигнала, обусловленные периодическим переключением положительной и отрицательной обратной св зи.However, it has inherent distortion of the output signal due to periodic switching of positive and negative feedback.

Наиболее близким по технической сущности к предлагаемому вл етс генератор гармонического напр жени , содержащий колебательное звено с релейным корректирующим элементом 2.The closest in technical essence to the present invention is a harmonic voltage generator containing an oscillating element with a relay correction element 2.

Его недостаток тоже состоит в наличии на Тнлходе нелинейных искажений генерируемого сигнала из-за релейного характера корректирующего напр жени .Its disadvantage also consists in the presence of nonlinear distortions of the generated signal on the TL-switch due to the relay nature of the corrective voltage.

Цель изобретени - уменьшение нелинейных искажений.The purpose of the invention is to reduce nonlinear distortion.

Эта цель достигаетс тем, что генератор гармонического напр жени , содержащий соединенные последовательно cyMf/iaTop и два интегратора,This goal is achieved by the fact that a harmonic voltage generator containing connected in series cyMf / iaTop and two integrators,

выход первого интегратора через ре лейный элемент св зан с первым входом сумматора, а выход второго интегратора соединен с вторым входом сумматора, содержит гистерезисный нелинейный элемент, через который выход второго интегратора св зан с третьим входом сумматора.the output of the first integrator is connected via a relay element to the first input of the adder, and the output of the second integrator is connected to the second input of the adder, contains a hysteresis nonlinear element through which the output of the second integrator is connected to the third input of the adder.

На чертеже изображена схема гене10 ратора.The drawing shows a diagram of the generator 10.

Генератор содержит сумматор 1, интеграторы 2 и 3 релей ный элемент 4, гистерезисный нелинейный элемент 5.The generator contains an adder 1, integrators 2 and 3 a relay element 4, a hysteresis nonlinear element 5.

1515

Генератор работает следующим образом .The generator works as follows.

Claims

When the excitation conditions are met, increasing oscillations occur in the circuit. To create such conditions, relay element 4 is introduced into the positive feedback circuit. At its output, a rectangular oscillation of constant amplitude and a duty factor of 2, which forcing the increase in oscillations, is formed. At the moment when the output level of the hysteresis nonlinear element 5 reaches its output, a voltage drop occurs at its output, reducing the over-stimulation. The release of the hysteresis of the nonlinear element 5 occurs at the moment when the half-wave of the sinusoidal voltage is negative reaches its amplitude value. - If element 5 is made on the basis of a trigger, which is triggered by a positive and releasing at an equal negative voltage, then in the stationary (steady) mode at the outputs of relay 4 and hysteresis nonlinear 5 elms, rectangular voltages of equal amplitude and equal porosity act , the phase shift between which is equal to 180 °. As a result, over-excitation is eliminated and sinusoidal oscillations are guided in the circuit. Consequently, the correction signal in the stationary mode is zero, and the output oscillations have minimal non-linear distortions. A hysteresis element with an ambiguous nonlinear characteristic can also be made on the basis of a diode limiter and a storage capacitor or an active diode limit of bodies and an integrator covered by feedback t3. Thus, the introduction of a hysteresis nonlinear element made it possible in the stationary mode to compensate for the rectangular correction voltage from the output of the relay element and to reduce the level of nonlinear distortions to a minimum. When the amplitude of oscillations increases or decreases, for example, as a result of a disturbance, a corrective action occurs, which, respectively, dampens or forces the oscillations, eliminating the resulting mismatch. The transient time in the proposed generator is no more than one or two periods of generated voltage, the speed of the proposed generator in combination with small nonlinear distortions increases labor productivity when working with it and determines the technical and economic effect of using the invention. Claims A harmonic voltage generator comprising a series-connected adder and two integrators, the output of the first integrator being connected via a relay element to the first input of the adder, and the output of the second integrator connected to the second input of the adder, characterized in that, in order to reduce non-linear distortions, the generator contains a hysteresis nonlinear element through which the output of the second integrator is connected to the third input of the adder. Sources of information taken into account in the examination 1.T.Telbaum I.M., Schneider Yu.R. 400 circuits for AVM. M., Energie, 1978, p. 100.

2. USSR author's certificate number 132677, cl. C 06 ff 7/22, 1960 (prototype).

3.Tetelbaum IM, Schneider Yu.R. 400 circuits for AVM. M., Energie, 1978, p. 76-77

Have