SU911558A2

SU911558A2 - Controllable generator of harmonic signals

Info

Publication number: SU911558A2
Application number: SU792771309A
Authority: SU
Inventors: Василий Васильевич Алексеев; Витольд Александрович Дартау; Юрий Павлович Павлов
Priority date: 1979-05-21
Filing date: 1979-05-21
Publication date: 1982-03-07

Description

(54) УПРАВЛЯЕМЫЙ ГЕНЕРАТОР ГАРМОНИЧЕСКИХ СИГНАЛОВ(54) CONTROLLED HARMONIC SIGNAL GENERATOR

Изобретение относитс к аналоговой вычислительной и измерительной технике и может быть использовано в качестве задающего генератора.The invention relates to analog computing and measurement technology and can be used as a master oscillator.

По основному авт. св. № 769563 известен управл емый генератор гармонических сигналов, содержащий два интегрирующих усилител , первые входы которых подключены к выходам соответственно первого и второго блоков умножени , а выходы к соответствуюцим сигнальным входам стабилизатора амплитуды и первым входам соответствейно второго и первого суммирующих усилителей, выходы которых подключены к вторьм входам соответствующих блоков умножени , а вторые входы к соответствующим регулирующим выходам стабилизатора амплитуды, вход уставки которого соединен с первым управ-л к циМ входом генератора, вторые входы интегрирующих усилителей подключены к выходам блока задани начальных условий, а первые входы блоков умножени соединены с вторым управл ющим входом генератора Cl.According to the main author. St. No. 769563 is a known controlled harmonic signal generator containing two integrating amplifiers, the first inputs of which are connected to the outputs of the first and second multiplicators, respectively, and the outputs to the corresponding amplitude stabilizer signal inputs and the first inputs of the second and first summing amplifiers, whose outputs are connected to the second the inputs of the respective multiplication units, and the second inputs to the corresponding regulating outputs of the amplitude stabilizer, the input of which is connected to the first the control to the generator input to the generator, the second inputs of the integrating amplifiers are connected to the outputs of the initial conditions setting unit, and the first inputs of the multiplication units are connected to the second control input of the generator Cl.

Однако известный генератор обладает недостатком, заключающимс в том, что при задании нулевой частоты на входах интегрирующих усилителей отсутствуют сигналы стабилизирующих обратных св зей.However, the known generator has the disadvantage that when setting the zero frequency at the inputs of the integrating amplifiers, there are no signals of stabilizing feedback.

Цель изобретени - улучшение стабилизации уровн выходных сигналов на частотах, близких к нулевой.The purpose of the invention is to improve the stabilization of the level of the output signals at frequencies close to zero.

Указанна цель достигаетс тем, что в управл емом генераторе гармонических сигналов третьи входы интегрирующих усилителей подключены к соответствующим регулирующим выходам стабилизатора амплитуды.This goal is achieved by the fact that in the controlled harmonic generator, the third inputs of the integrating amplifiers are connected to the corresponding regulating outputs of the amplitude stabilizer.

На чертеже представлен управл емый генератор гармонических сигналов.The drawing shows a controlled harmonic generator.

Генератор содержит стабилизаторThe generator contains a stabilizer

1амплитуды, интегрирующие усилители1 amplitude integrating amplifiers

Claims

2 and 3, 9 and 4 and 5 multiplications, summing amplifiers 6 and 7, block 8, specifying initial conditions. Positions 9 and 10 designate the inputs for setting the frequency and amplitude respectively. The generator operates as follows. The control signal applied to the generator input 9 determines the gain in the circuit and the frequency of the generated oscillations. The voltage applied to input 10 determines the amplitude of the oscillations. The signals from the outputs of amplifiers 2 and 3 are fed to the inputs of stabilizer I. As a result, amplitude stabilization signals are received from the outputs of the stabilizer to the inputs of summing amplifiers 6 and 7, and the feedback coefficient is determined by the relative error in amplitude and feedback The error sign is amplitude: if the specified amplitude is greater than the real one, then the feedbacks are positive, otherwise negative, and if. if they are equal, the feedback coefficients are zero. After summing up the amplifiers 6 and 7 of the error signal and the main signal, the regulating signals are fed to the inputs of blocks 4 and 5. Thus, multipliers 4 and 5 determine the gain of amplifiers 2 and 3 and from the error signal. As a result, the coefficient of the stabilizing feedbacks of amplifiers 2 and 3 is determined by the value of the specified 84 frequency QH /, and quality; transient stabilization is independent of the frequency of the signals. The stabilization signals from the stabilizer-ora 1 outputs coming to the third inputs of amplifiers 2 and 3 ensure, due to the large resistance of these inputs, the stabilization of the output signals level only at the frequency uj 0 and close to zero when the stabilizing feedbacks of amplifiers 2 and 3 along the second inputs is zero. The technical and economic effect of using the invention is determined by the improvement of the quality of the generated signal at the same hardware costs. Claims of the invention Controlled harmonic signal generator according to aut. St. No. 769563, characterized in that, in order to improve the stabilization of the output signal level at frequencies close to zero, the third inputs of the integrating amplifiers are connected to the corresponding regulating outputs of the amplitude stabilizer. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 769563, cl. G 06 G 7/26, 1978.