SU864197A1

SU864197A1 - Fuction generator

Info

Publication number: SU864197A1
Application number: SU792844331A
Authority: SU
Inventors: Виктор Васильевич Юдин
Original assignee: За витель В.в. Юдин
Priority date: 1979-11-02
Filing date: 1979-11-02
Publication date: 1981-09-15

Description

(54) ФУНКЦИОНАЛЬНЫЙ ПРЕОБРАЗОВАТЕЛЬ(54) FUNCTIONAL CONVERTER

1one

Изобретение относитс к автоматике и измерительной технике и может найти применение при воспроизведении различных нелинейных зависимостей, например дл осуществлени компенсации нелинейности характеристик датчиков .The invention relates to automation and measurement technology and can be used to reproduce various non-linear relationships, for example, to compensate for the non-linearity of sensor characteristics.

Известен функциональный преобразователь , выполненный на Ш-образном ферромагнитном сердечнике с входной оВмоткой, обмоткой размагничивани , расположенными на центральном стер сне сердечника, и выходными обмотками , расположенными на боковых стержн х и соединенными последовательно. Входна обмотка подключена .через резистор , а обмотка размагничивани через выпр митель к генератору переменного напр жени . Обмотка подмагничивани подключена к источнику тока Ш- .A known functional transducer is made on an W-shaped ferromagnetic core with an input winding, a demagnetization winding located on the central erase core, and output windings located on the side rods and connected in series. The input winding is connected through a resistor, and the demagnetization winding through a rectifier to an alternating voltage generator. The bias winding is connected to the current source W-.

Недостатком известного функционального преобразовател вл етс то, что вследствие неидеальности выпр мител в размагничивающей обмотке протекает пульсирующий ток. Созданный им магнитный поток индуцирует в выходных обмотках ЭДС, котора , суммиру сь с ЭДС гармонического сигнала, приводит к заМетному искажению формы выходного сигнала .A disadvantage of the known functional converter is that, due to the non-ideality of the rectifier, a pulsating current flows in the demagnetizing winding. The magnetic flux created by him induces an emf in the output windings, which, summing up with the harmonic signal emf, leads to a noticeable distortion of the output signal.

Аналогичным образом действует переменна составл кща тока, возникающего в обмотке подмагничивани под действием пронизываквдего ее переменного магнитного потока.Similarly, a variable component of the current arising in the bias winding under the action of a direct flux of its alternating magnetic flux acts.

Цель изобретени - повышение точности .The purpose of the invention is to improve accuracy.

10ten

Цель достигаетс тем, что в функциональный преобразователь, содержащий Ш-образный ферромагнитный сераечиик , на центральном бтержне которого размещены входна обмотка, The goal is achieved by the fact that a functional transducer, containing an W-shaped ferromagnetic gray, with the input winding located on its central rod,

Claims

15 connected through a resistor to an alternating voltage generator, and demagnetized winding, connected through a rectifier to a coupled generator, as well as two output windings connected in series and marked on the side core rods and a bias winding connected to the current source, two additional windings were inserted and a capacitor connected in series, with additional windings placed on the side rods of the 1nik heart in the form of a figure eight, and the sub-magnetization winding is located on the center flax core core. The drawing shows the block diagram of the functional Converter. The functional transducer contains a W-shaped core of ferrous material, on the central rod 2 of which the bias winding 3 is connected, connected to the current source 4, the input winding 5, connected through a resistor to the alternating voltage generator 7, as well as the demagnetizing winding 8, connected through rectifier 9 to the generator 7. On the side terminals 10 and 11 of the core 1 are placed the output windings 12 and 13 and the additional windings 14 and 15. The additional windings 14 and 15 are arranged in the form of eight and are connected consequently to the capacitor 16. The operation is as follows. When the additional windings 14 and 15 are switched on by the eight and they are connected to the capacitor 16, the phase shift of the magnetic flux occurs in the lateral windings x 10 and 11. At this if in one side bar 10 this phase shift is positive, in the other core 11 it is negative. In the event that the loss in core 1 is small, the phase shifts approach JT / 2. Therefore, the variable components of the magnetic flux begin to circulate along the side rods 10 and 11, to the central core

2. This phenomenon is an analogue of the resonance of currents in a parallel oscillating circuit. The presence of distortions in the EMF demagnetizing about the coils 8 and the bias winding 3 located on the central rod 2 does not significantly affect the output waveform, since the magnetic circuit of the core 1 has filtering properties (only 10 the harmonic component on which resonance is observed). The invention includes a functional transducer comprising an W-shaped ferromagnetic core, on the central rod of which an input winding is connected, connected via a resistor to an alternating voltage generator, and a demagnetizing winding connected via a rectifier to said generator, as well as two output windings connected in series and placed on the side rods of the core and the bias winding connected to the current source, which is based on the fact that, in order to improve the accuracy, We have two additional windings and a capacitor connected in series, with the additional windings placed tia of the side core rods in the shape of a figure eight, and the bias winding is located on the central (1 core core. Information sources taken in the USSR 653729 certificate , CL H 03 F 9/00, 1976.