SU982020A1 - Function genertor - Google Patents

Description

(54) FUNCTIONAL TRANSFORMER

Claims (2)

The invention relates to computing and can be used to build specialized computing devices that implement trigonometric transformations. A functional transducer is known, which contains a pulse generator, a frequency divider f 13 However, this transducer is characterized by insufficient accuracy. Most closely to the proposed is a functional transducer comprising a voltage generator, an adjustable pulse generator, from a voltage mailer, a pulse extraction unit, a frequency sharing and a switch. The device provides functional transformation according to the sine and cosine laws by measuring the instantaneous values of the sine-wave signals, phase 1 of KOdi-opHX corresponds to the values of the argument given by the taggraphic code (. The disadvantage of such a converter is the complexity required by the use of a reference voltage generator with elements formation of rectangular signals. A chain of acquisitions is an increase in the accuracy of the work. The goal is achieved by the fact that a functional converter containing A switch, a square pulse generator, the output of which is connected to the input of a frequency divider And the first input of a pulse extraction unit, the second input of which is the input of a converter, and the third input is connected to the first output of a frequency divider, and the output of the pulse separation unit is connected to a control input of the meter voltage, the output of which is the output of the converter, a pulse meander type meander and a narrow bandwidth are introduced, and the inputs by switching the bodies are connected to the second and third outputs of the divider. simplicity and you ± od pereklyu3 & chatepy through a meander-type pulse shaper soeshshen with uzkopoposnym filter whose output is connected to the input tshformatsionnomu voltage meter ... Such a construction of the converter makes it possible to eliminate the need for adjusting the frequency of the generator of rectangular pulses, which improves the accuracy of the conversion. In the proposed transducer-i, a sinusoidal signal is extracted from a signal of the square wave type and has a hard phase reference with counting pulses of instantaneous sinusoidal values. signal., The drawing shows a block diagram of a functional hepatic gene. The converter contains a generation of 1 rectangular pulses, a divider of 2 frequencies, a block 3 of selection of pulses, a switch 4, a shaper 5 of impedance square-wave type, a narrow band filter 6, and measure 7 for example. The device works as follows. One of two sequences of rectangular pulses with an output –t and shifted relative to each other is fed to the input of the imaging unit of 5 pulses of the square wave type through the switch 4 of operation mode from the outputs of the splitter 2 frequency. From the bipolar signal of the type of a square wave with a period T and impedance D, obtained in the former 5, the first harmonic signal is extracted with the help of a narrow-band signal 6. In steady state, the signal from the output of the narrowband filter. 6 is a sinusoidal voltage with a period T and amplitude A. The frequency of the following rectangular pulses of the pulse generator 1 is N i, where N is the capacitance of the divider 2 frequency, determined by the discreteness of the function argument representation. At the output of the block 3 selection of pulses. constructively implemented, for example, in the form of a code comparison unit or a frequency divider with a variable division factor, pulses are formed which, in accordance with the code of argument K. (), are delayed relative to the leading edge of the pulses from the third output 1 / 1V of the divider 2 frequencies by the time l4- -C ---. Y The multiple value of the sinusoidal voltage corresponding to the given pulse delay at the output of block 3 is given by the pulses equal to De, 1 m (L I /. 0 51M (lit M for the sinusoidal transformation nU -Acos (21C) d1 cosine transform. A voltage is measured by a 1: 1 voltage voltage detector (7) and is output by the device. Constructive measurement. 7 voltage contains a gated comparator, a reversible counter and a digital-to-analog converter included in the feedback circuit of the meter, and is a trace Analog-to-digital converter. This provides measurement with high accuracy of instantaneous voltage values both in analog form (at the output of the digital-analog converter) and in digital form (at the output of the reversing counter), Pogretino It is the device is determined only by the nonlinearity of the sinusoidal nagf Zheng and the error voltage meter and therefore less p6greshnostag known device, since this device is excluded error converting input code phase due to the uncertainty of the phase avtopodstroykl oscillator frequency rectangular pulses. The nonlinearity of a sinusoidal voltage of a constant frequency extracted from a voltage of the type of a square wave with the help of a narrow-band filter, depends on the quality of the square wave and on the selector of the filter. And may be less than 0.1%. Thus, the elimination in the proposed functional converter of the need to adjust the frequency of the square pulse generator improves the conversion accuracy. A functional converter comprising a switch, a square pulse generator, the output of which is connected to the input of a frequency divider and the first input of a pulse extraction unit, the second input of which is the input of a converter, and the third input is connected to the first output of a frequency splitter and the output of the pulse separation unit connected to a control input of a voltage meter, the output of which is the output of a converter, characterized in that, in order to increase the accuracy of operation, e; Enan the pulse shaper of the meander type and narrowband (| iltr, besides the inputs of the hgvp are connected with the second and third: The output of the frequency detuner and the output of the switch is connected with the narrowband filter whose output is connected to the informational switch input measured tsel tension. Sources of information taken into account. At E1 (from 1 1, USSR Author's Certificate No. 44934, кп. Q66Q 7/26, 1973. 2. USSR author's certificate number 736128, cl. GiOeG 7/26, 1978 (iipCriSLriiiit /.