Multiphase functional generator
(57) Abstract:The generator can be used in conversion devices good as utility power output voltage, modeling and computing devices. The purpose of the invention is to simplify, improve reliability and economic efficiency. The generator consists of multiple bridge inverters constituting the bit blocks are connected on the output in series with each other and a load element. The power of each cell is from the independent voltage source or from mnogolyudnogo Converter. The synthesis of the shape of the output voltage is stepped its approximation, and control of the inverters is based on the ternary notation from block job mode. 1 Il. The invention relates to electrical engineering, computer engineering and automation and can be used in conversion devices good as utility power output voltage, for example, for stable drive, when generating a periodic trigonometric functional stresses for modeling and computing systems for high power installations with an output kV the completion of the reduction mass-dimensional indices devices use high-frequency intermediate energy conversion and representation of integers natural numbers using a symmetric multivalued code. This may be formed all the voltage levels required to generate a given periodic function, approximated by a stepped shape of the curve.The drawbacks are in principle required in the transformer and the keys AC, which increases the cost and weight and dimensions of the device and reduces its reliability.Closest to the proposed is a functional generator  uses the ternary notation in the control algorithm and synthesis of the output voltage of the inverter, and also uses high-frequency power conversion, and power demodulator performed in a bridge circuit.The disadvantage of the prototype is the use of a large number of keys AC, including in bridged demodulator.The task of the invention is to simplify the functional generator. This is achieved through the use of a number of isolated primary power sources.The drawing shows a diagram of one phase of the functional generator. In the reception generator built on digit scheme. Every bit as the unit consists of bridge investment is 4 and heat recovery diodes 4144. The inverter output circuits are connected in series between a load-carrying element 2. Control of the inverter is supplied from block 6 of the task of the modes.The generator works as follows.The voltage sources 5 and 5' are related to each other as 1:3. In the algorithm, key management transistors in inverter cells use the ternary system (0, 1). When the switching transistor load element 2 voltage sources 5 and 5' at different points in time can be, deducted or excluded, forming on the different load speed-approximating unipolar or bipolar, periodic or non-periodic voltage. The accuracy of the approximation depends on the number of used bits. The maximum number of steps (K) of one polarity can be calculated by the formula:
where n is the number of digits.When switching, for example, keys 32and 33in the inverter 1 and 3 keys1and 33in the inverter 1' adds the element 2 voltage sources 5 and 5'. When switching same diagonal pairs of keys in both inverters is Venta voltage sources for example 5, in the inverter 1 to open the keys belonging to one of the floors of the bridge 3134or 3233. Unit 6 set mode generates a set of pulses in each discrete time for key management overhead of cells in accordance with the selected approximating function.Functional generator differs from the known analogs and prototypes as follows.1. The scheme contains no bulky power wrap elements (transformers), which improves overall mass properties generator.2. The scheme does not contain keys alternating current, which reduces the cost and increases the reliability of the device.3. The scheme is not critical to the output frequency of the function generator, because there is no transformers.4. Increased efficiencyThe most promising direction is the use of functional generator is the transformation of solar energy, chemical energy batteries, in which there is the possibility of forming a separate isolated voltage sources into the energy of an alternating current with an arbitrary form of voltage. Multi-phase function generator containing a chain of sequential matching last bit blocks, characterized in that it introduced the power source and the power setting mode, each bit block is made in the form of a bridge inverter, the power source is designed as a group of independent sources of voltage, the conclusions of each of which are connected to respective inputs of the power of the eponymous bridge inverters, control inputs which are connected to the outputs of block job mode.
FIELD: automatics and computer science, possible use in information compression equipment in television, multi-channel communications, telemetry for representing varying messages and signals in Walsh basis.
SUBSTANCE: generator has set-point element, NOT element, shift register, function number register, AND element, trigger, n-digit counter and additional AND element.
EFFECT: simplified generator due to decreased number of triggers, used as shift register digits.
3 dwg, 4 tbl
FIELD: electric communication area, in particular, engineering of orthogonal functions generators, possible use for engineering generator equipment for communication systems.
SUBSTANCE: generator of functions contains set-point generator, block for forming Walsh functions, element of one-sided conductivity, two-bit shift register, two-input commutator, multiplier and 2n group multipliers.
EFFECT: increased energetic concealment of signals, created by generator.
FIELD: engineering of specialized computer means, possible use for engineering generator equipment, and also solving boundary problems of mathematical physics.
SUBSTANCE: device contains three integrators, multiplication blocks, adder, inverter, analog-digital converter, five analog-digital converters of first group, three analog-digital converters of second group and two memory blocks.
EFFECT: expanded functional capabilities due to reproduction of all classes of orthogonal functions, being solutions of second-order differential equations.
1 dwg, 1 tbl
FIELD: measurement technology; generating test signals with preset probability characteristics.
SUBSTANCE: proposed method for generating test signal incorporating desired distribution probability function F(x) concerning occurrence of instant test signal amplitude values x(t) depends on generation of original signal r(t) with uniform distribution of instant amplitude values within the range of 0 to 1 and its functional conversion; generated as original signal r(t) is determinated signal with period T0 for which purpose signal φ(t) varied obeying known law and using desired algorithm is functionally converted.
EFFECT: enhanced precision of generated signal incorporating desired probability distribution function.
FIELD: information technologies.
SUBSTANCE: analytical method is created to produce signal probability distribution function (PDF) at the system output (initial system). This method is applicable, if: the system is described by analytical function; the system depends on accidental value; PDF of accidental value at the system input is available. There is an inverse function to function that describes system. Created method solves the following formal task. To produce PDF analytically for specified function y(x), if PDF of accidental value x in the interval [a,b] is available.
EFFECT: increased accuracy of production of probability characteristics of initial signal.
FIELD: measurement equipment.
SUBSTANCE: self-oscillation generator by Prokofyev includes an LC oscillating circuit, a scaling operating amplifier, a non-linear feedback that includes a resistive summing network for two inputs, a normally open fixed contact of an electronic switch of a pulse non-linear element that includes a RS trigger and two comparators, chains of introduction of special initial conditions of regulated oscillations (RO), which consist of a single toggle switch of RO+ and RO- modes, a double start-up toggle switch and resistors, control voltage potentiometer A, voltage sources, a start-up capacitor; regulated stabilised self-oscillations, which are steady-state as to amplitude at the output of the scaling operating amplifier, are determined with the specified ratios of parameters of the elements expressed in the form of mathematical expressions.
EFFECT: enlarging the application area of regulated oscillations.
FIELD: radio engineering, communication.
SUBSTANCE: function generator comprises a comparator circuit, a multiplier, a first adder, first and second controlled integrators, an inverter, a relay element, first and second squaring devices, a second adder, a square-root computer and a triangular waveform generator.
EFFECT: broader functional capabilities and maintaining high linearity of a triangular waveform with variation of the amplitude of quadrature harmonic signals in a wide range.
2 cl, 4 dwg
SUBSTANCE: chaotic oscillation generator contains two inductive elements, two capacitors, two resistors, a semiconductor voltage converter by means of which the characteristics of generated oscillations are regulated, and a load.
EFFECT: providing of signal modelling described by piecewise and linear differential equations characterizing the occurring periodic, quasi-periodic and chaotic oscillations.
2 cl, 5 dwg
SUBSTANCE: method for constructing an adaptive automatic excitation control system, which consists in the fact that the coefficients of the stabilization channels of the automatic excitation controller are adjusted for changing the values of the parameters of the equivalent circuit "generator-line-infinite buses (IB)" and the voltage regulator gain so that the transient processes under the disturbing and controlling actions have an aperiodic or a nature close to it.
EFFECT: determination of the optimal adjustment of the AEC stabilization channels for various circuit-mode operating conditions of the generator, adaptation of the automatic excitation control systems to work with different types of synchronous generators.