SU980222A1

SU980222A1 - Inductosyn-phase shifter

Info

Publication number: SU980222A1
Application number: SU813310972A
Authority: SU
Inventors: Лев Николаевич Сафонов; Алексей Андреевич Мелихов; Яков Александрович Гассох
Original assignee: Предприятие П/Я В-8618
Priority date: 1981-06-26
Filing date: 1981-06-26
Publication date: 1982-12-07

Description

Изобретение относится к автоматике и может быть использовано при создании прецизионных угломерных устройств.The invention relates to automation and can be used to create precision goniometric devices.

Известны индуктосины, содержащие однофазную обмотку ротора и двухфазную обмотку статора, каждая фаза обмотки статора разделена на несколько независимых и равномерно расположённых секций С11. ' ’Inductosines are known containing a single-phase rotor winding and a two-phase stator winding, each phase of the stator winding is divided into several independent and evenly spaced sections C11. '’

Недостаток таких индуктосинов погрешность, вызванная влиянием нескомпенсированных токов в лобовых частях индуктосина.The disadvantage of such inductosins is the error caused by the influence of uncompensated currents in the frontal parts of inductosin.

Известны также индуктосины, содержащие две многослойные двухфазные обмотки, роторную и статорную, каждая фаза одной из обмоток разделена на две полуфаэы, а в каждом слое расположены полуфазы различных фаз обмотки [2].Inductosines are also known, containing two multilayer two-phase windings, a rotor and a stator, each phase of one of the windings is divided into two half-phases, and in each layer there are half-phases of different phases of the winding [2].

Недостаток указанного индуктосинаограниченная точность.The disadvantage of this inductosine limited accuracy.

Наиболее близким к предлагаемому является индуктосин-фазовращатель, содержащий первичную многофазную обмотку и вторичную обмотку с любым числом фаз, вторичная обмотка каждой фазы разделена на несколько независимых и равномерно расположенных сек· ций, соединенных последовательновстречно [3].Closest to the proposed one is an inductosin phase shifter containing a primary multiphase winding and a secondary winding with any number of phases, the secondary winding of each phase is divided into several independent and evenly spaced sections connected in series [3].

Недостатком известного индуктоси5 на является повышенная чувствительность к погрешности взаимной ориентации обмоток ротора и статора индуктосина, что увеличивает погрешности измерения угла.A disadvantage of the known inductosyn5 is increased sensitivity to the error of the mutual orientation of the windings of the rotor and stator of inductosin, which increases the error in measuring the angle.

1Q Цель изобретения - повышение точности индуктосина-фазовращателя.1Q The purpose of the invention is to improve the accuracy of the inductosin phase shifter.

Поставленная цель достигается тем, что в индуктосин-фазовращатель, содержащий первичную многофазную обмотку и вторичную обмотку с любым числом '5 фаз, вторичная обмотка каждой фазы разделена на несколько независимых и равномерно расположенных в измеряемом диапазоне секций, введены уси• лители со стабилизированным уровнем 20 выходного сигнала и блоки суммирования, выходы вторичной обмотки каждой фазы через соответствующий усилитель подключены к соответствующему блоку суммирования.This goal is achieved by the fact that in the inductosyn-phase shifter containing the primary multiphase winding and the secondary winding with any number of '5 phases, the secondary winding of each phase is divided into several independent and evenly spaced sections in the measured range, amplifiers with a stabilized level of 20 output the signal and the summing blocks, the outputs of the secondary winding of each phase through a corresponding amplifier are connected to the corresponding summing block.

На чертеже изображена схема индуктосина-фазовращателя.The drawing shows a diagram of inductosin-phase shifter.

Устройство содержит первичную многофазную обмотку 1 любой известной конструкции, секции фазы вторичной 30 обмотки 2, усилители 3 со стабилиза3 дней уровня выходного сигнала, суммирующий блок 4.The device comprises a primary multiphase winding 1 of any known design, a phase section of secondary 30 of winding 2, amplifiers 3 with stabilization 3 days of the output signal level, summing unit 4.

Индуктосин-фазовращатель работает следующим образом.Inductosin phase shifter operates as follows.

При подключении многофазного напряжения к многофазной обмотке 1 (в иде-5 альной случае полная симметрия многофазного напряжения) в секциях фазы вторичной обмотки при наличии эксцентриситетов и перекосов обмоток возникает фазомодулированное напряже· Ю ние, амплитуда и фаза паразитной модуляции которого определяются эксцентриситетами и перекосами обмоток ротора и статора и углами между напряжениями перекосов и эксцентриси- 15 тетов и в общем случае величины случайные .When a multiphase voltage is connected to multiphase winding 1 (in the ideal case, the full multiphase voltage is completely symmetrical) in the sections of the secondary winding phase in the presence of eccentricities and distortions of the windings, phase-modulated voltage appears, the amplitude and phase of which stray modulation are determined by the eccentricities and distortions of the rotor windings and the stator and the angles between the distortions and eccentric stresses are 15 theta, and in the general case the values are random.

При суммировании выходных напряжений секций, что имеет место в известных фазовращателях, результирующий ,θ сигнал будет содержать в аргументе остаточную фазовую модуляцию, возникающую от того, что в выходных напря¹жениях секций имеется амплитудная модуляция с произвольным фазовым 25 сдвигом.When summing the output voltages of the sections, as is the case with known phase shifters, the resulting θ signal will contain in the argument residual phase modulation arising from the fact that the output voltages ^{of the} sections have amplitude modulation with an arbitrary 25 phase shift.

Напряжения на выходе усилителей 3 уже не будут содержать амплитудную модуляцию из-за стабилизации уровня выходного сигнала усилителей 3.The voltage at the output of the amplifiers 3 will no longer contain amplitude modulation due to the stabilization of the output signal level of the amplifiers 3.

В результате выходной сигнал суммирующего блока не содержит паразитной фазовой модуляции, т.е. фазовращатель освобождается от погрешности, вызванной малыми эксцентриситетами и перекосами. 55As a result, the output signal of the summing block does not contain stray phase modulation, i.e. the phase shifter is freed from the error caused by small eccentricities and distortions. 55

На практике из-за методических погрешностей и неточности стабилизации в усилителях 3 полностью скомпенсировать погрешность от эксцентриситетов и перекосов не удается.In practice, due to methodological errors and inaccuracy of stabilization in amplifiers 3, it is not possible to completely compensate for the error from eccentricities and distortions.

Claims

(54) INDUKTOSIN-PHASOVER The invention relates to automation and can be used to create precision goniometric devices. Inductosins are known that contain a single-phase rotor winding and a two-phase stator winding, each phase of the stator winding is divided into several independent and evenly spaced Cl sections. The lack of such inductosins is the error caused by the influence of uncompensated currents in the frontal parts of the inductosin. Inductosines are also known, containing two multilayer two-phase windings, rotor and stator, each phase of one of the windings is divided into two half-phases, and in each layer there are half-phases of different phases of the winding C2. The disadvantage of this inductosin is limited accuracy. The closest to the present invention is an inductosyn phase shifter containing a primary multiphase winding and a secondary winding with any number of phases, the secondary winding of each phase is divided into several independent and evenly spaced sections that are connected in series 3). A disadvantage of the known inductosin is the increased sensitivity to the error in the relative orientation of the windings of the rotor and stator inductosin, which increases the error in measuring the angle. The purpose of the invention is to improve the accuracy of the inductosin phase shifter. The goal is achieved by the fact that the secondary winding of each phase is divided into several independent and uniformly arranged in the measured range of sections, in the induktosin phase shifter containing the primary multiphase winding and the secondary winding with any number of phases, amplifiers with a stabilized output signal and summation blocks are introduced The outputs of the secondary winding of each phase through a corresponding amplifier are connected to the corresponding summation unit. The drawing shows a diagram of the inductosin phase shifter. The device contains a primary multiphase winding 1 of any known construction, a section of the phase of the secondary winding 2, amplifiers 3 with a stabilized output signal level, the summing unit 4. The induction-phase shifter works as follows. When a multiphase voltage is connected to a multiphase winding 1 {in an ideal case, full symmetry of a multi-phase voltage), in sections of the secondary winding phase, in the presence of eccentricities and parasite windings, a phase-modulated voltage occurs, the amplitude and phase of parasitic modulation of which are determined by the eccentricities and by the winding of the rotor and the stator and angles between the stresses of the distortion and eccentricities, and in the general case, the values are random. When summing the output voltage sections, which takes place in the known phase shifters, the resulting signal will contain in the argument the residual phase modulation resulting from the fact that the output voltages of the sections have amplitude modulation with an arbitrary phase shift. The voltages at the output of the amplifiers 3 will no longer contain amplitude modulation due to the stabilization of the level of the input signal of the amplifiers 3. As a result, the output signal of the summing unit does not contain parasitic phase modulation, i.e. the phase shifter is freed from the error caused by small eccentricities and warps. In practice, due to methodological errors and inaccuracy of stabilization in amplifiers 3, it is not possible to fully compensate for the error due to eccentricities and distortions. The invention of the Inductosin Phaser containing the primary-multiphase winding and the secondary winding with any number of phases, the secondary winding of each phase is divided into several independent and evenly spaced sections within the measurable range, characterized in that, in order to improve the accuracy of the inductosine phase changer , amplifiers with a stabilized level of the output signal and summation blocks are introduced into it, the secondary windings of each phase are connected to the appropriate summation unit through the appropriate amplifier ani Sources of information taken into account in the examination 1. US patent number 2844802, cl. 336-123, published in 1958.

2. USSR author's certificate number 610256, cl. H 02 K 24/00, 1976.

3. Electromechanical angle transducers with electrical reduction. Ed. A.Ahmetzhanova M., Energie, 1978, p. 117, fig. 4.1 (prototype)

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