SU142359A1 - Method for automatic balancing of an ac electric bridge - Google Patents

Method for automatic balancing of an ac electric bridge

Info

Publication number
SU142359A1
SU142359A1 SU662581A SU662581A SU142359A1 SU 142359 A1 SU142359 A1 SU 142359A1 SU 662581 A SU662581 A SU 662581A SU 662581 A SU662581 A SU 662581A SU 142359 A1 SU142359 A1 SU 142359A1
Authority
SU
USSR - Soviet Union
Prior art keywords
bridge
electric bridge
automatic balancing
balancing
phase
Prior art date
Application number
SU662581A
Other languages
Russian (ru)
Inventor
Ф.Б. Гриневич
Original Assignee
Ф.Б. Гриневич
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ф.Б. Гриневич filed Critical Ф.Б. Гриневич
Priority to SU662581A priority Critical patent/SU142359A1/en
Application granted granted Critical
Publication of SU142359A1 publication Critical patent/SU142359A1/en

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Description

Насто щее изобретение относитс  к способам автоматической балансировки электрического моста переменного тока по двум параметрамПредлагаемый способ отличаетс  от известных тем, что параметры двух плеч моста модулируют с различными частотами, либо с одной и той же частотой и со сдвигом по фазе на 90°, а напр жени  выхода моста подают на два электрических двигател , обмотки возбуждени  которых питают переменными токами с различными частотами, соответствующими частотам модул ции, либо током одной и той же частоты, со сдвигом в 90° по фазе. При этом каждый из двигателей в отдельности используют дл  регулировани  одного из плеч моста и одновременного уравновещивани  последнего по активной и реактивной составл ющим измер емого сопротивлени .The present invention relates to methods for automatically balancing an electric AC bridge in two ways. The proposed method differs from the known ones in that the parameters of the two arms of the bridge are modulated with different frequencies, or with the same frequency and phase shift of 90 °, and the voltage The outputs of the bridge are fed to two electric motors, the excitation windings of which are fed by alternating currents with different frequencies corresponding to the modulation frequencies, or the current of the same frequency, with a shift of 90 ° in phase. In this case, each of the motors is separately used to regulate one of the bridge arms and simultaneously balance the latter by the active and reactive components of the measured resistance.

Применение такого способа обеспечивает упрощение процесса балансировки мостаПа чертеже изображена схема балансировки моста по предлагаемому способу.The use of this method provides a simplification of the process of balancing the bridge. The drawing shows the scheme of balancing the bridge according to the proposed method.

В цел х раздельной индикации напр жений, определ ющих стеlieHb и знак разбаланса моста, составленного из сопротивлений Z,, Zj, 3 и Zi, по активной и реактивной составл ющим, параметры р q соответствующих плеч модулируютс  различными некратными частотами или одной частотой, но со сдвигом по фазе в 90°.For the purpose of separate indication of voltages that determine the class Hb and the sign of the unbalance of the bridge, made up of resistors Z ,, Zj, 3 and Zi, along active and reactive components, the parameters p q of the respective arms are modulated by different non-multiple frequencies or one frequency, a phase shift of 90 °.

В частности, модул ци  параметров р п q может осуществл тьс  о г сети переменного тока посредством параметрических модул торов Л/,п Mfg, управл ющие напр жени  которых сдвинуты по фазе друг относительно друга на угол 4 90°. Выходное напр жение моста, модулированное по амплитуде и фазе, подаетс  на избирательный усилитель ИУ и затем - на детектор Д. После детектировани  выдел етс  его огибаIn particular, the modulation of the parameters p p q can be made on the ac network by means of parametric modulators A /, n Mfg, the control voltages of which are phase-shifted relative to each other by an angle of 4 to 90 °. The output voltage of the bridge, modulated in amplitude and phase, is applied to the selective amplifier of the DUT and then to detector D. After detection, its curvature is selected.

SU662581A 1960-04-09 1960-04-09 Method for automatic balancing of an ac electric bridge SU142359A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU662581A SU142359A1 (en) 1960-04-09 1960-04-09 Method for automatic balancing of an ac electric bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU662581A SU142359A1 (en) 1960-04-09 1960-04-09 Method for automatic balancing of an ac electric bridge

Publications (1)

Publication Number Publication Date
SU142359A1 true SU142359A1 (en) 1960-11-30

Family

ID=48298221

Family Applications (1)

Application Number Title Priority Date Filing Date
SU662581A SU142359A1 (en) 1960-04-09 1960-04-09 Method for automatic balancing of an ac electric bridge

Country Status (1)

Country Link
SU (1) SU142359A1 (en)

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