Development of LVDT (Linear Variable Differential Transformer) sensor as land displacement sensor

Jefriyanto, Wilson; Saka, Bergita Gela M.; Pineng, Martina; Djamal, Mitra

doi:10.1088/1742-6596/1528/1/012041

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…1. This circuit includes one primary winding and two secondary windings, wound opposite to each other [1,2].…”

Section: Mathematical Model Of the Lvdt Sensor Without Inter-winding ...mentioning

confidence: 99%

“…Linear variable differential transformer (LVDT) sensors are the type of devices that are widely used in industry to measure displacement or linear position, due to their precision, reliability, and ability to operate in harsh environmental conditions [1,2]. They are typically deployed in measuring instruments where the accuracy of displacement or distance measurement is crucial, for example in thickness gauges, micrometers and other measuring tools [3], and can be used to monitor and control the positions of moving parts in industrial machines, such as pistons, shafts, and guides, or to control the positions of valves, trolleys, robot arms and other components.…”

Section: Introductionmentioning

confidence: 99%

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Procedure for Determining the Upper Bound on Absolute Error for LVDT Sensors

Szul,

Tomczyk

2024

J. Phys.: Conf. Ser.

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This paper presents the procedure for determining the upper bound on absolute error (UBAE) for linear variable differential transformer (LVDT) sensors without inter-winding capacitance. This procedure is based on the results of a parametric identification of the sensor, from which the coefficient values of the corresponding transfer function are obtained. The UBAE is then determined by a simulation experiment using dedicated computational software. The error value and the shape of the input signal, which is constrained in magnitude, are determined. The calculations and additional validation of the procedure presented in this article are carried out using the MathCad 5.0 program. As the basis for the proposed procedure, we review issues related to the modelling of LVDT sensors without inter-winding capacitance. The solutions presented here can be used to determine the UBAE, which can then be used to assess the accuracy of these types of sensor and their mutual comparability in terms of dynamic accuracy.

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“…1. This circuit includes one primary winding and two secondary windings, wound opposite to each other [1,2].…”

Section: Mathematical Model Of the Lvdt Sensor Without Inter-winding ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Procedure for Determining the Upper Bound on Absolute Error for LVDT Sensors

Szul,

Tomczyk

2024

J. Phys.: Conf. Ser.

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“…Sedangkan pada sudut 50 0 terjadinya pergeseran tanah yaitu pada selang waktu 2.000 sekon. Pada awalnya pergeseran tanah pada sudut 45 0 yang paling besar, namun seiring dengan waktu penyiraman terlihat sudut 50 0 memiliki pergeseran yang paling besar, hal ini dipengaruhi oleh gaya yang bekerja pada sistem ini, dimana semakin besar sudut kemiringanya maka semakin besar pula gaya tarik dari tanah yang menyebabkan pergeseran terjadi (Jefriyanto, 2020) Gambar 7. Data pergeseran tanah tiap sudut Pada waktu lama penyiraman 18.000 sekon atau 5 jam besarnya pergeseran pada sudut 40 0 , 45 0 , dan 50 0 yaitu 5.5 mm, 27,6 mm dan 28,3 mm.…”

Section: Simulasi Monitoring Pergeseran Tanah Menggunakan Sensor Lvdtunclassified

Simulasi Monitoring Pergeseran Tanah Menggunakan Sensor LVDT (Linear Variable Differential Transformer)

et al. 2021

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Pergeseran tanah merupakan salah satu faktor terjadinya tanah longsor (landslide). Untuk itu, diperlukan suatu prototype alat yang dapat membantu memberikan informasi dini dan peringatan akan terjadinya longsor. Telah dilakukan penelitian tentang simulasi pergeseran tanah dengan menggunakan sensor LVDT (Linear Variable Differential Transformer). Sensor LVDT dihubungkan dengan Arduino uno yang kemudian ditampilkan pada LCD dan juga monitoring pada komputer. Pengamatan pergeseran tanah dilakukan selama 5 jam dengan melakukan variasi terhadap sudut kemiringan tanah. Tujuan dari penelitian ini yaitu untuk menguji kerja dari sensor LVDT yang merupakan hasil dari penelitian sebelumnya. Dari hasil pengamatan, terlihat bahwa sensor LVDT ini mampu membaca pergeseran tanah dengan ketlitian 0.01 mm. Adapun jangkauan pergeseran alat ini yaitu hany sampai 14 cm, untuk penelitian selanjutnya akan dikembankan sensor LVDT dengan jangkaun pengukuran yang lebih panjang.

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“…A Linear Variable Differential Transformer (LVDT) is a magnetic position transducer for linear displacement measurement, and as it offers high resolution, accuracy, and good repeatability, is widely applied [1][2][3][4]. An LVDT sensor is composed of three coils that include one primary coil with a cylindrical shape in the center and two secondary coils wound on each side of the primary one, has a high permeability core inside the coils, and has a magnetic shell outside [5].…”

Section: Introductionmentioning

confidence: 99%

The Modelling and Design of a Linear Variable Differential Transformer

Yang

Bae

2021

Int. J. Precis. Eng. Manuf.

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In the design and improvement of an LVDT, theoretical analysis or numerical analysis can facilitate optimal design for the sensor performance by effectively and quickly predicting the measurement range and the sensitivity with the changes of design and process variables. In this study, analysis models of the LVDT were proposed through theoretical analysis and the finite element method (FEM), and the effects of design and process variables on the sensitivity and linear region of the LVDT according to the core motion were analyzed by the proposed models. The theoretical model for the relation between the output voltage and the change in core position, including the position before entering and after passing the secondary coil, was developed by deriving the change in the mutual inductance of the primary and secondary coils. Meanwhile, the core, coil, magnetic shell, electric circuit, and core movement of the LVDT were constructed as a three-dimensional model for the FEM to obtain the voltage output using a commercial analysis program. The results of the LVDT output characteristics analyzed by the theoretical and the finite element models were mutually verified. By the verified models, a series of the analyses of the LVDT were performed with changes in the supply voltage, core size, number of primary and secondary turns, distance between coils, coil length, initial core position, and permeabilities of core and magnetic shell. The effects of those variables on the sensitivity and linear region of the LVDT could then be revealed.

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Development of LVDT (Linear Variable Differential Transformer) sensor as land displacement sensor

Cited by 6 publications

References 1 publication

Procedure for Determining the Upper Bound on Absolute Error for LVDT Sensors

Procedure for Determining the Upper Bound on Absolute Error for LVDT Sensors

Simulasi Monitoring Pergeseran Tanah Menggunakan Sensor LVDT (Linear Variable Differential Transformer)

The Modelling and Design of a Linear Variable Differential Transformer

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