An FPGA-based integrated signal conditioner for measurement of position, velocity and acceleration of a rotating shaft using an incremental encoder

Banerjee, Kalyan K.; Dam, Bivas; Majumdar, Kalyan

doi:10.1109/cmi.2016.7413786

Cited by 12 publications

(9 citation statements)

References 9 publications

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“…The usefulness of these various techniques is determined mostly by the accuracy adjusted to the investigated physical phenomena and by the technical potential for adapting the measurement system to the conditions of a particular experiment (laboratory and in-service tests). The photoelectric incremental encoders [ 3 ] used in the preliminary research, along with self-calibratable encoders [ 4 ] or easily miniaturizable optical encoders [ 5 ], belong to a popular group of sensors allowing belt speed to be continuously recorded with the use of the contact method. They are successfully employed in monitoring the operation of, e.g., belt transmission systems [ 6 ] or evaluating in small-scale the slippage and transverse vibration in belt drives [ 7 , 8 ].…”

Section: Methodsmentioning

confidence: 99%

Tests of Belt Linear Speed for Identification of Frictional Contact Phenomena

Bortnowski

Gładysiewicz

Król

et al. 2020

Sensors

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In the locations where driving forces are transmitted, the changing tensile forces cause rapid elastic deformations of the belt. The deformation changes the belt speed. Measurement of the belt speed on the friction contact sections is essential to identify elastic slippage. However, the scale of the phenomenon is small, so it is necessary to use precise measuring equipment. The article presents measurements of the linear belt speed with the use of various sensors and measuring devices. A measurement error was determined for each of the presented measurement methods. The method with the highest accuracy was used to identify the elastic slippage on the drive pulley.

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Section: Methodsmentioning

confidence: 99%

Tests of Belt Linear Speed for Identification of Frictional Contact Phenomena

Bortnowski

Gładysiewicz

Król

et al. 2020

Sensors

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“…Over the years, a series of studies have achieved encouraging results with the development of belt conveyor systems. For example, Krey et al [6] proposed the variable reluctance speed sensor method, which has high availability and rigorous measurement speed reliability; Kokuyama et al [7] proposed the self-calibrating rotary encoder system, which can achieve high reliability and repeatability of measurement; Liu et al [8] proposed the incremental optical encoder, which has high precision and easy to miniaturize based on alternate M / T method and incremental optical encoder; a method of the incremental photoelectric encoder has been put forward by the Jadavpur university [9], which has excellent measurement performance of stability and real-time. These traditional contact measurement methods have excellent performance and can meet many measurement requirements about engineering applications.…”

Section: A Traditional Contact Measurement Methodsmentioning

confidence: 99%

A Contactless Measuring Speed System of Belt Conveyor Based on Optical Flow Techniques

et al. 2019

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In mining operation, measuring the speed of a belt conveyor is important for safe and efficient production. The contact measurement system is the mainstream choice for existing measuring speed systems, but the contact method cannot avoid some potential problems and hidden dangers in the running process of belt conveyor. A novel contactless measurement system based on optical flow techniques is designed in this study, which can calculate running speed of belt conveyor in real time. During the operation of belt conveyor, it can be found that most regions of the images are similar when the camera is set to highspeed continuous shooting mode. These similar image regions have a certain displacement change in the moving direction of the belt conveyor due to the time difference of its shooting, and can be described in a simplified way which is the image feature keypoint. The machine vision algorithm extracts image feature keypoints and acquires the optical flow information of image feature keypoints. Motion displacement information including the displacement change can be extracted by analyzing of optical flow information about captured images to calculate the running speed. The contactless measuring speed system is verified by experiments. Experimental results show that the measuring accuracy can be presented by indicators with RMSE of 0.042 m/s and MAE of 0.029 m/s.

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“…Con base en esta información se pueden obtener datos como la posición, velocidad y aceleración del sistema que son fundamentales para para el desarrollo de sistemas de control [1], [2]. Estos aspectos son importantes en campos como la robótica, en donde esta información es necesaria para determinar la posición de un robot móvil o la posición de las articulaciones de un manipulador, entre otras [4], [5].…”

Section: Introductionunclassified

“…En [1], se realiza una interfaz entre el decodificador y un procesador soft-core por medio de una UART. En [4]- [6] y [9], los autores implementan un algoritmo para la medición de velocidad y aceleración de un motor a través de encoders. En [2], Gorbounov realiza la implementación de un circuito decodificador de encoders de cuadratura que elimina los errores presentes en los cambios de dirección de rotación en el eje del motor.…”

Section: Introductionunclassified

Modulo IP basado en FPGA para la decodificación de encoders de cuadratura

Suárez-Gómez

Peréz-Holguín

2020

Rev. politec.

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Los encoders de cuadratura son los sensores más ampliamente utilizados para medir la posición, velocidad y aceleración de motores. Para su correcto funcionamiento se requiere la implementación de circuitos de decodificación basados en el conteo de pulsos y la determinación de la dirección de rotación, que consideren el uso eficiente de recursos y la eliminación de errores. Dichos circuitos se implementan usualmente en microcontroladores; sin embargo, las FPGAs tienen características que las hacen ideales para este tipo de aplicaciones. En este trabajo se presenta un módulo IP para el acondicionamiento de cuatro encoders de cuadratura, que genera valores de conteo para cada encoder en una base de tiempo que puede ser determinada interna o externamente y elimina los errores que se presentan en los cambios de dirección de rotación. Se presentan los resultados de simulación de la descripción de hardware y su implementación en un robot móvil basado en FPGA.

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An FPGA-based integrated signal conditioner for measurement of position, velocity and acceleration of a rotating shaft using an incremental encoder

Cited by 12 publications

References 9 publications

Tests of Belt Linear Speed for Identification of Frictional Contact Phenomena

Tests of Belt Linear Speed for Identification of Frictional Contact Phenomena

A Contactless Measuring Speed System of Belt Conveyor Based on Optical Flow Techniques

Modulo IP basado en FPGA para la decodificación de encoders de cuadratura

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