An absolute rotary position sensor based on cylindrical coordinate color space transformation

Bajić, Jovan S.; Stupar, Dragan Z.; Dakic, Bojan; Živanov, M.; Nagy, Laszlo

doi:10.1016/j.sna.2014.03.036

Cited by 55 publications

(19 citation statements)

References 23 publications

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“…A hidden layer consists of radial functions, and an output layer performs a weighted sum of the output from the hidden layer. The output of the hidden layer has the form shown in equation (12).…”

Section: Adjds311mentioning

confidence: 99%

Classification of artificial light sources and estimation of Color Rendering Index using RGB sensors, K Nearest Neighbor and Radial Basis Function

2015

International Journal on Smart Sensing and Intelligent Systems

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Section: Adjds311mentioning

confidence: 99%

Classification of artificial light sources and estimation of Color Rendering Index using RGB sensors, K Nearest Neighbor and Radial Basis Function

2015

International Journal on Smart Sensing and Intelligent Systems

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“…In Reference [ 16 ] the term of a visual encoder is presented, where authors describe the idea of robustly and precisely measuring the rotation angle of an object by tracking an RGB color pattern aligned on the rotor and tracked via high-speed RGB vision system. Similarly, the authors of Reference [ 17 ] employ different color gradients to determine the rotational angle. The authors of Reference [ 18 ] present the solution for data processing to improve on capture image contrast and thus improve both the low light and the high-speed performance.…”

Section: Introductionmentioning

confidence: 99%

Fast and Reliable Alternative to Encoder-Based Measurements of Multiple 2-DOF Rotary-Linear Transformable Objects Using a Network of Image Sensors with Application to Table Football

Bošnak

Klančar

2020

Sensors

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Simultaneous determination of linear and angular positions of rotating objects is a challenging task for traditional sensor applications and a very limited set of solutions is available. The paper presents a novel approach of replacing a set of traditional linear and rotational sensors by a small set of image sensors. While the camera’s angle of view can be a limiting factor in the tracking of multiple objects, the presented approach allows for a network of image sensors to extend the covered area. Furthermore, rich image data allows for the application of different data processing algorithms to effectively and accurately determine the object’s position. The proposed solution thus provides a set of smart visual encoders emulated by an image sensor or a network of image sensors for more demanding spatially distributed tasks. As a proof of concept, we present the results of the experiment in the target application, where a 1.6 MP image sensor was used to obtain sub-degree angular resolution at 600 rpm and thus exceeding the design parameters and requirements. The solution allows for a compact, cost-effective, and robust integration into the final product.

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“…In an optical rotary encoder, the optical pattern received by photo sensors is modulated by a rotary disc [8]. Low-cost optical rotary encoders used an optical mouse sensor to identify binary codes printed on a rotary disc [9] or three optical sensors to measure the intensity change on a grayscale wheel [10]. A magnetic rotary encoder employs a Hall effect sensor or magneto resistive (MR) elements to measure the change of the magnetic field generated by a rotary disc with alternate poles [8].…”

Section: Introductionmentioning

confidence: 99%

Development of a Mesoscale Fiberoptic Rotation Sensor for a Torsion Actuator

Sheng

Desai

2018

IEEE Robot. Autom. Lett.

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This paper presents the development of a meso-scale fiberoptic rotation sensor for a shape memory alloy (SMA) torsion actuator for neurosurgical applications. Within the sensor, a rotary head with a reflecting surface is capable of modulating the light intensity collected by optical fibers when the rotary head is coupled to the torsion actuator. The mechanism of light intensity modulation is modeled, followed by experimental model verification. Meanwhile, working performances for different rotary head designs, optical fibers, and fabrication materials are compared. After the calibration of the fiberoptic rotation sensor, the sensor is capable of precisely measuring rotary motion and controlling the SMA torsion actuator with feedback control.

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An absolute rotary position sensor based on cylindrical coordinate color space transformation

Cited by 55 publications

References 23 publications

Classification of artificial light sources and estimation of Color Rendering Index using RGB sensors, K Nearest Neighbor and Radial Basis Function

Classification of artificial light sources and estimation of Color Rendering Index using RGB sensors, K Nearest Neighbor and Radial Basis Function

Fast and Reliable Alternative to Encoder-Based Measurements of Multiple 2-DOF Rotary-Linear Transformable Objects Using a Network of Image Sensors with Application to Table Football

Development of a Mesoscale Fiberoptic Rotation Sensor for a Torsion Actuator

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