scholarly journals Novel Absolute Rotary Position Sensor Based on Combination of Gray Scale Pattern Disc

2021 ◽  
Author(s):  
Ji Myong Choe ◽  
Nam Chol Yu ◽  
Nam Jin Ri ◽  
Mu Song An ◽  
Un Chol Kim
Keyword(s):  
New Technologies ◽  
Low Cost ◽  
Rapid Development ◽  
Angular Position ◽  
Gray Code ◽  
Measurement Range ◽  
Experimental Results ◽  
Position Sensor ◽  
Gray Scale ◽  
Measurement And Control

Abstract Absolute rotary angular /position sensors play an important role in various applications and rapid development of new technologies requires further accurate measurement and control. In this paper, a novel, very simple, low-cost and high accurate absolute rotary angular/ position sensor is presented. The sensor operation is based on the combination of circular gradient gray scale and gray code pattern. A simple experiment is done in order to demonstrate proof of concept of proposed sensor. The experimental results show that the proposed absolute rotary angular/position sensor has excellent linear characteristics with accuracy below ±1° and resolution of 0.1° within the full measurement range from 0° to 360°. The proposed idea and experimental results can be helpful to design absolute rotary angular/position sensor to improve performance of it.

Use of Low Cost, Low Fidelity Mockups for Preproduction Testing

1983 ◽  
Vol 27 (7) ◽  
pp. 589-591
Author(s):  
Carole A. Bohn
Keyword(s):  
New Technologies ◽  
Low Cost ◽  
Rapid Development ◽  
Test Methods ◽  
Current Approach ◽  
Operating Modes ◽  
Test And Evaluation ◽  
Methods Development ◽  
Display Technology ◽  
And Control

The new technologies proposed and/or retrofitted into Navy crewstations have demonstrated increasing sophistication and flexibility. Additionally, the crewstation technologies have shown very rapid development cycles. The current approach of reliance solely on flight testing has proven inadequate because of the multitude of equipment operating modes, lack of experimental control of situational variables, possible location/placement of components, variety of operational environments, dynamic crew tasking, and control/display technology unique characteristics. Test methods and relevent criteria are lacking. A quick fix is the use of low fidelity mockups for rapid testing and methods development. Such an approach can be both effective with respect to test dollars and responsive to the dynamics of the control/display development cycle. The present paper discusses the use of the low fidelity simulation in two specific developments. The first example presents the design of formats for a universal control/display layout to be used as a replacement for conventional pushbutton technology. The second example presents testing designed to determine the amount and type of control/display required for a crewstation functional upgrade. Both examples are from the test and evaluation work being performed on Navy patrol aircraft. Finally, a laboratory will be described which is being developed to permit this approach to testing.

scholarly journals High-Efficiency Wavelet Compressive Fusion for Improving MEMS Array Performance

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1662 ◽  
Author(s):  
Siyuan Liang ◽  
Weilong Zhu ◽  
Feng Zhao ◽  
Congyi Wang
Keyword(s):  
Real Time ◽  
High Efficiency ◽  
Microelectromechanical Systems ◽  
Inertial Sensor ◽  
Low Cost ◽  
Rapid Development ◽  
Experimental Results ◽  
Zero Bias ◽  
Real Time Processing ◽  
Application Range

With the rapid development of microelectromechanical systems (MEMS) technology, low-cost MEMS inertial devices have been widely used for inertial navigation. However, their application range is greatly limited in some fields with high precision requirements because of their low precision and high noise. In this paper, to improve the performance of MEMS inertial devices, we propose a highly efficient optimal estimation algorithm for MEMS arrays based on wavelet compressive fusion (WCF). First, the algorithm uses the compression property of the multiscale wavelet transform to compress the original signal, fusing the compressive data based on the support. Second, threshold processing is performed on the fused wavelet coefficients. The simulation result demonstrates that the proposed algorithm performs well on the output of the inertial sensor array. Then, a ten-gyro array system is designed for collecting practical data, and the frequency of the embedded processor in our verification environment is 800 MHz. The experimental results show that, under the normal working conditions of the MEMS array system, the 100 ms input array data require an approximately 75 ms processing delay when employing the WCF algorithm to support real-time processing. Additionally, the zero-bias instability, angle random walk, and rate slope of the gyroscope are improved by 8.0, 8.0, and 9.5 dB, respectively, as compared with the original device. The experimental results demonstrate that the WCF algorithm has outstanding real-time performance and can effectively improve the accuracy of low-cost MEMS inertial devices.

Communications in Process Control (Part 1)

1982 ◽  
Vol 15 (11) ◽  
pp. 427-432
Author(s):  
P. R. Matthews
Keyword(s):  
Process Control ◽  
Low Cost ◽  
Rapid Development ◽  
Transmission Efficiency ◽  
New Techniques ◽  
Communication Techniques ◽  
Arduous Task ◽  
And Control ◽  
Measurement And Control ◽  
Effective Transmission

The last decade has seen many new measurement and control techniques developed. This has been principally due to the development of low cost electronic circuits and, more recently, the microprocessor. As a result of this rapid development the instrument and process control engineer is faced with the arduous task of interfacing new and old equipment with differing transmission and communication requirements. The situation is further complicated by the numerous transmission and communication techniques that are available and the usual dogma of finding differing communication interfaces at either end of the connecting cable. This paper provides an insight to the array of transmission and communication techniques currently in use and looks at new techniques which are being developed. The application of the transmission and communication techniques to process control systems is a subject which is now under careful scrutiny as the establishment of an effective transmission and communication configuration can result in an appreciable cost advantage and increased transmission efficiency. A number of these configurations (networks) are discussed.

scholarly journals Modeling and Solution Algorithm for Optimization Integration of Express Terminal Nodes With a Joint Distribution Mode

2021 ◽  
Vol 33 (4) ◽  
pp. 142-166
Author(s):  
Fanchao Meng ◽  
Qingran Ji ◽  
Hongzhen Zheng ◽  
Huihui Wang ◽  
Dianhui Chu
Keyword(s):  
Joint Distribution ◽  
Simulated Annealing Algorithm ◽  
Low Cost ◽  
Rapid Development ◽  
Experimental Results ◽  
Neighborhood Search ◽  
Timely Manner ◽  
Integration Model ◽  
Distribution Mode ◽  
Annealing Algorithm

The rapid development of e-commerce has led to increased pressure on the express delivery industry to transport products to customers in a timely manner. The problem of how to deliver an increasing volume of express orders to customer clusters in a timely manner and at low cost with the joint distribution mode is becoming urgent. In this study, an express terminal node optimization and integration model is presented with an option to detach single customer clusters. In addition, the simulated annealing algorithm (SAA) based on neighborhood search that includes four rules is proposed to solve the problem. Contrast experiments are performed with SAA, the immune genetic algorithm (IGA), and the CPLEX solver. The experimental results indicate that IGA is less effective than SAA, and the running time of the IGA is longer. The CPLEX solver is less effective than the SAA, too. Additionally, the experimental results also show that every neighborhood rule proposed in this study plays a role in the optimization process.

scholarly journals PENGARUH PENAMBAHAN NIKEL TERHADAP KEKUATAN TARIK DAN KEKERASAN PADA BESI TUANG NODULAR 50

2017 ◽  
Vol 8 (2) ◽  
pp. 41
Author(s):  
Sudarmanto Sudarmanto
Keyword(s):  
Cast Iron ◽  
New Technologies ◽  
Low Cost ◽  
Nodular Cast Iron ◽  
Experimental Results ◽  
Base Metals ◽  
Spherical Structure ◽  
Properties Of Materials ◽  
Nodular Graphite

Nodular cast iron is the cast iron that has nodular graphite spherical structure distributed in ferrite or pearlite matrix or in both of them. Recently, this material is used widely in industries because its low cost and better performance. The advanced metal industries nowadays have found some new technologies in order to improve the properties of materials. One of them is the addition of another elements into the base metals, such as nickel. The effects of the addition 1wt %, 2wt % and 3wt % nickel into nodular cast iron 50 on tensile and hardness properties were investigated in this study. The experimental results show that the best amount of nickel that added into nodular cast iron is 3% wt, which has the best tensile and hardness properties

scholarly journals Colored 3D Path Extraction Based on Depth-RGB Sensor for Welding Robot Trajectory Generation

Automation ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 252-265
Author(s):  
Alfonso Gómez-Espinosa ◽  
Jesús B. Rodríguez-Suárez ◽  
Enrique Cuan-Urquizo ◽  
Jesús Arturo Escobedo Cabello ◽  
Rick L. Swenson
Keyword(s):  
New Technologies ◽  
Low Cost ◽  
Rapid Development ◽  
Color Space ◽  
Three Dimensional ◽  
3D Models ◽  
Butt Joint ◽  
Industrial Robots ◽  
Robot Trajectory ◽  
Path Extraction

The necessity for intelligent welding robots that meet the demand in real industrial production, according to the objectives of Industry 4.0, has been supported owing to the rapid development of computer vision and the use of new technologies. To improve the efficiency in weld location for industrial robots, this work focuses on trajectory extraction based on color features identification on three-dimensional surfaces acquired with a depth-RGB sensor. The system is planned to be used with a low-cost Intel RealSense D435 sensor for the reconstruction of 3D models based on stereo vision and the built-in color sensor to quickly identify the objective trajectory, since the parts to be welded are previously marked with different colors, indicating the locations of the welding trajectories to be followed. This work focuses on 3D color segmentation with which the points of the target trajectory are segmented by color thresholds in HSV color space and a spline cubic interpolation algorithm is implemented to obtain a smooth trajectory. Experimental results have shown that the RMSE error for V-type butt joint path extraction was under 1.1 mm and below 0.6 mm for a straight butt joint; in addition, the system seems to be suitable for welding beads of various shapes.

An accurate low-cost capacitive absolute angular-position sensor with a full-circle range

1996 ◽  
Vol 45 (2) ◽  
pp. 516-520 ◽  
Author(s):  
Xiujun Li ◽  
G.C.M. Meijer ◽  
G.W. de Jong ◽  
J.W. Spronck
Keyword(s):  
Low Cost ◽  
Angular Position ◽  
Position Sensor ◽  
Full Circle

scholarly journals Old knowledge and new technologies allow rapid development of model organisms

2016 ◽  
Vol 27 (6) ◽  
pp. 882-887 ◽  
Author(s):  
Charles E. Cook ◽  
Janet Chenevert ◽  
Tomas A. Larsson ◽  
Detlev Arendt ◽  
Evelyn Houliston ◽  
...  
Keyword(s):  
Cell Biology ◽  
High Throughput Sequencing ◽  
Biological Diversity ◽  
New Technologies ◽  
Low Cost ◽  
Rapid Development ◽  
Experimental Models ◽  
Model Organisms ◽  
Model Species ◽  
Cellular Mechanisms

Until recently the set of “model” species used commonly for cell biology was limited to a small number of well-understood organisms, and developing a new model was prohibitively expensive or time-consuming. With the current rapid advances in technology, in particular low-cost high-throughput sequencing, it is now possible to develop molecular resources fairly rapidly. Wider sampling of biological diversity can only accelerate progress in addressing cellular mechanisms and shed light on how they are adapted to varied physiological contexts. Here we illustrate how historical knowledge and new technologies can reveal the potential of nonconventional organisms, and we suggest guidelines for selecting new experimental models. We also present examples of nonstandard marine metazoan model species that have made important contributions to our understanding of biological processes.

Optimization and Modeling of Ink-Jet Printed Flexible Position Sensor

2013 ◽  
Vol 543 ◽  
pp. 306-309 ◽  
Author(s):  
Nataša Samardžić ◽  
Nikola Jeranče ◽  
Goran Stojanović
Keyword(s):  
Low Cost ◽  
Flexible Substrate ◽  
Angular Position ◽  
Substrate Thickness ◽  
Position Sensor ◽  
Technological Parameters ◽  
Design And Optimization ◽  
Sensor Structure ◽  
Ink Jet ◽  
Substrate Influence

This paper presents how geometrical and technological parameters of inductive angular position sensor, fabricated on flexible substrate, influence its characteristics. In our earlier work, the angular position sensor has been already presented but for 60° stroke. In presented work, the design and optimization have been performed for 90° stroke, which is extensively used, for example, in automotive applications. For three different designs of meander rolled coils, width of segments, substrate thickness and relative distance between outer and inner coils have been changed in order to find optimal sensor structure. The proposed sensor is low-cost, easily fabricated and its parameters can be adapted for different angular strokes and applications.

scholarly journals Sensors Driven AI-Based Agriculture Recommendation Model for Assessing Land Suitability

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3667 ◽  
Author(s):  
Durai Raj Vincent ◽  
N Deepa ◽  
Dhivya Elavarasan ◽  
Kathiravan Srinivasan ◽  
Sajjad Hussain Chauhdary ◽  
...  
Keyword(s):  
Sensor Networks ◽  
New Technologies ◽  
Low Cost ◽  
Rapid Development ◽  
Land Suitability ◽  
World Population ◽  
Agriculture Land ◽  
Suitability Assessment ◽  
Food And Agriculture ◽  
Sensor Devices

The world population is expected to grow by another two billion in 2050, according to the survey taken by the Food and Agriculture Organization, while the arable area is likely to grow only by 5%. Therefore, smart and efficient farming techniques are necessary to improve agriculture productivity. Agriculture land suitability assessment is one of the essential tools for agriculture development. Several new technologies and innovations are being implemented in agriculture as an alternative to collect and process farm information. The rapid development of wireless sensor networks has triggered the design of low-cost and small sensor devices with the Internet of Things (IoT) empowered as a feasible tool for automating and decision-making in the domain of agriculture. This research proposes an expert system by integrating sensor networks with Artificial Intelligence systems such as neural networks and Multi-Layer Perceptron (MLP) for the assessment of agriculture land suitability. This proposed system will help the farmers to assess the agriculture land for cultivation in terms of four decision classes, namely more suitable, suitable, moderately suitable, and unsuitable. This assessment is determined based on the input collected from the various sensor devices, which are used for training the system. The results obtained using MLP with four hidden layers is found to be effective for the multiclass classification system when compared to the other existing model. This trained model will be used for evaluating future assessments and classifying the land after every cultivation.

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