Log in

Relevant bibliographies by topics / Improvement of accuracy / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Improvement of accuracy.

Dissertations / Theses on the topic 'Improvement of accuracy'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Improvement of accuracy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Han, Zhao. "Accuracy improvement of stereolithography." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486424.

Full text

Abstract:

The basic layer-based manufacturing mechanism of stereolithography is built upon a scanning pattern for the entire cross section for each layer. The purpose of this research is to investigate experimentally and theoretically the effects of a new scanning pattern with the aim of improving the dimensional and geometrical performance of Stereolithography against a benchmarked industry standard scanning pattern. The development of the new Bisector scanning patterns is based on the hypothesis that a contour-oriented scanning sequence with more built-in relaxation could provide a more uniform distri

APA, Harvard, Vancouver, ISO, and other styles

2

Saravi, Mohammad Ebrahimzadeh. "Improving cost estimation accuracy through quality improvement techniques." Thesis, University of Bath, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520948.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Johnsrud, Vegard. "Improvement of the Positioning Accuracy of Industrial Robots." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produksjons- og kvalitetsteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26243.

Full text

Abstract:

Industriroboter er godt kjent for sin høye repeterbarhet, noe som reflekteres i deres hovedbruksområde i industrien, deriblant pick and place-operasjoner og punktsveising. Med det økende behovet for automatisering i industrien, representerer roboter en unik mulighet for nettopp dette uten å redusere fleksibiliteten. Som det imidlertid påpekes i denne masteroppgaven, ligger hovedutfordringen for industriroboter i å forbedre dårlig posisjoneringsnøyaktighet. For å løse denne utfordringen kan man endre på robotens mekaniske utform

APA, Harvard, Vancouver, ISO, and other styles

4

Gandhi, Anall Vijaykumar. "An Accuracy Improvement Method for Cricket Indoor Location System." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1369316496.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Yang, Po. "Accuracy improvement of RFID based 2D tracking and localisation." Thesis, Staffordshire University, 2011. http://eprints.staffs.ac.uk/1884/.

Full text

Abstract:

The purpose of localization and tracking technology in indoor application is to extract moving object parameters accurately and precisely. This thesis investigates the problem of how to utilize RFID technique for the accurate and precise extraction of indoor 2D moving object position parameters. Firstly, a framework named RFID-Loc with three modules: RFID-Loc Infrastructure, RFID-Loc Data Filter and RFID-Loc Localisation Algorithm, is established from a theoretical perspective. This framework can guide the research and design of methods used in an RFID based object localisation system with enh

APA, Harvard, Vancouver, ISO, and other styles

6

Ahmad, Ali Mohsin. "Digital terrain models in engineering : assessment and improvement of accuracy." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278756.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Lee, Jaehong. "Improvement of Experimental Data Accuracy for Neutron Capture Cross Section." Kyoto University, 2018. http://hdl.handle.net/2433/232482.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Zhao, Qiuying. "Towards Improvement of Numerical Accuracy for Unstructured Grid Flow Solver." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1353107603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Borm, Jin-Hwan. "Improvement and characterization of robot positioning accuracy for off-line programming /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487596307357735.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Eriksson, Peter. "Milling accuracy improvement of a 6-axis industrial robot through dynamic analysis : From datasheet to improvement suggestions." Thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-250244.

Full text

Abstract:

The industrial robot is a flexible and cheap standard component that can becombined with a milling head to complete low accuracy milling tasks. Thefuture goal for researchers and industry is to increase the milling accuracy, suchthat it can be introduced to more high value added operations.The serial build up of an industrial robot bring non-linear compliance andchallenges in vibration mitigation due to the member and reducer design. WithAdditive Manufacturing (AM), the traditional cast aluminum structure couldbe revised and, therefore, milling accuracy gain could be made possible due tostruct

APA, Harvard, Vancouver, ISO, and other styles

11

Bian, Chao. "Improvement of RFID tracking accuracy for a personnel tracking system in healthcare." The American Society of Mechanical Engineers, 2013. http://hdl.handle.net/1993/24053.

Full text

Abstract:

Radio Frequency Identification (RFID) technology has been widely adopted by different industries for various purposes. While implementing a RFID system for personnel tracking in an industrial environment, such as a hospital, the tracking accuracy is not always satisfactory due to incorrect placement of RFID hardware, coarse system configuration or environment. This thesis proposes comprehensive optimization methods for improving the tracking accuracy of a RFID system for personnel tracking. The improvement is achieved from four perspectives including RFID data cleaning, experimental design, da

APA, Harvard, Vancouver, ISO, and other styles

12

Do, Changhee. "Improvement in accuracy using records lacking sire information in the animal model." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/39430.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Lin, Shuding. "A Study on Measurement and Improvement of the Contouring Accuracy of NC Machine Tools." Kyoto University, 1999. http://hdl.handle.net/2433/181319.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Khurshid, Zain [Verfasser]. "Improvement in the accuracy of PET Signals by Analysis of Textural heterogeneity parameters / Zain Khurshid." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1170872417/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Kraljevic, Matija. "Character recognition in natural images : Testing the accuracy of OCR and potential improvement by image segmentation." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187991.

Full text

Abstract:

In recent years, reading text from natural images has gained renewed research attention. One of the main reasons for this is the rapid growth of camera-based applications on smart phones and other portable devices. With the increasing availability of high performance, low-priced, image-capturing devices, the application of scene text recognition is rapidly expanding and becoming increasingly popular. Despite many efforts, character recognition in natural images, is still considered a challenging and unresolved problem. The difficulties stem from the fact that natural images suffer from a wide

APA, Harvard, Vancouver, ISO, and other styles

16

Ishitsuka, Kazuya. "Synthetic Aperture Radar Interferometry Time-series for Surface Displacement Monitoring: Data interpretation and improvement in accuracy." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199261.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Dewei. "Uncertainty Quantification and Accuracy Improvement of the Double-Sensor Conductivity Probe for Two-Phase Flow Measurement." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/103074.

Full text

Abstract:

The double-sensor conductivity probe is one of the most commonly used techniques for obtaining local time-averaged parameters in two-phase flows. The uncertainty of this measurement technique has not been well understood in the past as it involves many different steps and influential factors in a typical measurement. This dissertation aims to address this gap by performing a systematic and comprehensive study on the measurement uncertainty of the probe. Three types of uncertainties are analyzed: that of measurands, of the model input parameters, and of the mathematical models. A Monte Carlo

APA, Harvard, Vancouver, ISO, and other styles

18

Li, Gong. "Improvement of Wind Forecasting Accuracy and its Impacts on Bidding Strategy Optimization for Wind Generation Companies." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26815.

Full text

Abstract:

One major issue of wind generation is its intermittence and uncertainty due to the highly volatile nature of wind resource, and it affects both the economy and the operation of the wind farms and the distribution networks. It is thus urgently needed to develop modeling methods for accurate and reliable forecasts on wind power generation. Meanwhile, along with the ongoing electricity market deregulation and liberalization, wind energy is expected to be directly auctioned in the wholesale market. This brings the wind generation companies another issue of particular importance, i.e., how to maxim

APA, Harvard, Vancouver, ISO, and other styles

19

Henrico, Ivan. "Geometric accuracy improvement of VHR satellite imagery during orthorectification with the use of ground control points." Thesis, University of Pretoria, 2016. http://hdl.handle.net/2263/60812.

Full text

Abstract:

Conducting single frame orthorectification on satellite images to create an ortho-image requires four basic components, namely an image, a geometric sensor model, elevation data (for example a digital elevation model (DEM)) and ground control points (GCPs). For this study, orthorectification was executed numerous times (in three stages) and each time components were altered to test the geometric accuracy of the resulting ortho-image. Most notably, the distribution and number of ground control points, the quality of the elevation source and the geometric sensor model or lack thereof were altere

APA, Harvard, Vancouver, ISO, and other styles

20

Yan, Rong Shen. "Circuit techniques for CMOS amplifier accuracy and robustness improvement in high-side current sensing Read-out circuit." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3691122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Dorica, Mark. "Novel mesh quality improvement systems for enhanced accuracy and efficiency of adaptive finite element electromagnetics with tetrahedra." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80008.

Full text

Abstract:

Finite element accuracy and efficiency can be directly affected by mesh quality. When employing h-adaptive solution strategies, a mesh improvement stage is required in order to ensure high quality tetrahedra. However, mesh improvement techniques and quality indicators are often based on purely geometrical considerations. Recent work has focused on theoretically linking mesh quality criteria to interpolation and discretization errors. The potential benefits and related costs of a family of new mesh quality improvement systems are investigated using a set of electromagnetic benchmarks and

APA, Harvard, Vancouver, ISO, and other styles

22

Yang, Hao-Wei, and 楊皓偉. "The Application of High Accuracy Sensors on Precision Machine Tool Accuracy Improvement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/37561462382915513474.

Full text

Abstract:

碩士<br>國立臺灣大學<br>機械工程學研究所<br>103<br>This research develop high accuracy multiple degrees of freedom sensors, including high resolution laser straightness measurement system and autocollimator. The sensors can detect straightness, pitch, yaw, and roll errors of the linear guideways and linear stage. By using laser expander and drift compensated system, the laser drift caused by the temperature and pressure can be reduced. The application of the digital filter can decrease the noise of the signal and improve the stability of the systems. According to the Abbe principle, the angular errors will be

APA, Harvard, Vancouver, ISO, and other styles

23

Wang, Han-Sen, and 王瀚森. "Improvement of visual odometry accuracy and instantaneity." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/38963526409935671706.

Full text

Abstract:

碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>102<br>The purpose of this thesis is to improve the accuracy and instantaneity of the binocular-camera-based visual odometry (VO). The speeded-up robust features (SURF) algorithm was used to capture environment landmarks, and the perspective-3-point(P3P) algorithm and random sample consensus (RANSAC) method were used to the robot localization. The Upright-SURF, threshold of box filter, novel parametrizated P3P algorithm and randomized random sample consensus (R-RANSAC) algorithm were used to reduce computing time of the VO. The revised SURF can increase the freque

APA, Harvard, Vancouver, ISO, and other styles

24

Hsu, Jih-Sheng, and 許日昇. "Improvement in DGPS Accuracy Using Recurrent S_CMAC_GBF." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/37396085114300218770.

Full text

Abstract:

碩士<br>清雲科技大學<br>電機工程系所<br>97<br>This study is to design the structure of Recurrent S_CMAC_GBF use for improve in DGPS (Differential-Global Positioning System) accuracy, and to implement and test the hardware structure by using FPGA chip. This paper present the Recurrent S_CMAC_GBF in DGPS to increase for accurate positioning. We used a low cost commercial module (Trimble Lassen) to improvement the DGPS system and used the expensive commercial module (Trimble 5700) receiver to further. The proposed project is collects erroneous information and use Recurrent S_CMAC_GBF to predicted future errone

APA, Harvard, Vancouver, ISO, and other styles

25

Lin, Chung-Jie, and 林中傑. "GPS Positioning Accuracy Improvement by Fuzzy Methods." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/04864117154083500771.

Full text

Abstract:

碩士<br>國立臺灣大學<br>電機工程學系<br>85<br>GPS接收機的定位精確度對於使用者而言是很重要的，特別是使用C/A 碼的單一接收機。在本論文中，將提出應用模糊理論於全球定位系統以改善定位精確度的方法。針對衛星幾何分佈所造成的精確釋度(Dilution of Precision, DOP)及接收機通道之訊號雜訊比(Signal- Noise Ratio, SNR)對於定位誤差所造成的影響，於文中將有詳細的探討。然而，PDOP和SNR之間的關係會彼此矛盾，且具有一定的模糊性，這也就是為什麼引用模糊方法的原因。實驗的方法大致為，利用定位資料的 PDOP值、SNR值作為模糊處理單元( Fuzzy Processing Unit )的輸入，用以推論計算該筆定位資料的信賴度因子 (Reliable Factor)。再者，將此信賴度因子和一預先設定的臨界值比較，若信賴度因子大於該值，則選用此定位資料。經由此方法，而可以從原始資料中，篩選出較

APA, Harvard, Vancouver, ISO, and other styles

26

Lin, Ting-Huei, and 林庭輝. "FEM Accuracy Improvement and Waveguide Transition Design." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/51761799883584250523.

Full text

Abstract:

博士<br>國立臺灣大學<br>電機工程學研究所<br>89<br>To improve the accuracy of FEM for waveguide discontinuity problems and waveguide transition design are investigated in this dissertation. The FEM method hybridizing modal expansion technique is employed to solve metallic waveguide discontinuity problems. The FEM was formulated in terms of electric or magnetic fields, called E- or H- formulations. By averaging the results obtained from E- and H-formulations with the same meshes, the accuracy improvement in the solution is analyzed. In the study, the E- and H-formulations for FEM are derived and thei

APA, Harvard, Vancouver, ISO, and other styles

27

Lanza, Michele. "Improvement methods for diagnostic accuracy in ophthalmology." Rozprawa doktorska, 2018. https://repolis.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=47074.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Lanza, Michele. "Improvement methods for diagnostic accuracy in ophthalmology." Rozprawa doktorska, 2018. https://repolis.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=65610.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Lanza, Michele. "Improvement methods for diagnostic accuracy in ophthalmology." Rozprawa doktorska, 2018. https://delibra.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=47074.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Lanza, Michele. "Improvement methods for diagnostic accuracy in ophthalmology." Rozprawa doktorska, 2018. https://delibra.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=65610.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Tang, Y., Han Tong Loh, J. Y. H. Fuh, et al. "Accuracy Analysis and Improvement for Direct Laser Sintering." 2003. http://hdl.handle.net/1721.1/3898.

Full text

Abstract:

The accuracy issue of a rapid prototyping-direct laser sintering system is studied in this paper. The sources of errors are analyzed for their contribution to the final accuracy of built parts. The error sources are related to the hardware and software of the machine, the materials and the process. Special measures were exploited to improve the accuracy of the direct laser sintering system and process. For the errors caused by hardware like laser scanner, compensation by software was developed to correct the errors resulting from galvano-mirrors and F-Î¸ lens. A compensation function mode was

APA, Harvard, Vancouver, ISO, and other styles

32

Ho, Hui-Chun, and 何慧君. "Improvement of Indexing Accuracy forGloboidal Cam Indexing Mechanisms." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/49190156036820219977.

Full text

Abstract:

博士<br>國立中山大學<br>機械與機電工程學系研究所<br>91<br>Globoidal cam indexing mechanism (GCIM) plays an important role in automation and machining tools. With the compact structure, a GCIM is able to reach the required precision on account of high stiffness and minimized backlash. The requirement to improve the indexing accuracy for GCIMs from industry applications drives the research going on. In this dissertation, two strategies to improve the indexing accuracy of GCIMs are proposed. The first strategy is by considering the manufacturing parameters involved in the processes of machining and assembly. An

APA, Harvard, Vancouver, ISO, and other styles

33

Wu, Kuo-Hwa, and 吳國華. "GPS Accuracy Improvement with Satellite In-view VisualDetection." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/99500953279952419631.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>電子工程系<br>103<br>As GPS technology becomes more popular, its application becomes widely adapted in products across the market. GPS technology can be found in products such as automobile navigation systems, smart phones, wearable devices, and geographical surveying equipment. Among these, automobile navigation systems are the most widely known, with widespread commercial successes. As automobile navigation systems are primarily used in highly urbanized areas, high-rises will inevitably disrupt GPS signal acquisitions due to obstruction of satellites or will cause multipath effe

APA, Harvard, Vancouver, ISO, and other styles

34

Shih, Naishuo, and 石乃碩. "Accuracy Improvement of License Plate Tracking and Recognition." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/01475805313044474609.

Full text

Abstract:

碩士<br>大葉大學<br>資訊管理學系碩士班<br>100<br>As economic activity to flourish and traffic's complete, people have more car than before. Therefore, traffic management becomes more important. In before, traffic monitoring was using people watching video. It is very waste time and human. So our proposed a new approach to improve this status. Our tracking and recognition license plate using the sequential video images. First, our using background subtraction to detection foreground objects. Second, our using Sobel edge detection to finding foreground objects edge. Finally, using Hough transform to location

APA, Harvard, Vancouver, ISO, and other styles

35

WU, YI-TSENG, and 吳奕增. "Accuracy Evaluation and Improvement of a Delta Robot." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/5p85s6.

Full text

Abstract:

碩士<br>明志科技大學<br>機械工程系機械與機電工程碩士班<br>107<br>Compared with the serial robot, delta robot has higher moving speed and better positioning accuracy. That is why delta robot used for pick and place and 3D printing. Previous research about delta robot are formula derivation and software simulation. There is no measurement research. Therefore, this study is based on previous research and laboratory-made delta robot. Check the kinematics with MATLAB, control the DC motor with Arduino, and using measuring instrument to evaluated accuracy and find the factors affecting the accuracy are identified for

APA, Harvard, Vancouver, ISO, and other styles

36

Kuanr, Debesh, and Lokanath Tripathy. "Accuracy improvement in odia zip code recognition technique." Thesis, 2012. http://ethesis.nitrkl.ac.in/3302/1/Debeshk-ei016.pdf.

Full text

Abstract:

Odia is a very popular language in India which is used by more than 45 million people worldwide, especially in the eastern region of India. The proposed recognition schemes for foreign languages such as Roman, Japanese, Chinese and Arabic can’t be applied directly for odia language because of the different structure of odia script. Hence, this report deals with the recognition of odia numerals with taking care of the varying style of handwriting. The main purpose is to apply the recognition scheme for zip code extraction and number plate recognition. Here, two methods “gradient and curvature

APA, Harvard, Vancouver, ISO, and other styles

37

Chang, Chia-Hung, and 張嘉宏. "Accuracy Improvement for RNA Secondary Structure Prediction with SVM." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/gf7ax2.

Full text

Abstract:

碩士<br>國立中山大學<br>資訊工程學系研究所<br>96<br>Ribonucleic acid (RNA) sometimes occurs in a complex structure called pseudoknots. Prediction of RNA secondary structures has drawn much attention from both biologists and computer scientists. Consequently, many useful tools have been developed for RNA secondary structure prediction, with or without pseudoknots. These tools have their individual strength and weakness. As a result, we propose a hybrid feature extraction method which integrates two prediction tools pknotsRG and NUPACK with a support vector machine (SVM). We first extract some useful features fr

APA, Harvard, Vancouver, ISO, and other styles

38

"Accuracy improvement in XPS by low energy argon ion." 2004. http://library.cuhk.edu.hk/record=b5891899.

Full text

Abstract:

Tam Yi Mei.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.<br>Includes bibliographical references.<br>Abstracts in English and Chinese.<br>Abstract --- p.ii<br>摘要 --- p.iii<br>Acknowledgement --- p.iv<br>Table of Contents --- p.v<br>List of Figures --- p.ix<br>List of Tables --- p.xii<br>Chapter Chapter 1 --- Background of study --- p.1<br>Chapter 1.1 --- Introduction --- p.1<br>Chapter 1.2 --- Theoretical background of XPS --- p.2<br>Chapter 1.2.1 --- Principle of XPS --- p.2<br>Chapter 1.2.2 --- Surface sensitivity --- p.6<br>Chapter 1.2.3 --- Inelastic Mean Free Path

APA, Harvard, Vancouver, ISO, and other styles

39

HUANG, HSIU-LING, and 黃綉玲. "Accuracy Improvement of 5G Channel Measurements with Genetic Algorithms." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/v784fm.

Full text

Abstract:

碩士<br>國立中正大學<br>通訊工程研究所<br>105<br>The millimeter-wave frequency band has been considered as one of the key components for next generation (5G) mobile cellular communications. While these high frequency bands offer vast swaths of underutilized spectrum, the propagation channel characterization needs to be thoroughly scrutinized prior to system design at these bands. In this thesis, channel measurement is conducted by using an omni-directional antenna at transmitter and a directional horn antenna at receiver to help improve the range of measurements. With transmission of pseudo noise (PN) sequen

APA, Harvard, Vancouver, ISO, and other styles

40

Chiuo, Ming-Da, and 邱銘達. "Accuracy improvement on the directional buoy measuerment and analysis." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/81015167395554872251.

Full text

Abstract:

碩士<br>國立成功大學<br>水利及海洋工程學系<br>89<br>Data buoy, which features comparatively reliability and robustness, is the most frequent applied alternatives on the measurement of oceanographical data. The wave directional spectra can be obtained by analyzing the observed heave, pitch and roll motion of the buoy hull. The accurate determination of the directional spectra serves as a diagnostic tool for the quantification of key mechanisms governing the dynamics of ocean waves. The objective of present study is to improve the accuracy of directional spectra measurement and analysis. New algorithms are inten

APA, Harvard, Vancouver, ISO, and other styles

41

Yang, Chung Shun, and 楊中舜. "Kalman Filter for the Improvement of GPS Positioning Accuracy." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/75215051063814308180.

Full text

Abstract:

碩士<br>國立海洋大學<br>電機工程學系<br>85<br>Global Positioning System (GPS) has become the leader of modern electronic navigation systems due to its properties of high accuracy and multi-purpose.However, the GPS is also a physical system, so the positioning accuracy willdecrease because of the disturbance error source. From relevant literature, Kalman Filter, which is a multi-input/multi- outputsystem, can be successfully applied to GPS. Kalman Filter can not only computethe position and clock stateso

APA, Harvard, Vancouver, ISO, and other styles

42

Wang, Yang-Chang, and 王永川. "A study of accuracy improvement about carrier phase under DGPS." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/61223797902415950320.

Full text

Abstract:

碩士<br>國立海洋大學<br>航海技術學系<br>83<br>We edited programs to improve single position accuracy with carrier phase under DGPS. We use the skills of the kinematic survay to combined carrier phase and code to get a instantly accuracy position. Then use the 「 ambiguity function method 」 to find the cycle ambiguity. Afterward, we can use carrier phase to position and survey the cycle slip by accumulating the Doppler shift of the satellite signal. The result of static position test

APA, Harvard, Vancouver, ISO, and other styles

43

Li, Chi-Han, and 李紀漢. "Accuracy Improvement on Cash Flow Forecasting Model on Architectural Engineering." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/26317868118081075026.

Full text

Abstract:

碩士<br>逢甲大學<br>土木工程所<br>94<br>Sales, field administration and finance are the key to operation management of construction companies, also the essentiality to survival of construction contractors. Finance management back-ups sales and field administration, and cash-flow among finance management as important as keeping blood flowing in human bodies. The major profit comes from getting engineer projects, the finance management of each engineering project needs to probe into operation flow and finance management of every bid, operation and even final in order to consolidating and modifying an achie

APA, Harvard, Vancouver, ISO, and other styles

44

CAI, JHENG-JHE, and 蔡正哲. "Accuracy improvement of image database positioning by using smart phone." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/20837220759333644575.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>機械工程系<br>102<br>Currently positioning mobile phone is using GPS but it always be affected by environmental factors which end up positioning error. In this thesis our main research directions is by using the images to assist mobile phone positioning. In the case of building an image database, use shooting image and the information on mobile phone sensor to achieve high precision positioning. The thesis is divided into three major structures, mainly is building an image database to search images then use the same feature points and the forward intersection method to locate, eff

APA, Harvard, Vancouver, ISO, and other styles

45

Li, Kuan-Lin, and 李冠霖. "Analysis and Accuracy Improvement of Robot Manipulators with Joint Clearance." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/98359688196297072401.

Full text

Abstract:

碩士<br>國立臺灣大學<br>機械工程學研究所<br>104<br>This study presents a method to improve manipulator accuracy by predicting uncertainty from the trajectory of manipulators. We construct the dynamic of manipulators with clearances equations and use them to obtain the operation error of a given trajectory. We are able to predict the joint clearance and arrange a trajectory with smaller error through optimization technics using the proposed method. This study reduces the average error at target points from 0.637 mm to 0.031 mm for robot manipulator with joint clearance 0.328 mm, 0.171 mm, and 0.483 mm, that is

APA, Harvard, Vancouver, ISO, and other styles

46

Wang, Yung-Liang, and 王永良. "Synchronization Positioning Accuracy Improvement of Independent Wheels of Stocker Cranes." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/01936031550291728363.

Full text

Abstract:

碩士<br>國立高雄應用科技大學<br>電機工程系<br>97<br>Stocker equipment in the panel industry at present is nearly all foreign equipment. The reason is that some structural design still waits break-through in machinery. Another reason is the high demand of control systems. Stocker utilizes many axes and operates at high-speed with heavy load, therefore the error of positioning is usually not neglectable. In general, Stocker servo systems employ outside encoders to increase speed and compensation near the accurate position. These kinds of control introduce vibration of the Stocker servo systems. This study contr

APA, Harvard, Vancouver, ISO, and other styles

47

Huang, Hsin Hung, and 黃信紘. "The Process improvement and accuracy analysis of Ceramic Laser Fusion." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/98611488392252016455.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Huang, Shih-Yu, and 黃仕宇. "Improvement of Machining Accuracy at Corner Parts for Wire-EDM." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/84436035780014677823.

Full text

Abstract:

碩士<br>國立交通大學<br>控制工程系<br>85<br>Manufacturing industry of nowadays follows a trend towards high precision machining. Wire electrical discharge machining (Wire-EDM) has almost occupied an important position in some production fields, due to its capability of machining hard materials and intricate shapes. However, the machining accuracy, especially at corner parts, may be destroyed because of some phenomena such as wire deflection and vibration, etc. The purpose of this thesis is to develop a

APA, Harvard, Vancouver, ISO, and other styles

49

Chen, Guan-Ru, and 陳冠儒. "Accuracy Improvement of Closed-Form TDOA LocationMethods Using IMM Algorithm." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98899202417333178099.

Full text

Abstract:

碩士<br>國立中山大學<br>電機工程學系研究所<br>98<br>For target location and tracking in wireless communication systems, mobile target positioning and tracking play an important role. Since multi-sensor system can be used as an efficient solution to target positioning process, more accurate target location estimation and tracking results can be obtained. However, both the deployment of designed multi-sensor and location algorithm may affect the overall performance of position location. In this thesis, based on the time difference of arrival (TDOA), two closed-form least-square location methods, spherical-interp

APA, Harvard, Vancouver, ISO, and other styles

50

沈昱勝. "A Strategy for Improvement of Doppler Estimates and Navigation Accuracy." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/48442889735672320230.

Full text

Abstract:

碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>99<br>The paper by Kalman algorithm combines with design of ultra-tight integration navigation. Ultra-tight integration, also known as deep integration, has superb complementary nature between GPS and INS when front-end receiver receives I.Q. signals for real-time tracking. And velocity complementary is used to estimate the drift rate of auxiliary carrier Doppler ultra-tight structure, so as to enhance the performance of loop tracking. The structure of Doppler ultra-tight compensated integration provides more accurate concept of drifting rate which is resulte

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!