Дисертації з теми "Optical sensing and motion control"
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Long, Fei. "Three-Dimensional Motion Control and Dynamic Force Sensing of a Magnetically Propelled Micro Particle Using a Hexapole Magnetic Actuator." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452093964.
Повний текст джерелаLi, Li Wang Fei-Yue. "Advanced motion control and sensing for intelligent vehicles." New York : Springer, 2007. http://www.myilibrary.com?id=113830.
Повний текст джерелаLin, Likun. "SDN-Enabled Dynamic Feedback Control and Sensing in Agile Optical Networks." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613595.
Повний текст джерелаBarsky, Michael Frederick. "Holographic sensing for control of flexible structures." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115002/.
Повний текст джерелаFrey, Bernhard F. "Differential optical motion and its functionality for the perception and control of heading." Thesis, University of Canterbury. Psychology, 1996. http://hdl.handle.net/10092/4514.
Повний текст джерелаMerrell, Paul Clark. "Structure from Motion Using Optical Flow Probability Distributions." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd764.pdf.
Повний текст джерелаLewis, Jeremy. "A steady state tip control strategy for long reach robots." Thesis, Middlesex University, 1996. http://eprints.mdx.ac.uk/13569/.
Повний текст джерелаZhou, Jia Qi. "Simplified Analysis of IMU Sensor Corruptions on Existing Pendulation Control System For Ship-Mounted Crane." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/36123.
Повний текст джерелаMaster of Science
Mikov, Nikolay. "A distributive approach to tactile sensing for application to human movement." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/11608.
Повний текст джерелаJain, Advait. "Mobile manipulation in unstructured environments with haptic sensing and compliant joints." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45788.
Повний текст джерелаAlfeeli, Bassam. "Miniature gas sensing device based on near-infrared spectroscopy." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35911.
Повний текст джерелаMaster of Science
Swanepoel, Petrus Johannes. "Omnidirectional image sensing for automated guided vehicle." Thesis, Bloemfontein : Central University of Technology, Free State, 2009. http://hdl.handle.net/11462/39.
Повний текст джерелаAutomated Guided Vehicles (AGVs) have many different design specifications, although they all have certain design features in common, for instance they are designed to follow predetermined paths, and they need to be aware of their surroundings and changes to their surroundings. They are designed to house sensors for navigation and obstacle avoidance. In this study an AGV platform was developed by modifying an electric wheelchair. A serial port interface was developed between a computer and the control unit of the electric wheelchair, which enables the computer to control the movements of the platform. Different sensors were investigated to determine which would be best suited and most effective to avoid collisions. The sensors chosen were mounted on the AGV and a programme was developed to enable the sensors to assist in avoiding obstacles. An imaging device as an additional sensor system for the AGV was investigated. The image produced by a camera and dome mirror was processed into a panoramic image representing an entire 360o view of the AGV‟s surroundings. The reason for this part of the research was to enable the user to make corrections to the AGV‟s path if it became stuck along the track it was following. The entire system was also made completely wireless to improve the flexibility of the AGV‟s applications.
Bafumba, Liseli Joël. "Design and control of a piezoelectric positioning systems, with high resolution, multiple degrees of freedom and an embedded measurement by self-sensing." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD017.
Повний текст джерелаCurrently, systems integrate more and more functionalities into smaller volumes thanks to embedded micro-components. The assembly of those components requires precise and repeatable systems of manipulation. Substantial amounts of research have been carried out for developing actuators and microrobots to perform positioning or manipulation with micron- or even submicron accuracies. Piezoelectric technologies play a fundamental role in positioning applications with nanoscale or even lower resolution. These materials make possible the design and development of positioning systems with high resolution and bandwidth. However, nonlinear effects such as hysteresis and creep affect the position accuracy of piezoelectric-based systems if not controlled. Often, position sensors are mounted to these systems to permit a feedback control and the elimination of the hysteresis and creep effects. Nonetheless, the integration of sensors to enable quality and robust servo control poses specific problems for microrobots. This is especially true when the number of degrees of freedom (DOF) increases. Precision position sensors are usually very bulky and expensive. Alternative solutions to the integration of external position sensors can be grouped into two categories: either by open-loop control, also called feedforward control schemes or by Self-Sensing Actuation (SSA) control-based techniques, that is, a feedback control that uses the piezoelectric actuator as its own sensor.In this thesis, the objective is to design and control a piezoelectric-based positioning system with an embedded measurement by SSA method and having several degrees of freedom. To this end, the two classes of SSA, namely SSA based on the piezoelectric direct effect and the SSA based on the change of electrical properties of the piezoelectric actuator (PEAs), are studied in depth to determine the more adequate for force and position control in piezoelectric actuators typified by creep and hysteresis nonlinearities and devoted to precise operations. Additionally, from this study, an improved constitutive model and parameter identification technique are presented which includes the electromechanical coupling effect on the piezoelectric material properties (elastic and dielectric constants).A novel technique for real-time evaluation of the PEA's electrical properties is developed. This evaluation is based on the measurement of the amplitude of the detection current that results from the application of high-frequency low amplitude input voltage that is superimposed to the control input voltage which actuates the PEA. Then an estimator that uses the detection current to estimate the PEA's position is designed. Finally, a microrobotics platform for planar positioning with high resolution and the developed embedded measurement by SSA is presented
Acosta, Reche Manuel [Verfasser], Valentin [Akademischer Betreuer] Ivanov, Yuri A. W. [Gutachter] Shardt, and Daniel [Gutachter] Watzening. "Vehicle dynamics virtual sensing and advanced motion control for highly skilled autonomous vehicles / Manuel Acosta Reche ; Gutachter: Yuri A.W. Shardt, Daniel Watzening ; Betreuer: Valentin Ivanov." Ilmenau : TU Ilmenau, 2020. http://d-nb.info/1204827176/34.
Повний текст джерелаHuang, Yanan. "Active Control and Adaptive Estimation of an Optically Trapped Probing System." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250617605.
Повний текст джерелаLiu, Zhen. "Reconstruction and Control of Tip Position and Dynamic Sensing of Interaction Force for Micro-Cantilever to Enable High Speed and High Resolution Dynamic Atomic Force Microscopy." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483629656167247.
Повний текст джерелаZhang, Zhipeng. "MAGNETIC TWEEZERS: ACTUATION, MEASUREMENT, AND CONTROL AT NANOMETER SCALE." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1243885884.
Повний текст джерелаAuthié, Colas. "Contrôle visuel du déplacement en trajectoire courbe : approche sensorimotrice du rôle structurant du flux optique." Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22085.
Повний текст джерелаThe main purpose of this dissertation is to determine the role of the direction and movement of the eyes and the head in the perception and control of self-motion in curved trajectories, with respect to the properties of the optical flows generated in a stable environment. To do so, we used two experimental methods: a psychophysical approach which allows to assess human observers' ability to perceive the direction of self-motion; and a behavior-based approach on a driving simulator. The two methods combined should help to highlight active perception of self-motion.The introduction reviews the current knowledge of perceptuo-motor strategies during curve driving. In this context, we put a stress on both (1.) the particular role of the tangent point -- in the driving situation on a delimited road, and on the role of the optic flow in general (apparent transformation of the optic array during self-motion), emphasizing the capability of humans to spatially interpret the movement; and (2.) on the duality between movement and perception. We then address the role of head-and-eye combined movements, in a functional perspective of the control of self-motion. In a first experimental section, we analyze the oriented movements of the head in simulated curve driving. We demonstrate that head movements are independent from the handling of the steering wheel, and that they actively participate in the gaze orientation toward the tangent point.In a second experimental section, we set out to describe the combined movements of head and eyes, with respect to the geometry of the road environment. In a third section, we analyze in more details gaze behavior as a function of the tangent point direction and of the local speed of optical flow. We demonstrate that the tangent point corresponds to a local minimum of optic flow speed and that the global component of the optic flow induces a systematic optokinetic nystagmus. In a fourth section involving a psychophysical study, we scrutinize the effect of varying gaze direction on the discrimination of the direction of self-motion. We show that the trajectory discrimination thresholds are minimal when the gaze is oriented toward an area of minimum flow speed. We finally propose a model of trajectory change detection, relying on a Weber fraction of foveal flow speeds, predicting the experimental thresholds very precisely. The gaze orientation strategies we have observed (combination of head and eye movements) toward the tangent point are compatible with this model and with the hypothesis of an active an optimal selection of the information contained in the optical flow
Sohr, Martin. "Zabezpečovací systém pro rodinný dům." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219383.
Повний текст джерелаKuo, Chia-Heng, and 郭家恆. "Development of Motion Control System Applied on Multi-axis motion-sensing Platform." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7wk9qp.
Повний текст джерела國立中山大學
機械與機電工程學系研究所
107
In this thesis, Visual Studio C # is used as software development tool to establish a PC-based motion control system with commercially available motion control card. This is employed as the master controller for crank-links multi-axis motion-sensing platform. Servo motors, drivers, and reducers are integrated as the driving source in this crank-links platform system. Ethernet Control Automation Technology (EtherCAT) serial-transmission mechanism is utilized as the servo communication of these servo modules. To meet the operability of the user’s demand, the specific application programming interface (API) commands for motion control system are used to build the human machine interface. There are several testing functions established in this HMI for users including the system initialization, motion status feedback, security warning, etc. Inertial Measurement Unit (MPU-6050) is utilized for monitoring the slope of motion-sensing platform. With the evaluation of platform mechanical inertia and the driving modules, the optimized proportional-integral (PI) controlling parameters are calculated by simulating software. To enhance the response of the system, Cascade rule is imported to design PI controlling parameters. Compared with Auto-tuning, the step response simulation and experiments of velocity loop and position loop are tested in time domain. The response and motor bandwidth are improved effectively with parameters designed by Cascade rule. In the motion platform testing part, with the optimized parameters and using of Kalman filter algorithm, the platform angle measurement error is reduced 30% while rotating. At the final, test the control command and platform motions. The angular error of pitch motion is 0.596°; roll motion is 1.321°, and distance error of heave motion is 1.664 cm.
Teh, Chun-Fu, and 葉俊甫. "USE KINECT SENSING ROBOT FOOT TRAJECTORY TRACHING MOTION CONTROL." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/39976741357301129659.
Повний текст джерела大同大學
電機工程學系(所)
103
In this thesis, Kinect sensor is used to build a robust 3D leg gesture recognition system in legs action tracking such that the legs of the robot in the remote site can duplicate the leg actions that of the human. As compared to actions of the entire human body, the legs action behave more complex articulations and are more easily affected by kinematics modeling errors. It is thus a very attractive and challenging problem to transfer the leg gestures of the human after recognition to that of the robot. The robust leg gesture recognition is proposed to handle the kinematics and inverse kinematics from the legs' ankle trajectory obtained from the Kinect sensor. According to the leg inverse kinematics, the distance metric between human and the Kinect sensor is used to measure the dissimilarity between human and robot by legs shapes and ankle trajectory. As it only matches the ankle tip parts while not the whole leg, it can better distinguish the leg gestures of slight differences by inverse kinematics. The experiments demonstrate that the proposed leg gesture recognition system is accurate (a 95\% mean accuracy on a challenging 5-gesture dataset), distortions and orientation or scale changes, and can work in uncontrolled environments in cluttered backgrounds.
Wang, Chien-Wen, and 王建文. "Interactive Motion Sensing Game to Improve Postural Control Ability." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/37230569889246915772.
Повний текст джерела義守大學
資訊工程學系
102
Postural control is to maintain or control the body to achieve the positioning and stability. Impaired postural control may cause disadvantageous effects on one’s functional ability and raise their risk of falling. In this study, we apply the Kinect sensor, the Wii-Fit balance board and a seesaw board to build postural-suprapostural dual task training environment, allowing subjects to play batting ball game for improving their ability of postural control. Fifteen healthy adults (age: 24 ± 3 years) without any history of neurological disease were recruited in this study. All participants were instructed to perform the postural -suprapostural dual task training by playing six rounds of batting ball game on a seesaw board. Subjects were tested on a Wii-Fit balanced board while performing two-leg stance, one-leg stance, and airpillow stance for sixty seconds before and after the postural-suprapostural dual task training. Root mean square of center of pressure in the medial-lateral plane was computed to assess postural control. Our results indicated the postural-suprapostural dual task batting ball training game facilitate postural control improvements (p < 0.01).
Chang, Ting-yu, and 張廷宇. "Smart Optical Automotive Rain-Sensing Wiper Control System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/64315070946404719564.
Повний текст джерела明志科技大學
機電工程研究所
95
ABSTRACT The main function of the wiper for vehicle is to remove the rain/water and particles on the windshield in order to provide a clear viewing for the driver behind. However, the driver turns on the wiper based on the fuzzy-human being of the amount of rain/water on the shield. It is much more dangerous act when the car is just moving on the road. The wiper system of car is thus an active device of safety. The purpose of this thesis is to design the wiper control system, this system with the infrared light source LED, sensor and the light pipe of special design, the light shooting to inner light pipe and distribute evenly over the windshield. Most of diffusible light already over the way of critical angle, total internal reflection phenomenon arose in the windshield. The infrared light of total internal reflection sends back a sensor with a certain value. If the surface of the windshield contains raindrops, the result of the total internal reflection will reduce, and it can makes the responsive-value of sensor to reduce. In addition, this research builds sensing circuit and the control circuit of the wiper motor, 2.2 KHz is the fixed vibration rate of light source that can be detected through detecting circuit optical modulation function, and matching with a bandpass filter to suppress excepted light noise, and then deliver the signal to the micro-controller, and use micro-controller as a judgment unit of the signal-processing to make the noise reduce and raise judgment accuracy. To judge the weather sledding and precipitation is according to responsive-value, and it send a signal to circuit-controlling to drive wiper motor. By the experiment, it is better that the threshold value is set 0.025. It can make the timely reaction of the wiper cohere with drive safety. This system can suppress excepted light noise by optical modulation method was verified after experiment. Finally by the on-line experiment can auto-adjust immediately wiper speed according to precipitation; delay time is including: moderate rain(4.1016 mms/hr) 0.008s, heavy rain(29.297 mms/hr) 0.004s, small fog( 0.1054 mms/hr) 5.8s, heavy mist( 0.5859 mms/hr) 4.3s. So this system can respond the environment variety to make the Wiper Control System start and adjust the speed by itself.
Seebacher, J. Paul. "Motion control using optical flow of sparse image features." Thesis, 2015. https://hdl.handle.net/2144/15191.
Повний текст джерелаYeh, Shen-kai, and 葉勝凱. "Motion-Cueing Improvement on Simulator Using Intelligent Control and Sensing Technique." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/03953108966516916649.
Повний текст джерела逢甲大學
自動控制工程所
95
The purpose of this research is to improve the motion-cueing of the simulator. The purpose of this research is to improve the motion-cueing of the simulator. After we obtained the movement information with vision based system, we can achieve precisely closed-loop feedback servo control. By using single visual information, 3D positions of three feature points on the movable platform are obtained in order to determine the attitude of the motion platform in real-time. This constructed simulator can satisfy the training requirements of pilot-in-the-loop simulation, which is the focus of this research. Classical and fuzzy control washout algorithm will be proposed in this study to achieve the requirement of high motion-cueing fidelity within the limited platform working space. As we know, all the parameters of classical washout algorithm must be generated by hand-tuning process, but the parameters can be tuned automatically by using fuzzy rule. On the other hand, in order to achieve the real-time tracking control of the attitude in the motion-cueing platform, we design an auto-focusing technique of the vision machine and apply the dynamic image processing technique to measure the attitude of platform in real-time. In this research, we transform the images of feature points on the upper platform into the world coordinate system by using image coordinate transformation with plane projection transfer method, and then calculate the corresponding platform attitude. Close loop feedback control will be realized by sending the attitude of platform back to the computer.
汪奎仲. "Human Gesture Based Physical Agent Motion Control Using Body Sensing Technology." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/28669069442916020720.
Повний текст джерела逢甲大學
資訊工程學系
102
We proposes a motion-sensing technology based physical agent control interface. Through a Kinect skeleton tracking function used for recording users’ body motion data, users can easily translate human body motions into the commands/programs for triggering the corresponding robot motions. Such that an Application Programming Interface (API) for robot control/manipulation is therefore built. Such an API is helpful to programmers who involve robots’ motions in their programs in eliminating the burdens of low level and trivial coding of robot mechanical controls. Additionally, for the users who will write codes for performing continuous robot motions, this paper also proposes a graphic authoring tool for editing robot motion. Moreover, by combining the built-in speech recognition function of Kinect, programmers may easily design the desired robot motion.
CHIA, NAI-CHIEH, and 賈乃杰. "Human Gesture Based Multiple Physical Agent Motion Control Using Body Sensing Technology." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7649b5.
Повний текст джерела逢甲大學
資訊電機工程碩士在職學位學程
107
This paper proposes a system that simplifies the authoring of robot movements for users, capturing the user's gestures and movements in a somatosensory manner. And then the system converts them into robot movement commands using vectors and kinematics, and enhances the capturing of multiple human body movements through multiple Kinect devices. Identifying and capturing gestures and processes, and adding some of multi-agent interaction parameters, such as time space, to allow multiple users to use the body as a controller to control the actions of multiple agents simultaneously. Finally, by enhancing RDSL into Multi-Robot-control Domain Specific Language (MRDSL), the action authoring mechanism can be used in other robot application systems as a complete robot development environment.
Yen, Chih-Hui, and 顏誌輝. "Applying Motion Sensing Control to Virtual Reality: Example on Tainan Chihkan Tower Navigation." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/774mxz.
Повний текст джерела國立臺中科技大學
多媒體設計系碩士班
100
The innovation of motion sensing interaction technology is more creative in nowadays. Game development had been using motion sensing interaction to become a new multimedia interaction spotlight. Therefore, our study is exploring the effect of control methods using users body pose to operate interface on multimedia. By using Microsoft’s new product “Kinect” as an input sensing device to identify body pose changing through image recognition. The virtual reality digital content combined with human-computer interaction and used motion sensing interaction of directing manipulation applying to virtual reality navigation. Most virtual reality digital navigation are using keyboard and mouse as input device in general. Our study featured that user do not wear any devices. Integration visual-based detection technology with Tainan Chihkan Tower navigation is our purpose. To build different from traditional way controls virtual reality by giving new virtual reality navigation interaction. User experience and user interactive feedback make much more effective. After integrating our system, we execute user questionnaire to know what body or gesture is better to navigate. Then, we define two control ways and adjust navigation details. After adjusting, we do the second user questionnaire into three parts, motion sensing, user satisfaction, and SUS evaluation. The results show that all of mean satisfactions are more than average value. That indicates our interaction navigation is accepted for users, most of these users considered our research is innovating and entertaining as well.
Gutiérrez-Medina, Braulio. "Quantum transport and control of atomic motion with light." Thesis, 2004. http://hdl.handle.net/2152/1198.
Повний текст джерелаGutiérrez-Medina, Braulio Raizen Mark George. "Quantum transport and control of atomic motion with light." 2004. http://wwwlib.umi.com/cr/utexas/fullcit?p3142733.
Повний текст джерелаChahal, Anthony M. "Optical end point sensing and digital control of a scanning tunneling microscope." Thesis, 1993. http://hdl.handle.net/2429/1292.
Повний текст джерелаFu, Pin-Yen, and 傅彬硯. "Design of an Automated Optical Inspection System Motion Control Based on Industrial Personal Computer." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/05183708653793423972.
Повний текст джерела崑山科技大學
電機工程研究所
102
The purpose of the dissertation is to develop a motion control for an automated optical inspection (AOI) system based on an industrial personal computer (IPC). The IPC is used as AOI system host control via a variety of interface card to control related equipment, which achieve the goals set by the detection system. The AOI system has the complete and continuous vision image capture function, which can detect the glass defect. In this study, Borland C + + is used as an integrated development environment. The C language is used as a system architecture design and development to construct an AOI motion control. The control objects contain the linear servo motor, line scan camera, light sources produce machine, motion control card, video capture card and A / D, D / A servo control card, which constitutes the AOI system. The experimental results show that the proposed AOI system has been constructed properly.
"Analytical Control Grid Registration for Efficient Application of Optical Flow." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.17831.
Повний текст джерелаDissertation/Thesis
Ph.D. Bioengineering 2013
Förster, Leonid [Verfasser]. "Microwave control of atomic motion in a spin dependent optical lattice / vorgelegt von Leonid Förster." 2010. http://d-nb.info/100992625X/34.
Повний текст джерелаSi-ChenPan and 潘思辰. "Design and Control of an Active Stage for Suppressing Motion Induced Vibration in Optical Inspection Systems." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2q57z7.
Повний текст джерела國立成功大學
機械工程學系
107
Along with the development of industrial technologies in various manufacturing and metrology applications, fast positioning and vibration suppression play important roles in virtually all tasks requiring high speed of maneuvers with sufficient motion accuracy. One typical example is on the optical inspection system, it performs numerous product defect inspections by fast moving to the desired inspection locations and take images for defect evaluation. Due to the inherent structural compliance and the inertial force generated during fast movement, residual vibrations will be inevitable for the point-to-point movement and this implies that additional settling time would be required for avoiding blurred images. Obviously, mounting a controllable stage on machine can effectively reduce residual vibration, thereby improving inspection efficiency. Therefore, this work develops an active stage with rubber bearings and flexible structure equipping with a CCD camera, designs the corresponding controller, and verifying the vibration suppression capability of the active stage system under the action of the linear motor. In terms of stage design, the four sets of rubber-bonded aluminum blocks form rubber bearing which provide stiffness of the stage, and a flexible beam is mounted on stage for imitating the camera-support structure of the real machine. The model parameters are identified by dynamic testing and the mathematical model of the active stage is obtained. In terms of controller design, this work adopts both loop transmission (L.T.) shaping and input shaping methods. Through the L.T. method, two schemes called A and B, have been developed successively to handle the positioning and vibration suppression. On the issue of stage positioning, the overshoot and settling time of the A scheme are 9.2% and 0.16s. Once it cooperating with input shaping scheme, the corresponding performance can be further reduced to 7.1% and 0.09s. On the vibration suppression issue, the residual vibration and settling time of the A scheme are originally 154.1% and 1.3s and are improved to 31.0% and 0.60s with input shaping schemes. Therefore, the shaping-control integration can effectively improve the system controlled performance in comparison with the results from control only. Meanwhile, in order to further improve the vibration suppression in feedback control, we also develop the B scheme and it successfully reduces residual vibration and settling time to 30.4% and 0.25s. Finally, essential AOI inspection experiments are carried. Based on captured image, the active stage employ above schemes can indeed reduce the blur level to achieve a faster inspection. This work successfully confirmed that the active stage control system can effectively reduce residual vibration during optical inspection, thereby improving inspection efficiency.
Babakeshizadeh, Vahid. "Biologically-inspired Motion Control for Kinematic Redundancy Resolution and Self-sensing Exploitation for Energy Conservation in Electromagnetic Devices." Thesis, 2014. http://hdl.handle.net/10012/8123.
Повний текст джерелаLiu, Hsing-Fu, та 劉星甫. "THE STUDY OF SURFACE PLASMON RESONANCE OPTICAL FIBER- 400 ?慆 SENSORS BASED ON TiO2 COATING FOR SENSITIVITY IMPROVEMENT AND WAVELENGTH CONTROL IN SENSING". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/96671229685193272392.
Повний текст джерела大同大學
光電工程研究所
98
Surface Plasmon Resonance(SPR)technique has been widely used in the chemical and biological properties and molecular interaction detection. Conventional SPR sensors have the advantages of high sensitivity, real-time dynamic measurement capability, and in the biological sensing without the use of labels. Besides, fiber itself has small size, low cost, and high compatibility with the requirement of SPR sensing and applications. In this paper, the SPR fiber sensors we proposed enable us to combine the advantages of optical fiber and multilayer SPR sensing structure to develop a new type of SPR fiber sensor, for detecting the small refractive index change of the medium or monitoring the thickness during the nano thin film deposition. The multi-mode fiber we proposed in this paper with the core diameter of 400 ?慆 is prepared as a sensor platform, for the SPR measurement after the multi-layer TiO2/Au films were coated on the side-polished surface. We adjust the thickness of TiO2 film that coated on the Au thin film surface to shift the guided light SPR absorption from the ordinary region of the wavelength of 600-700 nm to the region of 1300-1550 nm that normally uses for the optical fiber communication. The SPR fiber sensors possessing SiO2/Au multi-layer structure can easily be integrated with existing optical fiber communication network as a smart fiber sensing system. Besides, the multi-layer structure we proposed can also enhance the SPR sensing sensitivity as well as increase the dynamic range of the SPR dip wavelength measurement. The experiment results show that the optimal sensitivity of the refractive index detection for the DI water and NaCl solution exhibits the ability as low as 3.47 ?~10-6 a.u., with the thickness of the TiO2 layer of 40 nm coated on the Au film surface.
Roberts, Lyle Edward. "Internally Sensed Optical Phased Arrays." Phd thesis, 2016. http://hdl.handle.net/1885/110523.
Повний текст джерелаVorster, Willem Adriaan. "Assessment and analysis of wildfires with the aid of Remote Sensing and GIS." Diss., 2013. http://hdl.handle.net/10500/14433.
Повний текст джерелаEnvironmental Sciences
M. Sc. (Environmental Science)
Prates, Pedro Alexandre de Sousa. "A Cooperative Approach for Autonomous Landing of UAVs." Master's thesis, 2018. http://hdl.handle.net/10362/51002.
Повний текст джерелаEloff, Corné. "Spatial technology as a tool to analyse and combat crime." Thesis, 2006. http://hdl.handle.net/10500/1193.
Повний текст джерелаCriminology
D.Litt. et Phil. (Criminology)