Yeong‐Hwa Chang

ORCID: 0000-0001-9451-1028
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About
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Research Areas
  • Adaptive Control of Nonlinear Systems
  • Stability and Control of Uncertain Systems
  • Magnetic Properties and Applications
  • Distributed Control Multi-Agent Systems
  • Neural Networks Stability and Synchronization
  • Metallic Glasses and Amorphous Alloys
  • Control and Dynamics of Mobile Robots
  • Electric Motor Design and Analysis
  • Fuzzy Logic and Control Systems
  • Control Systems and Identification
  • Sensorless Control of Electric Motors
  • Neural Networks and Applications
  • Magnetic Bearings and Levitation Dynamics
  • Magnetic properties of thin films
  • Teleoperation and Haptic Systems
  • Advanced Control Systems Design
  • Advanced Control Systems Optimization
  • Iterative Learning Control Systems
  • Thin-Film Transistor Technologies
  • Magnetic Field Sensors Techniques
  • Corporate Finance and Governance
  • Video Surveillance and Tracking Methods
  • Robotics and Automated Systems
  • Multilevel Inverters and Converters
  • Magneto-Optical Properties and Applications

Chang Gung University
2014-2025

Ming Chi University of Technology
2018-2025

Ming Chuan University
2013-2023

Taiwan Semiconductor Manufacturing Company (Taiwan)
1996-2023

National Kaohsiung University of Science and Technology
2020

Linkou Chang Gung Memorial Hospital
2017-2020

Johnson & Johnson (United Kingdom)
2019

Chung Yuan Christian University
2007-2018

National Chung Hsing University
2018

Tamkang University
2017

Abstract With the aim of enhancing field‐effect mobility by promoting surface‐mediated two‐dimensional molecular ordering in self‐aligned regioregular poly(3‐hexylthiophene) (P3HT) we have controlled intermolecular interaction at interface between P3HT and insulator substrate using self‐assembled monolayers (SAMs) functionalized with various groups (–NH 2 , –OH, –CH 3 ). We found that, depending on properties surface, nanocrystals adopt two different orientations—parallel perpendicular to...

10.1002/adfm.200400054 article EN Advanced Functional Materials 2005-01-01

Background: Parkinson's disease (PD) is the second most common neurodegenerative disease, and α-synuclein plays a critical role in pathogenesis of PD. Studies have revealed controversial results regarding correlation between motor severity levels peripheral blood from patients with Objective: We examined plasma or serum PD investigated relationship level symptom severity. Methods: recruited 88 participants (48 40 healthy controls). Clinical information was collected, venous drawn each...

10.3389/fneur.2019.01388 article EN cc-by Frontiers in Neurology 2020-01-20

In this paper, a novel fuzzy-sliding and fuzzy-integral-sliding controller (FSFISC) is designed to position the yaw pitch angles of twin-rotor multi-input-multi-output system (TRMS). With coupling effects, which are considered as uncertainties, highly coupled nonlinear TRMS pseudodecomposed into horizontal subsystem vertical (VS). The proposed FSFISC consists an FISC for VSs, respectively. reaching conditions stability with guaranteed. Simulation results included indicate that presented can...

10.1109/tfuzz.2010.2051447 article EN IEEE Transactions on Fuzzy Systems 2010-06-03

This paper mainly addresses the decentralized formation problems for multiple robots, where a fuzzy sliding-mode controller (FSMFC) is proposed. The directed networks of dynamic agents with external disturbances and system uncertainties are discussed in consensus problems. To perform control to guarantee robustness, novel algorithm combining concepts graph theory sliding-model presented. According communication topology, stability conditions can be determined so that an FSMFC derived. By...

10.1109/tsmcb.2011.2167679 article EN IEEE Transactions on Systems Man and Cybernetics Part B (Cybernetics) 2011-10-14

In this paper, the balance control of a ball and beam system is considered. Based on T-S fuzzy modeling, dynamic model formulated as strict feedback form with modeling errors. Then, an adaptive surface (DSC) utilized to achieve goal positioning subject parameter uncertainties. The robust stability closed-loop preserved by using Lyapunov theorem. addition simulation results, proposed model-based controller applied real for practical evaluations. Simulation experimental results illustrate that...

10.1109/tie.2012.2192891 article EN IEEE Transactions on Industrial Electronics 2012-04-11

This paper presents a new robust adaptive control method for class of nonlinear systems subject to uncertainties. The proposed approach is based on an dynamic surface control, where the system uncertainties are approximately modeled by interval type-2 fuzzy neural networks. In this paper, stability closed-loop guaranteed Lyapunov theorem, and all error signals shown be uniformly ultimately bounded. addition simulations, applied real ball-and-beam performance evaluations. To highlight...

10.1109/tcyb.2013.2253548 article EN IEEE Transactions on Cybernetics 2013-04-19

We studied systematically the influence of in situ postannealing treatment ultrahigh vacuum grown polycrystalline pentacene thin film transistor. The gradual grain growth with elimination defects and misoriented crystallites is confirmed x-ray diffraction (XRD) data atomic force microscopy image as annealing temperature increases. XRD reveal that molecules are packed parallel to each other an upright position a tilting angle 15.5°. results enhanced field effect mobility organic transistors...

10.1063/1.1643189 article EN Journal of Applied Physics 2004-02-13

Visually challenged people (VCPs) face many difficulties in their routine life. Usually, cases, they need to depend upon others, which makes them unconfident an unfamiliar environment. Thus, this paper, we present aid that helps detecting obstacles and water puddles way. This system comprises a walking stick Android-based applications (APPs). The is embedded with Raspberry Pi programmable interface controller (PIC) as control kernel, sensors, global position (GPS) module, alert-providing...

10.3390/s19010130 article EN cc-by Sensors 2019-01-02

With the rapid development of artificial intelligence, much more attention has been paid to deep learning. However, as complexity learning algorithms increases, needs computation power hardware facilities become crucial. Instead focus being on computing devices like GPU computers, a lightweight algorithm could be answer for this problem. Cross-domain applications have attracted great interest amongst researchers in academia and industries. For beginners who do not enough support with...

10.3390/mi13101678 article EN cc-by Micromachines 2022-10-05

This paper mainly studies the magnetomechanical effects of three-phase three-leg transformers with amorphous cores in different bending structures, where magnetic properties audible noises related to core vibrations are discussed. In general, a Fe-based SA1 exhibits higher noise and magnetostriction than that silicon steel core. Audible can be more easily induced especially after lamination process. Experiments performed this study use structures determine torsion stresses between leg yoke....

10.1109/tmag.2011.2146242 article EN IEEE Transactions on Magnetics 2011-10-01

Pain is a distressing symptom of Parkinson disease (PD). We aim to determine whether the genetic variants chronic pain-related genes contribute pain in PD patients. included 418 patients and evaluated severity on King's scale. genotyped rs6267, rs6269, rs4633, rs4818 rs4680 COMT, rs6746030 SCN9A, rs1799971 OPRM1. In total, 193 participants (46.2%) experienced pain. Compared pain-free patients, with had an earlier age onset, longer duration, higher depression motor (P < 0.01). The frequencies...

10.1038/s41598-017-06782-z article EN cc-by Scientific Reports 2017-07-18

Predictive maintenance techniques can determine the conditions of equipment in order to evaluate when should be performed. Thus, it minimizes unexpected device downtime, lowers costs, extends lifecycle, etc. Therefore, this article developed a predictive mechanism with construction test platform and data analysis along machine learning. The information transmission sensors was based on Raspberry Pi via TCP/IP (Transmission Control Protocol/Internet Protocol) communication protocol. used for...

10.3390/s19183884 article EN cc-by Sensors 2019-09-09

The industry fastest time-to-manufacturability 3nm CMOS platform technology is presented. FinFlex™ with standard cells consisting of different fin configurations introduced for the first time to offer critical design flexibility better power efficiency and performance optimization compared traditional FinFET technologies. An aggressive scaling ~1.6X logic density increase, 18% speed improvement 34% reduction are achieved over our previous 5nm process. This provides best-in-class PPAC values...

10.1109/iedm45625.2022.10019498 article EN 2022 International Electron Devices Meeting (IEDM) 2022-12-03

This paper explores the application of ESP32 microcontroller in edge computing, focusing on design and implementation an server system to evaluate performance improvements achieved by integrating cloud computing. Responding growing need reduce burdens latency, this research develops server, detailing hardware architecture, software environment, communication protocols, framework. A complementary framework is also designed support processing. deep learning model for object recognition...

10.3390/s25061656 article EN cc-by Sensors 2025-03-07

Master–slave teleoperation systems with haptic feedback enable human operators to interact objects or perform tasks in remote environments. This paper presents a sliding-mode control scheme tailored for bilateral operating the presence of unknown uncertainties and time-varying delays. To address but bounded uncertainties, adaptive laws are derived alongside controller design. Additionally, linear matrix inequality is solved determine allowable bound Stability closed-loop system ensured...

10.3390/robotics13060089 article EN cc-by Robotics 2024-06-13

This paper aims to establish a predictive model for battery lifetime using data analysis. The procedure of establishment is illustrated in detail, including the pre-processing, modeling, and prediction. characteristics lithium-ion batteries are introduced. In this study, analysis performed with MATLAB, open-source provided by NASA. addressed models include decision tree, nonlinear autoregression, recurrent neural network, long short-term memory network. part training, root-mean-square error,...

10.3390/en16073096 article EN cc-by Energies 2023-03-28

This paper presents a new multistructure fluxgate magnetic sensor composed of Metglas <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Fe-based amorphous HB1 material. The core thickness the fabricated structure is 0.0254 mm × 30 pieces, and its width 5 mm. loss simulated through finite element analysis. experimentally analyzed over frequency range 0.5-3 kHz. performance exploits advantages core-shaped material as well second-harmonic...

10.1109/tmag.2013.2248702 article EN IEEE Transactions on Magnetics 2013-07-01

In this paper, an open source robotic middleware ROS is applied to identify objects with a Raspberry Pi based mobile robot. Faster R-CNN algorithm considered for enhanced deep learning. The capabilities of robot control and object detection are verified through experimental validations. Based on low-cost kernel, easy-to-use interface developed integrate front-end back-end applications. Firstly some packages the needed be designed. Then captured environment information will provided objective...

10.1109/icasi.2018.8394348 article EN 2018 IEEE International Conference on Applied System Invention (ICASI) 2018-04-01

This paper focuses on the study of lap joints for amorphous cores, where magnetic loss and noise related to lap-joint configurations are considered. Both conventional step-lap (CSL) a newly developed (NSL) addressed, in which special emphasis is put underlying physical mechanisms number overlap. The NSL core exhibits unique distribution numbers overlap alignment that will reduce sensitivity subject variations magnetostriction. Finally, investigate performance properties, three-phase wound...

10.1109/tmag.2010.2045738 article EN IEEE Transactions on Magnetics 2010-05-28
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