检索结果-内蒙古大学图书馆

Fault tolerance events ordering with coverage and connectivity aware clustering in wireless sensor and actuator networks

引用

International Journal of Applied Science and Engineering 2019年第3期16卷 201-214页

作者： Wu, Yi-Chao Interdisciplinary Program of Green and Information Technology National Taitung University Taitung Taiwan

A network delay or a fail link is prone to be occurred in wireless sensor and actuator networks (WSAN). Since the events captured by sensors are related to others, events ordering is an vital issue in WSAN. However, it is hard to guarantee that no prior event is transmitted while the latter events arrive at actuator in network. While a fail link is occurred, it could be assumed as a special case that the delay is set to infinity. Event ordering by double confirmation (OBDC) was a typical events ordering while a network delay was occurred. Fault tolerance events ordering by aging learning (FTEOAL) was a typical events ordering mechanism while a fail link existed. However, both of them assumed that sensors were all covered by one actuator and none of them was the orphan sensor. Once a sensor was non-covered by an actuator or an orphan sensor existed, the rate of correct events ordering will decrease. Therefore, in this paper, we proposed a fault tolerance events ordering with coverage and connectivity aware clustering, FTEOCCAC. The simulation results demonstrated that events were treated in correct order even if the sensors are deployed randomly or an orphan sensor existed while a network delay or a fail link existed in network. The rate of correct events ordering could be closed to the expect value. © 2019 Chaoyang University of technology.

关键词： Coverage and connectivity aware clustering Fail link Network delay Orphan sensor Rate of correct events ordering Wireless sensor and actuator networks

来源：评论

学校读者我要写书评

暂无评论

Impact of control strategies on altitude control in indoor quadcopter

Impact of control strategies on altitude control in indoor q...

引用

2022 IET International Conference on Engineering Technologies and Applications, IET-ICETA 2022

作者： Liu, Chun-Hung Lai, Wei-Lin Shen, Shang-Chi Yeh, Shun-Pin Wu, Po-Cheng Wang, Yu-Chien Luo, Guan-Yu National Taitung University Interdisciplinary Program of Green and Information Technology Taitung Taiwan

ISBN: (数字)9781665491389

ISBN: (纸本)9781665491389

The indoor quadcopter is widely adopted because of its properties of maneuverability, mechanical simplicity, and excellent research platforms to perform control strategies. In this study, impact of several control strategies on altitude control has been provided with classic ZN PID, Fuzzy-based, and GA-based controllers. The buildin nonlinear mathematical model of Parrot Mambo Minidrone is adopted as the control models for the design and deployment in this study. According to the control models, a set of parameters of classic ZN PID controller is obtained as a baseline strategy. Fine-tuned parameters of classic PID are simulated to observe the altitude performance. A Fuzzy-based controller with proper fuzzy sets is also provided to examine the performance. Eventually, an empirical GA-based controller is developed to be compared with other control strategies. The results show that the GA-based controller performed the smallest integral of absolute error of altitude performance and demonstrated averagely 87% improvement of overall altitude error as compared with the baseline controller. © 2022 IEEE.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Effects of shot peening on the tribological properties of aluminum alloys with T6 treatment 6

Effects of shot peening on the tribological properties of al...

引用

6th International Conference on Precision Machinery and Manufacturing technology, ICPMMT 2021

作者： Chang, Y.P. Chu, L.M. Liu, C.T. Wang, J.C. Chen, K.W. Green Energy Technology Research Center Kun Shan University Taiwan Interdisciplinary Program of Green and Information Technology Department of Applied Science National Taitung University Taiwan

Aluminum alloy has many excellent properties such as light texture, corrosion resistance, and easy processing, etc., so it is widely used on the market. The shot peening method can effectively eliminate residual stress and increase its reverse stress, so as to achieve the purpose of anti-fatigue and prolong service life. Therefore, the effects of shot peening on the tribological properties of aluminum alloys with T6 Treatment are investigated in this study. The reciprocating friction test was carried out with three different aluminum alloy mid-plate test pieces, two different shot peening impact parameters and two different loads. Moreover, the macroscopic and microscopic methods are used to discuss the tribological performance of friction and wear. The experimental results show that the plastic deformation is formed on the surface of the material by the shot peening impact method. Although the hardness increases, it also causes inelastic and brittle properties. It can be seen that although the ball striking method can improve the performance of bending, tensile, compression and impact resistance to achieve the purpose of prolonging the service life, when repeated stress is applied, the fatigue resistance will decrease and it will not resist wear. The results will be beneficial to the future of the aerospace industry to develop more internationally competitive products. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Shot peening

来源：评论

学校读者我要写书评

暂无评论

Effects of the rolling directions on wear of the aluminum alloys 4th

Effects of the rolling directions on wear of the aluminum al...

引用

4th International Conference and Exhibition on Pharmaceutical Sciences and technology, PST 2021, and the 2nd International Conference on Engineering Tribology and Applied technology, ICETAT 2020

作者： Chang, Yuh-Ping Chu, Li-Ming Liu, Chien-Te Wang, Jin-Chi Chen, Kao-Wei Green Energy Technology Research Center Kun Shan University Taiwan Interdisciplinary Program of Green and Information Technology Department of Applied Science National Taitung University Taiwan

ISBN: (纸本)9783035715286

Due to the booming development of the automation industry and the transportation industry, the mechanical components are prone to wear under long-term operating conditions. To improve the wear resistance, effects of the rolling directions on wear of the aluminum alloys are studied. An optical microscope is used to analyze the crystal phase, and the correlation between the crystal grains and the rolling direction is studied. This study can therefore establish a key technology for improving the wear resistance of aluminum alloys. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Wear resistance

来源：评论

学校读者我要写书评

暂无评论

Effects of temperature rise of grease on lubricating performance of drive elements under the extreme pressure 4th

Effects of temperature rise of grease on lubricating perform...

引用

4th International Conference and Exhibition on Pharmaceutical Sciences and technology, PST 2021, and the 2nd International Conference on Engineering Tribology and Applied technology, ICETAT 2020

作者： Chang, Yuh-Ping Chu, Li-Ming Wang, Hsiang-Yu Liu, Chien-Te Chen, Qi-Wen Green Energy Technology Research Center Kun Shan University Taiwan Interdisciplinary Program of Green and Information Technology Department of Applied Science National Taitung University Taiwan

ISBN: (纸本)9783035715286

To transfer more power and use it in a heavy load environment, the contact surface between the ball and the track must bear great stress. The temperature always rises due to friction, which is more likely to cause problems of material deformation and fatigue failure. As a result, it will be a key technology to maintain a certain lubricating effect of the transmission components under the environment of heavy load and temperature rise. Through the analysis of friction coefficient and electrical contact resistance, the greases are used to test the lubricating effect of the transmission elements under the heavy load condition. The results will be helpful for the industry to use heavy load greases as a reference. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Temperature

来源：评论

学校读者我要写书评

暂无评论

Excitation of surface plasmon mode in bulk semiconductor lasers

引用

Applied Optics 2023年第14期62卷 3690-3695页

作者： Tseng, Chih Lung Wang, Chien Kun Lai, Chih Hsien Tsai, Cheng Hsiung Chiang, Po Jui Interdisciplinary Program of Green and Information Technology National Taitung University Taitung Taiwan Department of Electronic Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan

We propose a realistic process for the excitation of surface plasmon polariton (SPP) modes in a silicon photonic waveguide (WG). The process involves the placement of buried oxide (BOX) composed of silica between a WG and silicon substrate. When the BOX thickness is manipulated, different amounts of modal power leak toward the BOX into the substrate and simultaneously acquire compensation from a semiconductor located on the WG. The compensation related to the leakage can be used to infer transparency gain. Similar to the case for a semiconductor laser cavity, the lowest transparency gain among WG modes can be favored;thus, only one mode can survive in the WG, and it is in the region with the specified BOX thickness. Finally, we propose a credible mechanism suitable for demonstrating the region requirements of the existence of SPP modes. © 2023 Optica Publishing Group.

关键词： Silica

来源：评论

学校读者我要写书评

暂无评论

A Study on Wear Resistance of the Polymer Drivers for the Panel Cutting 8

A Study on Wear Resistance of the Polymer Drivers for the Pa...

引用

8th International Conference on Innovation, Communication and Engineering, ICICE 2019

作者： Chang, Yuh-Ping Chu, Li-Ming Wang, Hsiang-Yu Wang, Jin-Chi Kun Shan University Department of Green Energy Technology Research Center Tainan Taiwan Interdisciplinary Program of Green and Information Technology National Taitung University Department of Applied Science Taiwan

ISBN: (纸本)9781728158396

A forward-looking technology of wear resistance and low dust for the panel cutting should be further developed. Since the panel is a composite structure of a polarizing plate and a glass, it has a hard and brittle inherent nature. Although the laser cutting method can be finished, but because of the high cost and processing rate is low and so on, it is very difficult to be widely used by the industry. Hence, wire cutting is not only the key technology with more competitive market but also the great economic output. Based on this, the speed must be increased before the cutting wheel contacts the panel for reducing the variability of the initial cutting. In order to achieve a high level of cleanliness, the wear resistance of the drive element must be increased to reduce the generation of wear dust. Therefore, both of wear-resistance and low dust must be improved in the future. Moreover, effects of frictional heat on the wear must be taken into account. Therefore, the optimization drivers of polymers with steels for the panel cutting are investigated in this paper. By this way, the panel cutting technology with the high level of dust-free and long-term use of will be developed in line. © 2019 IEEE.

关键词： Wear resistance

来源：评论

学校读者我要写书评

暂无评论

Fluid Inertia Force Effects in Hydromagnetic Circular Stepped Squeeze Films

引用

Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao 2018年第4期39卷 419-425页

作者： Lin, Jaw-Ren Chu, Li-Ming Hung, Tzu-Chen Department of Mechanical Engineering Nanya Institute of Technology Taoyuan32091 Taiwan Department of Applied Science Interdisciplinary Program of Green and Information Technology National Taitung University 95092 Taiwan Department of Mechanical Engineering National Taipei University of Technology 10608 Taiwan

On the basis of the hydromagnetic flow theory, an inertia hydromagnetic lubrication equation has been derived for circular stepped squeeze film disks by applying the momentum integral method. Analytical solution of the film pressure, the load capacity and the squeeze film time are obtained in the present paper. It is found that the hydromagnetic squeeze film including the influences of fluid inertia forces provides an increased load capacity as well as a longer squeeze film time as compared to the non-inertia non-conducting-lubricant case. The improved squeeze film characteristics are further emphasized for the circular stepped disks operating at larger values of the density parameter and the magnetic Hartmann number, and smaller values of the radius ratio and the step height ratio. © 2018, Chinese Mechanical Engineering Society. All right reserved.

关键词： Magnetohydrodynamics

来源：评论

学校读者我要写书评

暂无评论

Image Recognition by YoloV4 for Vehicle Type Distinction in Side of Road

Image Recognition by YoloV4 for Vehicle Type Distinction in ...

引用

2022 IET International Conference on Engineering Technologies and Applications, IET-ICETA 2022

作者： You, Ting-Hao Wu, Yi-Chao Fanjiang, Yong-Yi Fu Jen Catholic University Computer Science and Information Engineering New Taipei City Taiwan National Taitung University Interdisciplinary Program of Green and Information Technology Taitung Taiwan

ISBN: (数字)9781665491389

ISBN: (纸本)9781665491389

At present, most of the domestic and foreign research on vehicle recognition focuses on real-time camera recognition in front of the vehicle while driving and real-time camera recognition over the road for overhead camera angles. For roads in mountainous areas or special terrain, due to the small hinterland on the left and right side of the road, it is not easy to set up overhead camera systems for the road. Therefore, this thesis proposes 'Yolo_v4-based road vehicle recognition' to solve the above problem. Unlike the overhead camera system, this side camera detachable temporary road vehicle recognition system only needs a very small road hinterland and can reduce the cost of space construction. The Yolo_V4 deep learning algorithm can accurately identify different vehicle types to ensure road safety and traffic monitoring. In this study, the accuracy of the vehicle recognition model for the side camera angle is 96%, which is comparable to the accuracy of the vehicle recognition model for the top camera angle. © 2022 IEEE.

关键词： Object detection

来源：评论

学校读者我要写书评

暂无评论

The Effects of Externally Magnetic Fields and Electrically Conducting Lubricants at Transient Squeeze MEHL Motion with Elastic Coating

引用

Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao 2022年第1期43卷 29-35页

作者： Chu, Li-Ming Chang, Yuh-Ping Cai-Wan, Chang-Jian Interdisciplinary Program of Green and Information Technology National Taitung University Taitung95092 Taiwan Department of Mechanical Engineering Kun Shan University Tainan71070 Taiwan Department of Mechanical and Automation Engineering I-Shou University Kaohsiung84001 Taiwan

The pure squeeze magneto-elastohydrodynamic lubrication (MEHL) motion of point contacts with an electrically conducting fluid in transverse magnetic field on elastic coating is explored under constant load process. The modified Reynolds, the rheology, the force balance, and the elastic deformation equations must be solved simultaneously to obtain the transient pressure profiles, film shapes, elastic deformation, and normal squeeze velocities. The differences between classical EHL and MEHL are discussed during the pure squeeze process. The simulation results reveal that the effect of externally applied magnetic field is equivalent to enhancing the effective lubricant viscosity. Therefore, as the Hartmann number (M) increases, the effect becomes more obvious. The larger the Hartmann number, the thicker the central film thickness and minimum film thickness, the smaller the maximum central pressure, the later the maximum central pressure and the dimple are formed, the smaller the central normal squeeze velocity. The central pressure decreases with increasing M at the initial stage. The central pressure increases with increasing M at the deformation stage. © 2022, Chinese Mechanical Engineering Society. All right reserved.

关键词： Magnetos

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：