检索结果-内蒙古大学图书馆

IEEE International Conference on Mechatronics and Automation

作者： Lin Bi Jian Guo Shuxiang Guo Zhendong Zhong Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems and Biomedical Robot Laboratory Tianjin University of Technology Tianjin China Intelligent Mechanical Systems Engineering Department Kagawa University Takamatsu Japan

ISBN: (纸本)9781479970995

The amphibious robots have been widely applied in kinds of fields, such as fishery industry, data collecting, submarine salvage and military etc. In this paper, we focus on a novel amphibious spherical robot system. In order to verify the kinematics characteristics of the amphibious robot, the Jacobian matrix based on the Denavit-Hartenberg parameters method, which can reflect the relation between velocity and angular velocity of the joint, can be obtained. The Jacobian matrix offers theoretical foundation for the following simulation analysis based on virtual prototype. We use 3D mechanical modelling software Solidworks to establish a model and import it into dynamics simulation software ADAMS (Automatic Dynamic Analysis of Mechanical systems). And then the joint simulation experimental data, such as the position, velocity and acceleration which can validate the feasibility of the walking gait planning. In the course of carrying on simulation we can carry on simulation course observing model altering and result treating. And get the walking speed of amphibious robot at the same time. Lastly, some experiments demonstrate that simulation results coincide with the result of kinematic analysis. The results prove that the simulation in ADAMS can be accurate to describe the kinematic characteristics of the robot.

关键词： Legged locomotion Robot kinematics Joints Kinematics Robot sensing systems Solid modeling

来源：评论

学校读者我要写书评

暂无评论

Effects of the pectus excavatum on the spine in patients of pectus excavatum with scoliosis

Effects of the pectus excavatum on the spine in patients of ...

引用

第十一届全国生物力学学术会议暨第十三届全国生物流变学学术会议

作者： Weihong Zhong Jinduo Ye Jifu Liu Chunqiu Zhang Linwei Lü Chunyue Zhang Bolun Liu Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System Tianjin University of Technology Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Military General Hospital of Beijing PLA

Objective:Pectus excavatum(PE)is the most frequently observed congenital deformity of the chest with a deep depression of the sternum in the anterior thoracic *** more than 20%of pectus excavatum patients were reported to have *** to now,no comprehensive analysis about the impact that pectus excavatum has on scoliosis has been performed,although previous research has involved correlation among scoli-

关键词： Effects of the pectus excavatum on the spine in patients of pectus excavatum with scoliosis

来源：评论

学校读者我要写书评

暂无评论

Fuzzy PID algorithm-based motion control for the spherical amphibious robot

Fuzzy PID algorithm-based motion control for the spherical a...

引用

IEEE International Conference on Mechatronics and Automation

作者： Jian Guo Guoqiang Wu Shuxiang Guo Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems and Biomedical Robot Laboratory Tianjin University of Technology Tianjin China Intelligent Mechanical Systems Engineering Department Faculty of Engineering Kagawa University Takamatsu Japan

ISBN: (纸本)9781479970995

Fuzzy control and PID control are often used in control area. However, a single Fuzzy control or PID control can not satisfy the need of the rising complexity and precision of control systems. Considering the disturbance in amphibious spherical robot, it is difficult to solve the control problem for a complex system of an amphibious spherical robot. This paper deeply analyzed the advantages and the disadvantages of Fuzzy control and PID control, and proposed a new Fuzzy PID control combined Fuzzy control and PID control. The simulation results show that the method of Fuzzy PID can effectively reduce the overshoot of the control system, accelerate the response speed, and shorten the adjustment time, In this way, The system can reduce the shock of amphibious spherical robot, and improve the stability, thus, the method can enhance the dynamic performance of the amphibious spherical robot.

关键词： PD control Fuzzy control Niobium Legged locomotion Process control

来源：评论

学校读者我要写书评

暂无评论

Numerical simulation and clinical verification of the minimally invasive repair of pectus excavatum

引用

Open Biomedical Engineering Journal 2015年 8卷 147-152页

作者： Zhong, WeiHong Ye, JinDuo Liu, JiFu Zhang, ChunQiu Zhao, MeiJiao Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin China School of Mechanical Engineering Tianjin University of Technology Tianjin China Military General Hospital of Beijing PLA Beijing China

Objective:In this article we proposed a modeling method by building an assembled model to simulate the orthopedic process of minimally invasive surgery for pectus excavatum and got the clinical verification, which aims to provide some references for clinic diagnoses, treatment, and surgery planning. Methods: The anterior chest model of a 15-year-old patient was built based on his CT images;and his finite element model and the Nuss bar were created. Coupling of nodal displacement was used to connect bones with cartilages of the anterior chest. Turning the Nuss bar over is completed by rotating displacement of it. By comparing the numerical simulation outcomes with clinical surgery results, the numerical simulation results were verified Results: The orthopedic process of minimally invasive surgery of pectus excavatum was simulated by model construction and numerical analysis. The stress, displacement fields and distribution of the contact pressure between the Nuss bar and costal cartilages were analyzed. The relationship between correcting force and displacement was obtained. Compared with the of clinical results, the numerical simulation results were close to that of the actual clinical surgery in displacement field, and the final contact position of the Nuss bar and the costal cartilages. Conclusion: Compared with the rigid model, the assembled simulation model is in more conformity with the actual clinical practice. The larger curvature results in the maximum equivalent stress, which is the main reason for clinical pain. Soft tissues and muscles should be taken into account in the numerical simulation process. © Zhong et al.;Licensee Bentham Open.

关键词： Bars (metal)

来源：评论

学校读者我要写书评

暂无评论

Battery energy efficiency of wireless sensor networks under different channels

引用

Journal of Computational Information systems 2014年第1期10卷 335-340页

作者： Yue, Youjun Li, Qiang Zhao, Hui Wang, Hongjun Tianjin Key Laboratory for Control Theory and Applications in Complicated System Tianjin University of Technology Tianjin 300384 China

In wireless sensor networks (WSNs), battery energy Efficiency is one of the key considerations since the nodes are driven by nonrenewable batteries. In this paper, we employ the nonlinear battery model, adopt FSK modulation technology which is more energy Efficiency in low speed data transmission occasions, analyze and compare the battery power Efficiency over various wireless channel models. According to the simulation results, the nonlinear battery model can accurately evaluate the node energy consumption and life time. Under the same system parameters, Path-loss channel has power Efficiency advantage over Rayleigh fading channel. There exists an optimizing modulation constellation that the battery is more energy-efficient. Copyright © 2014 Binary Information Press.

关键词： Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

An Analysis of Solar Heating System Assisted by Ground-source Heat Pumps in Office Building

引用

Procedia Engineering 2015年 121卷 1406-1412页

作者： Zhigang Wang Daxing Huang Pan Wang Qiang Shen Qingnan Zhang Yuexia Sun Tianjin Key Laboratory for Control Theory and Applications in Complicated System School of Electrical Engineering Tianjin University of Technology Tianjin300384 China School of Environmental Science and Engineering Tianjin University Tianjin 300072 China

Space heating accounts for large percentage of building energy consumption, which may cause air quality deterioration in cold climate area. Solar energy systems and ground-source heat pumps are two promising means of reducing the consumption of fossil energy and the emission of green-house gas. Taking a typical office building at Tianjin as an example, the application of solar heating system assisted by ground-source heat pumps was studied. The entire system was modelled via the TRNSYS simulation environment and the energy performance was evaluated based on the winter time operation schedule. It shows that the overall system COP can reach 8.17 and the heat pump COP is increased.

关键词： Heat pump Solar energy Heating system TRNSYS

来源：评论

学校读者我要写书评

暂无评论

The uncertainty assessment of vehicle speed measurement based on laser switch

The uncertainty assessment of vehicle speed measurement base...

引用

2nd International Conference on Communications, Signal Processing, and systems, CSPS 2013

作者： Li, Li He, Hong Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin China

ISBN: (纸本)9783319005355

This paper presents a vehicle speed measurement method based on laser switch, due to the effects of laser switch emission frequency and mechanical structure, it exists large error for measured speed. To ensure the measuring system meet accuracy requirements, for example a fixed length of 10 m, the uncertainty of laser switch speedometer was effective analyzed. Through making the effects of laser switch frequency distance and mechanical error averaged, the influence from switch frequency, mechanical error and other aspects was evaluated. Selected laser switch of 10 kHz and debugged various parameters, experiment shows that speed measuring system can achieve accuracy ±0.2 km/h to ±0.3 km/h, which can meet the required accuracy to provide a vehicle speed basis for relevant departments. © 2014 Springer International Publishing Switzerland.

关键词： Uncertainty analysis

来源：评论

学校读者我要写书评

暂无评论

Coexistence study based on TD-SCDMA and WCDMA system

Coexistence study based on TD-SCDMA and WCDMA system

引用

2nd International Conference on Communications, Signal Processing, and systems, CSPS 2013

作者： Li, Li Hong, He Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin China

ISBN: (纸本)9783319005355

Interference is one of key issues for wireless network optimization. How to work with other communication systems is a crucial issue to ensure system performance in 3G networks. This article focuses on the analysis of adjacent channel interference between TD-SCDMA and WCDMA system. The interference mathematical model was discussed, including spurious interference, intermodulation and blocking interference. The minimum coupling loss was obtained by using deterministic algorithm in order to two system coexistence and co-station., the conclusion indicated that the necessary isolation require at least 33.87 and 69 dB, which have certain significance for engineering practice. © 2014 Springer International Publishing Switzerland.

关键词： Code division multiple access

来源：评论

学校读者我要写书评

暂无评论

Black liquor treating of wheat straw pulping using microwave radiation

Black liquor treating of wheat straw pulping using microwave...

引用

3rd International Conference on Chemical Engineering, Metallurgical Engineering and Metallic Materials, CMMM 2014

作者： Cui, Ming Xian Song, Wei Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin China

ISBN: (纸本)9783038351900

This paper describes the method of treating wheat straw pulp black liquor with microwave radiation. The granular activated carbon and CuO are used as a catalyst. Effects of effective factors such as the total amount, ratio, microwave power, time on treating process are studied. The reaction mechanism is also researched. The results indicate that the oxidative decomposition process of lignin or organic pollutants is combined action of activated carbon and CuO absorption-degradation with microwave induced oxidization. This approach is easy to operate, quickly to treat, completely to react and no new pollutants. So it is used to treat black liquor of containing organic pollutes which is hardly degraded. © (2014) Trans Tech Publications, Switzerland.

关键词： Activated carbon

来源：评论

学校读者我要写书评

暂无评论

Design and application of Tunnel kiln temperature control system

Design and application of Tunnel kiln temperature control sy...

引用

IEEE International Conference on Mechatronics and Automation

作者： Yan Wang Bin Liu Changce Si Tianjin Key Laboratory for Control Theory and Applications in Complicated System Tianjin China School of Electrical Engineering Tianjin University of Technology Tianjin China TianjinSIKENUOTechnologyCO. LTD Tianjin china

ISBN: (纸本)9781479970995

Traditionally, PID technology is applied in temperature control system of Tunnel kiln. While, as for its defects of oscillation and overshoot. PID control came to its choke point in practice. In order to get improvement, Active Disturbance Rejection controller (ADRC) is designed to adjust the temperature system in Tunnel kiln. First of all, short introduction of Tunnel kiln parameter, like variations of process control and hardware platform. Then, PLC controller is used to complete the temperature control of Tunnel kiln. Last but most important, we describe the ADRC algorithms specific characteristics of form and composition, which apply to the Tunnel kiln temperature control system. With the improvement, the use of Tunnel kiln will get efficiency of energy and cost will go down at the same time.

关键词： Kilns Heating Ignition Process control

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：