检索结果-内蒙古大学图书馆

4th International Conference on Frontiers of Manufacturing Science and Measuring Technology, ICFMM 2014

作者： Zeng, Ming Chen, Chang Wei Meng, Qing Hao Ren, Hong Lin Ma, Shu Gen Tianjin Key Laboratory of Process Measurement and Control Institute of Robotics and Autonomous Systems School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China

ISBN: (纸本)9783038351924

In traditional biomechanical analysis of upper limb, the high-precision motion data and lifelike human models are needed. It is obvious that those processes are costly and time-consuming. In this paper, a novel and simple combination method based on Kinect-LifeMOD is proposed. Firstly, the Microsoft Kinect (a latest depth sensor) is used to build a cheap and precise motion capture platform. Real-time and reliable key-node rotation data of human skeletons can be acquired by this motion capture system. Next, rotation data is converted into position data as the input of the LifeMOD software which can establish mathematical model of upper limb and execute biomechanical analysis automatically. The experimental results show that the proposed method could achieve the satisfactory performance. © (2014) Trans Tech Publications, Switzerland.

关键词： Biomechanics

来源：评论

学校读者我要写书评

暂无评论

Method of discrete type rotational symmetric triangulation and its applications

引用

Guangdianzi Jiguang/Journal of Optoelectronics Laser 2015年第8期26卷 1526-1535页

作者： Zhang, Xu Fei, Kai School of Mechatronic Engineering and Automation Shanghai University Shanghai China State Key Laboratory of Mechanical System and Vibration Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai China

Traditional laser triangulation measurement has a feature of directional dependence, so the method can lead to the accuracy decrease while measuring the discontinuous surfaces (hole plane, step plane, etc.) or cannot measure them. This paper presents a discrete rotational symmetric triangulation system, where the incident laser is the rotation axis, and the emergent light (lenses and mirrors) and receiving sensor have the characteristic of circular pattern. Firstly, system's constraint model and light point & height mapping model are established with the Scheimpflug condition. Secondly, this paper simulates the imaging feature in the condition of different depths, analyzes the performance of different subjects' surfaces when the surface is tilted or shaded, and verifies the superiority that the method can overcome the directional dependence. Finally, the paper establishes the prototype system and conducts the single-point and step plane experiments. Comparing the contact measurement, the experimental results show that the prototype system can measure the step plane well and has a long measurement range with 0.027 mm accuracy at least. ©, 2015, Board of Optronics Lasers. All right reserved.

关键词： Triangulation

来源：评论

学校读者我要写书评

暂无评论

Erratum to: Robust adaptive synchronization of general dynamical networks with multiple delays and uncertainties

引用

Pramana 2016年第6期86卷 1413-1413页

作者： LU, YIMING HE, PING MA, SHU-HUA LI, GUO-ZHI MOBAYBEN, SALEH Laboratory of Train Network Department of Train Control Tech. Research Center of Product & Tech. CRRC TANGSHAN CO. LTD Tangshan People’s Republic of China School of Information Science and Engineering Northeastern University Shenyang People’s Republic of China School of Automation and Electronic Information Sichuan University of Science and Engineering Zigong People’s Republic of China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin People’s Republic of China

来源：评论

学校读者我要写书评

暂无评论

Study on the control system of grinding the nozzle of twin flapper-nozzle valve

Study on the control system of grinding the nozzle of twin f...

引用

International Conference on Machine Tool Technology and Mechatronics engineering, ICMTTME 2014

作者： Yang, Shu Zhen Qian, Rui Bai, Yu Jie Shanghai Second Polytechnic University Shanghai China Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9783038352464

In this paper, neural network and grey fuzzy control technology are applied in Abrasive Flow Machining(AFM) to grind the mico-hole in th nozzle of the twin flapper-nozzle valve. An intelligent control system with fine tuning working pressure is established that can predict the process parameters automatically before machining and forcast the flow to adjust the working pressure in *** result of experiment indicates that this system has high level of intelligent and can get very high machining accuracy. © (2014) Trans Tech Publications, Switzerland.

关键词： Neural networks

来源：评论

学校读者我要写书评

暂无评论

Application of Grey Model in Intelligent-Control of Micro-hole Abrasive Flow Machining 4

Application of Grey Model in Intelligent-Control of Micro-ho...

引用

4th International Workshop of Advanced Manufacturing and automation, IWAMA 2014

作者： Yang, Shu Zhen Jin, Wei Bai, Yu Jie Shanghai Second Polytechnic University Shanghai China Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9783038352532

In this paper, a control system based on the prediction of processing flow in Abrasive flow machining is designed. In this system, flow is predicted by an improved GM(1,1) model in conformation of background value. Combined with fuzzy control system, it can adapt the pressure to meet the processing requirement automatically. Experiments proved that the improved GM(1,1) model can predict the processing flow accurately, and the fuzzy control system based on grey prediction can improve the machining accuracy of micro-hole AFM effectively. © (2014) Trans Tech Publications, Switzerland.

关键词： Fuzzy control

来源：评论

学校读者我要写书评

暂无评论

Optimized non-reciprocating tripod gait for a hexapod robot with epicyclic-gear-based eccentric paddle mechanism

Optimized non-reciprocating tripod gait for a hexapod robot ...

引用

IEEE International Conference on robotics and Biomimetics

作者： Jun Zou Huayan Pu Yayi Shen Yi Sun Wenchuan Jia Shugen Ma Jun Luo Shaorong Xie School of Mechatronic Engineering and Automation Shanghai University 149 Yanchang Road Shanghai China Department of Robotics Ritsumeikan University525-8577 Shiga Japan

ISBN: (纸本)9781467396769

A novel eccentric paddle mechanism based on the epicyclic mechanism (ePaddle-EGM) has been proposed to enhance the mobility of amphibious robot for multi-environments tasks with diverse locomotion gaits, including a novel non-reciprocating leggedgait. In this study, an optimized non-reciprocating planning method by planning the posture angle of the supporting paddle is focused to improve energetic efficiency of this gait. Relationship between the posture angle of the supporting paddle and actuation forces on the paddle is analyzed in the state of equilibrium. Standing on the ground vertically is found to be an optimal posture for the supporting paddle to achieve minimum quadratic sum of the actuation forces. The planning method that considers the optimal posture angle of the paddle and the stride of the gait is established and verified in simulations. Calculated specific resistance confirms that the proposed method can improve the energetic efficiency of the non-reciprocating legged gait.

关键词： proposed enhance mobility

来源：评论

学校读者我要写书评

暂无评论

Analysis and experiments of the arc heating for fiber fused biconical taper technology

引用

Zhongguo Jiguang/Chinese Journal of Lasers 2015年第3期42卷 0305003-1-0305003-1-0305003-8页

作者： Zhang, Wei Rong, Weibin Yang, Wei Wang, Lefeng Sun, Lining State Key Laboratory of Robotics and System Harbin Institute of Technology HarbinHeilongjiang150080 China School of Electrical Engineering and Automation Harbin Institute of Technology HarbinHeilongjiang150001 China

The heating temperature is one of the key factors in the fiber fused biconical taper manufacture, which can affect the component performance. In order to improve the temperature stability and controllability in the heating region, the high-voltage arc heating device is presented and arc heating, heating region temperature and fiber preheating are studied. The high-frequency high voltage power source, in which the current and frequency can be adjusted independently, and electrodes are designed. The closed-loop controls of the voltage and current are applied to ensure the success of the arc ignition and the stability of the arc discharge current, and the discharge process is analyzed. The temperature detection device in which the infrared camera is adopted to measure the heating region temperature by the ceramic rod is designed. Through the analysis of experimental data, the relationships among the frequency, arc control voltage, arc current, heating distance and arc region temperature are determined. According to experiments and computation results, the temperature of the arc center region can reach 1635℃ within the stability of 2.37℃. Based on the established heating model for fine fibers with the diameter of 80 μm, the preheating time is computed by the transient analysis of the ANSYS software. It is shown that the temperature of the heating region can reach the stability by 25 s. ©, 2015, Science Press. All right reserved.

关键词： Temperature measurement

来源：评论

学校读者我要写书评

暂无评论

The monitoring system for stability of CNC machining based on cDAQ and labVIEW 4

The monitoring system for stability of CNC machining based o...

引用

4th International Workshop of Advanced Manufacturing and automation, IWAMA 2014

作者： Meng, Man Zhang, Wen Jun Wang, Peng Chong Niedenzu, Denis Tian, Ying Zhong School of Mechatronic Engineering and Automation Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai University Shanghai China Department Mechanical Engineering Friedrich-Alexander-Universitat Erlangen-Nurnberg Erlangen Germany

ISBN: (纸本)9783038352532

In recent years, researching the stability of the CNC machining process is a hotpot in CNC industry. Based on cDAQ and lab VIEW, online monitoring system is presented, meanwhile, both software structure and hardware structure are introduced in detail. Researches show that vibration and pressure are the main factors for the quality of the flatness. By studying the relative vibration between the spindle and the platform in the Z axis direction, as well as the shifty pressure that tool works on the flatness of the workpiece, four experiments are designed in this paper under different technological conditions including free moving, Axial Depth of cut, speed and feed speed, which verify the reliability of the online monitoring system. © (2014) Trans Tech Publications, Switzerland.

关键词： Monitoring

来源：评论

学校读者我要写书评

暂无评论

Modeling and analysis of synchronized scanning triangulation

引用

Guangdianzi Jiguang/Journal of Optoelectronics Laser 2015年第2期26卷 295-302页

作者： Zhang, Xu Fei, Kai Tu, Da-Wei School of Mechatronic Engineering and Automation Shanghai University Shanghai China Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai China State Key Laboratory of Mechanical System and Vibration Shanghai China

Synchronized scanning triangulation inserts the scanning mirrors in the projected light path and the received light path, thus the changed angles for the projected light and the received light are the same when the scanning mirrors are rotated. This synchronized scanning mechanism expands the measurement field and is adopted in the large distance measurement. In the model of traditional synchronized scanning triangulation measurement system, the thickness of rotated mirror is assumed to be zero and the trajectory of the 3D scanning point is modeled as a circle. However, this simplified assumption deteriorates the precision of the system. In this paper, the thickness of the rotated mirror besidesf other geometry parameters is considered. The 3D measured point is established with the 14 parameters, which describe the position and pose of different parts. Through the simulation, we find that the system's error could achieve 200 mm, when the thickness of the rotating mirror is 1 mm. This error can not be omitted for measuring general objects. In addition, the model's 3D point for the same pixel position is a circle with the moving center instead of a constant position. This model describes the trajectory more precisely than traditional model. Finally, the prototype system is designed and the experimental results show that the method is feasible. ©, 2015, Board of Optronics Lasers. All right reserved.

关键词： Scanning

来源：评论

学校读者我要写书评

暂无评论

Measurement strategies in optical 3-D surface measurement with focus variation

Measurement strategies in optical 3-D surface measurement wi...

引用

11th IMEKO TC14 Symposium on Laser Metrology for Precision Measurement and Inspection in Industry, LMPMI 2014

作者： Tian, Yingzhong Weckenmann, Albert Hausotte, Tino Schuler, Alexander Bin, H.E. School of Mechatronic Engineering and Automation Shanghai Key Laboratory of Manufacturing Automation and Robotics Shanghai University China Department of Quality Management and Manufacturing Metrology University Erlangen-Nuremberg Germany Institute of Manufacturing Metrology University Erlangen-Nuremberg Germany

ISBN: (纸本)9781632667311

Focus variation is an optical contact-free method that allows the measurement of three-dimensional surface metrology using optics with limited depths of field and vertical scanning. It was documented in the ISO 25178-6 first time in *** one method of image capture, it has very crucial influence to get an excellent quality image that some key parameters are selected correctly for different workpiece. Those key parameters are including the exposure time, contrast, filters and so on. In this paper, a few of applications were selected to demonstrate the capabilities of the system using different measurement parameters including measurements on cutting-insert tool, stainless steel ball, stepped workpiece and VDI standard workpiece with silver colour surface. Some principles were concluded for optical three-dimensional surface measurement with focus variation after comparing the practical results with different parameters, serving as measurement strategies.

关键词： Surface measurement

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：