检索结果-内蒙古大学图书馆

Research on USB Communication in the Compiled-typed NC system

10th Asia-Pacific Conference on Materials Processing (APCMP 2012)

作者： Zhou, Liang Ren, Yan Hai Cao, Gang Liao, Zhi Rong State Key Laboratory of Robotics and System (HIT) Hei Longjiang Province China Harbin Institute of Technology Hei Longjiang Province China Harbin Power Bureau Hei Longjiang Province China

ISBN: (纸本)9783037853993

The compiled-typed NC system compiles NC program into object codes and sends them to slave computers. The object codes generated is a large amount of data. To ensure the data transmission fast and real-time, USB communication is adopted and researched in this paper. The design of USB driver program and communication program in the upper computer and slave computers is mainly introduced.

关键词： USB driver program communication mode NC system

来源：评论

学校读者我要写书评

暂无评论

A method for unpowered space robot safety rendezvous, with non-cooperative spacecraft

A method for unpowered space robot safety rendezvous, with n...

引用

2012 9th ieee International Conference on Mechatronics and Automation, ICMA 2012

作者： Zhang, Fuhai Chen, Hongwei Hua, Lei Fu, Yili Wang, Shuguo Guo, Bin State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China Postdoctoral Flow Station of Materials Science and Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9781467312776

Aiming at rendezvous path planning of free floating space robot(the chaser satellite) in outer space, the path planning method to ensure safe approaching the non-cooperative space target based on the orbit mechanical equation is proposed. The whole rendezvous path planning strategy and safety principle of rendezvous path planning in ultimate approaching stage of free floating space robot are researched;Based on orbit mechanical equation, the moving ellipse locus of free floating space robot is generated using the safety principle to approach the non-cooperative space target in ultimate approaching stage. The method realizes that the space robot system approaches the spinning non-cooperative space target in free floating work mode, and the robot can escape safely when the subsequent work could not be normally completed. © 2012 ieee.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

Development of high integrated 2-DOF joint module for space application

Development of high integrated 2-DOF joint module for space ...

引用

2012 9th ieee International Conference on Mechatronics and Automation, ICMA 2012

作者： Shi, Shicai Li, Rong Ni, Fenglei Liu, Hong State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang Province China Department of Automobile Heilongjiang Institute of Technology Harbin Heilongjiang Province China

ISBN: (纸本)9781467312776

This paper presents a high integrated 2-DOF joint module for space application which consists of two modular joints and a control box. The axes of the two joints are orthogonal and intersectant. Based on the TDJM, some new version manipulators with different configuration could be developed with only a little modification in short time, such as four-DOF manipulator or six-DOF manipulator. The TDJM have high reliability with full redundant drive, sensors, power, communication and control system. A big central hole in the modular joint was designed for the placement of the cables in the TDJM, which prevents them from the damage of high temperature, radiation in the space environment and the motion of the joints. A test table was developed to measure the performances of the TDJM. © 2012 ieee.

关键词： Manipulators

来源：评论

学校读者我要写书评

暂无评论

Laser cutting ZrO2 ceramic with controlled fracture technique

Laser cutting ZrO2 ceramic with controlled fracture techniqu...

引用

2012 9th ieee International Conference on Mechatronics and Automation, ICMA 2012

作者： Yang, Lijun Wang, Yang Tian, Zhongguo State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang Province China Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of Education Harbin Institute of Technology Harbin Heilongjiang Province China

ISBN: (纸本)9781467312776

The research about laser cutting technology based on controlled fracture method has great potential to cutting ceramics. The paper investigate the controlled fracture technology to ZrO2 ceramic irradiated with Nd:YAG laser. In the experiment, laser energy produces a thermal stress that cause ceramic to separate along the moving path of laser beam. Graphite coated ceramic surface to improve the absorption rate for laser radiation. Optical microscope photographs and SEM of the separation surface are obtained to examine the surface quality. The surface qualities of ceramic obtained by laser and mechanical cutting are compared. Fracture propagation mechanism is studied by examining the temperature and stress fields using finite element software ANSYS12.1. The results show that good cutting quality of ceramic can be acquired by continuous Nd:YAG laser cutting with controlled fracture. © 2012 ieee.

关键词： Fracture

来源：评论

学校读者我要写书评

暂无评论

THEORY ANALYSIS OF A NEW ABSOLUTE POSITION SENSOR BASED ON ELECTROMAGNETISM

THEORY ANALYSIS OF A NEW ABSOLUTE POSITION SENSOR BASED ON E...

引用

International Conference on Automatic Control and Artificial Intelligence

作者： Zijian Zhang Fenglei Ni Hong Liu Minghe Jin State Key Laboratory of Robotics and System Harbin Institute of Technology

ISBN: (纸本)9781627481205

Rotating angle of joint is an important factor in control field of robot arm. In the paper, a new sensor to test the absolute rotating angle of robot arm joints is designed. Firstly, structure of the magnetic field emitter is presented. Secondly, the generating process of signals sine and cosine is introduced. Then, working principle of the senor is described. At last, a new encoder is designed. The emitter working together with the encoder can test the absolute rotating angle and the calculation process is given in the paper. At the end of the paper, advantages of the sensor are listed.

关键词： Absolute position sensor Magnetic sensor Diamagnetic material Robot control

来源：评论

学校读者我要写书评

暂无评论

Influence of amplitude on locomotor batoid

Influence of amplitude on locomotor batoid

引用

第十一届全国水动力学学术会议暨第二十四届全国水动力学研讨会并周培源诞辰110周年纪念大会

作者： WU Zhi-jun CHEN Wei-shan State Key Laboratory of Robotics and System Harbin Institute of Technology

A bionic batoid model is developed and used to study how the amplitudes of the pectoral fins affect the computational model's propulsive *** design of the bionic model is based on a detailed analysis of pectoral fins locomotion of natural batoid *** pectoral fins of bionic model are made to execute the kinematics resembling the pectoral fins of a biological fish during rajiform swimming,which makes the fluid-structure interaction as similar as the biological *** simulations are conducted at 5 different amplitude indexes from 0.08 to 0.32 with undulating frequency at f=2.2 Hz and wave number of *** and dynamic parameters are recorded in three dimensions during the *** simulation results show that the swimming velocity of bionic batoid model increases with the increasing of amplitude value in general and also indicate that the outstanding steady forward swimming of bionic batoid emerges at the amplitude of 0.14 as the biological batoid choose.

关键词： Bionic batoid Pectoral fins Amplitude Dynamic simulation

来源：评论

学校读者我要写书评

暂无评论

STUDY ON A NEW LINEAR ULTRASONIC MOTOR WITH BENDING PZT ELEMENTS

STUDY ON A NEW LINEAR ULTRASONIC MOTOR WITH BENDING PZT ELEM...

引用

2012全国压电和声波理论及器件技术研讨会

作者： Xiao-hui YANG Wei-shan CHEN Ying-xiang LIU Jun-kao LIU State Key Laboratory of Robotics and System Harbin Institute of Technology

A new linear ultrasonic motor using the 1st longitudinal and the 4th bending vibration modes of a bolt-clamped type transducer has been proposed and *** new motor with two feet employed only the bending PZT *** groups of PZT elements are clamped between the two exponential shape horns and the flange *** driving feet are located in the same side of the *** working principle of the proposed motor are *** the fabrication of a prototype,its admittance characteristics are measured using an impedance analyzer and the vibration modes are tested by a scanning laser Doppler ***,the mechanical ability of the prototype is tested.

关键词： Ultrasonic motor Bending PZT elements Admittance Vibration characteristics

来源：评论

学校读者我要写书评

暂无评论

Research on the Principle of Compiled-typed NC system

引用

10th Asia-Pacific Conference on Materials Processing (APCMP 2012)

作者： Zhou, Liang Ren, Yan Hai Lang, Yue Dong Liao, Zhi Rong State Key Laboratory of Robotics and System (HIT) Hei Longjiang Province China Harbin Institute of Technology Hei Longjiang Province China Beijing Aerospace Control Instrument Research Institute Beijing China

ISBN: (纸本)9783037853993

To solve the conflict between OS's real time property and NC system's open and universal property [1], a compiled-typed NC system is advanced based on analysis and research of the structure of modern NC systems. This kind of system can diminish the affection of the real-time OS's respond precision to machining with high speed and high precision and improve the frequency of interpolation sampling and respond precision. Motion control experiment and parametric curve direct interpolation experiment are finished by bonnet polishing machine tool with compiled-typed NC prototype system, proving that working principle of compiled-typed NC system is correct and validity.

关键词： NC system Compile USB ARM Real-time

来源：评论

学校读者我要写书评

暂无评论

system design of a dexterous lightweight robot arm with remote control

引用

High Technology Letters 2012年第3期18卷 248-255页

作者： Li, Tian Sun, Kui Jiang, Zainan Xie, Zongwu Liu, Hong State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001 China

This paper presents a novel remote controlled dexterous robot arm with 6 degrees of freedom (DOF). As a highly integrated mechatronics system, sensors and their signal processing system are integrated inside each joint. To lighten the weight, almost all mechanical parts are made of aluminum and the robot control system is placed outside. The modular concept is adopted during the robot design process for time and cost saving. Considering the much greater torque acted on the two shoulder joints, the joint shells are strengthened in the design to increase joint stiffness and suppress system vibration. Meanwhile, to simplify the maintenance, a new spring pins electronic connector is designed to disassemble every joint, connector and link independently without cutting any cables. The teleoperation technology enables the robot to offer more convenient service definitely for people's daily life. Virtual reality technology is used to solve the time delay problem during teleoperation. Finally, two typical daily chore experiments are implemented to prove the manipulation ability of the dexterous robot arm. Copyright © by HIGH TECHNOLOGY LETTERS PRESS.

关键词： Robotic arms

来源：评论

学校读者我要写书评

暂无评论

EEG feature extraction and pattern recognition during right and left hands motor imagery in brain-computer interface

EEG feature extraction and pattern recognition during right ...

引用

2012 5th International Conference on Biomedical Engineering and Informatics, BMEI 2012

作者： Liu, Cheng Wang, Hailing Pu, Hui Zhang, Yi Zou, Ling School of Information Science and Engineering Changzhou University Changzhou Jiangsu 213164 China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang 150001 China

ISBN: (纸本)9781467311816

At present, it is an important issue to obtain accurate classification of EEG signal in brain-computer interface. We collected the EEG data which are recorded at a sampling rate of 250Hz by EGI-64 scalp electrodes placed according to the international 10/20 system. Firstly, discrete wavelet transform method is used to decompose the average power of the channel C3/C4 and P3/P4 in left and right hands imagine movement during the some experimental period of time. The reconstructed signal of approximation coefficient A6 on the sixth level is selected to build up a feature signal. Secondly, the performances by Fisher Linear Discriminant Analysis and Support Vector Machine methods are compared. The final classifications results show that correct classification rate by Support Vector Machine is higher and gain an ideal classification results, which can establish a basis of real-time BCI application. © 2012 ieee.

关键词： Feature extraction

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：