Research on Tube Bending Simulation of the Head Rotating Bending Machine

2013 ◽  
Vol 441 ◽  
pp. 452-455
Author(s):  
Cun Feng Kang ◽  
Chao Zhang ◽  
Chun Min Ma ◽  
Zhi Wei Lu
Keyword(s):  
Complex Structure ◽  
Testing Time ◽  
Tube Bending ◽  
Key Technology ◽  
New Type ◽  
Rotating Bending ◽  
Working Parameters ◽  
Open Gl ◽  
Coordinates Transformation ◽  
New Machine

Tube has a complex structure in space, in order to machining tubes of different radius and avoid interference, a new type of Triz bending machine is developed, which has up to eight dies by moving and rotating the head of the machine. The key technology of tube coordinates transformation is solved by the vector algorithm. For the springback problem, a compensation is add to the final working parameters, which can reduce the testing time and the quantity of scraps. Finally the tube bending simulation system for the new machine is developed based on Visual Studio 2010 and Open GL.

Design for New Type Tobacco Sewing Machine Head

2014 ◽  
Vol 687-691 ◽  
pp. 300-303
Author(s):  
Li Zhang ◽  
Ting You Wang ◽  
Hong Bin Liu
Keyword(s):  
Simple Structure ◽  
Leaf Damage ◽  
Analytic Method ◽  
Sewing Machine ◽  
Tobacco Leaf ◽  
Existing Problems ◽  
Damage Rate ◽  
New Type ◽  
Drawing Method ◽  
New Machine

In order to reducing the worker's labor intensity in tobacco sewing, a new machine adoption with single thread sewing technology was developed. Through analyzing the existing problems in sewing machine and the tobacco damage situation, using drawing method, analytic method and other methods, the shape of the sewing component, hook line components and other mating parts were designed. The results show that the machine has the advantages of simple structure, controllable sewing speed, adjustable leaf thickness and quantity. And the tobacco leaf damage rate is low. The comprehensive efficiency in tobacco leaf knitting with this machine is four times higher than that with hand knitting. Its application prospect is considerable.

scholarly journals A Novel Amperometric Biosensor Based on Poly(allylamine hydrochloride) for Determination of Ethanol in Beverages

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6510
Author(s):  
Oana Maria Istrate ◽  
Lucian Rotariu ◽  
Camelia Bala
Keyword(s):  
Good Accuracy ◽  
Sol Gel ◽  
Storage Conditions ◽  
Applied Potential ◽  
Screen Printed Electrode ◽  
Response Range ◽  
New Type ◽  
Allylamine Hydrochloride ◽  
Working Parameters

Herein, we report on a new type of ethanol biosensor based on a screen-printed electrode modified with poly(allylamine hydrochloride). The alcohol dehydrogenase was immobilized on the surface of the sensor using the sol–gel matrix. Working parameters such as applied potential, pH, NAD+ concentration, storage conditions were optimized. A response range between 0.05 and 2 mM was found with a sensitivity of 13.45 ± 0.67 µA/mM·cm2 and a detection limit of 20 µM. The developed biosensor was used to detect ethanol in commercial beverages with good accuracy.

A Hybrid Model of Cross-Domain Authentication for Password Synchronization

2011 ◽  
Vol 474-476 ◽  
pp. 729-734
Author(s):  
Qiu Yu Zhang ◽  
Zhi Peng Cai ◽  
Zhan Ting Yuan ◽  
Feng Man Miao
Keyword(s):  
Distributed Computing ◽  
Theoretical Analysis ◽  
Hybrid Model ◽  
Transport Protocols ◽  
Key Technology ◽  
Cross Domain ◽  
New Type ◽  
Hybrid Cross

Cross-domain authentication is a key technology used in distributed computing, however, it isn’t perfect. In this paper, a new type of hybrid cross-domain authentication model is proposed to make up its shortcoming in safety, scalability and password synchronization. In this model, advantages of Kerberos and SAML in cross-domain authentication process are combined, and it mixed password transport protocols is adopted to achieve password synchronization. Theoretical analysis shows it can enhance the security and scalability of cross-domain authentication, the efficiency of cross-domain authentication is also improved as the attainment of password synchronization.

Study on Trispectrum Characteristics of MR Damper in Vibration Processes

2011 ◽  
Vol 211-212 ◽  
pp. 285-289
Author(s):  
Fu Sen Wu ◽  
Yi Jian Huang ◽  
Shan Xu
Keyword(s):  
Time Series ◽  
Working Conditions ◽  
Dynamic Characteristics ◽  
Mr Damper ◽  
Ar Model ◽  
Vibration Process ◽  
New Type ◽  
Non Gaussian ◽  
Working Parameters ◽  
Optimum Working

In order to find out a new type of MR damper for block making machine, the signals of displacement in the vibration process during the test are collected and the time series AR model of trispectrum for analyzing the dynamic characteristics of the MR damper is built. It turns out that , in different working conditions, slices of trispectrum are applied to obtain the signal’s non-Gaussian, nonlinear amplitude-frequency characteristics which are very important for us to select the optimum working parameters of the MR damper.

Research on Key Technology of Webpage Tampering Prevention

2014 ◽  
Vol 644-650 ◽  
pp. 2755-2758
Author(s):  
Li Zhao ◽  
Xiang Ling ◽  
Feng Deng
Keyword(s):  
Tampering Detection ◽  
Key Technology ◽  
Detection Technology ◽  
Prevention System ◽  
New Type ◽  
Detection Technologies

Webpage tampering prevention system is a security protection means of website to prevent from hacker’s unauthorized update to webpage. This paper deeply researches the key technology of webpage tampering prevention system, i.e., poll tampering detection technology, core embedding technology and file filtering drive technology, the algorithm of three prevailing tampering prevention detection technologies is realized on the basis of apache platform, they are integrated together to form an exclusive and perfect new type tampering prevention system.

Motion analysis of screw drive in-pipe cleaning robot

2022 ◽  
pp. 095440622110612
Author(s):  
Zheng Zhang ◽  
Linghui Hu ◽  
Xiuhong Li ◽  
Xinyu Hu
Keyword(s):  
Complex Structure ◽  
Stable Operation ◽  
Force Analysis ◽  
Screw Drive ◽  
Curved Pipes ◽  
Cleaning Robot ◽  
Kinematics Modeling ◽  
Simulation And Experiment ◽  
New Type ◽  
Cleaning Robots

In-pipe cleaning robots often need to carry cleaning tools, and their tails are connected with cables such as water pipes and air pipes. Especially when cleaning vertical straight pipes and curved pipes, a greater traction is required. Therefore, a new type of screw drive in-pipe cleaning robot was designed in this paper. The robot solves the problems of small traction, complex structure, and unstable motion of the in-pipe cleaning robot. The kinematics modeling was carried out on the screw drive in-pipe cleaning robot’s screw module for generating traction, and the force analysis was performed on this basis. The function model of the torque, air pressure, and traction of the screw module was established, which was verified by the simulation and experiment. The results show that the screw in-pipe cleaning robot has a large traction, stable operation, and can be well adapted to the vertical straight pipes and curved pipes.

Self-assembling of three rare structurally various homomultinuclear CuII complexes derived from a bis(salamo)-based multioxime ligand

2021 ◽  
Vol 77 (5) ◽  
pp. 848-860
Author(s):  
Peng Li ◽  
Ting Zhang ◽  
Li-Li Li ◽  
Wen-Kui Dong
Keyword(s):  
Complex Structure ◽  
Three Dimensional ◽  
Monoclinic Space Group ◽  
Space Group ◽  
X Ray Crystallography ◽  
Self Assembling ◽  
Elemental Analyses ◽  
New Type ◽  
Spiral Structures ◽  
Solvent Molecules

A family of rare structurally different homometal multinuclear CuII bis(salamo)-based complexes, [Cu4(L)2(MeOH)2](ClO4)2·2MeOH (1), [Cu4(L)2(EtOH)2](NO3)2·2EtOH (2) and [Cu2(HL)(EtOH)Br2]·CHCl3 (3), has been successfully synthesized by the reactions of cupric salts with a bis(salamo)-based multidentate chelate ligand (H3 L). The salamo-based ligand [R-CH=N—O—(CH2) n —O—N=CH—R] is a new type of salen-based analog. Complexes (1) and (2) are isostructural structures, and crystallize in monoclinic space group P21/n with centrosymmetric spiral structures, where the main structures contain two fully deprotonated ligand (L)3− units, a charged tetranuclear CuII folding center and two coordinated solvent molecules. Complex (3) crystallizes in monoclinic space group Cc and consists of two CuII cations, one incompletely deprotonated ligand (HL)2− unit and one coordinated ethanol molecule, and forms a novel homo-binuclear CuII complex structure due to Br− counter anions. Complexes (1)–(3) have zero-dimensional cluster-based structures and are further assembled into three-dimensional frameworks via intermolecular interactions. Because of the different solvents and counter anions which have a significant influence on the structures of complexes (1)–(3), the interactions were quantitatively evaluated by Hirshfeld surfaces analyses. Complexes (1)–(3) have been characterized by elemental analyses, IR spectra, UV–vis spectra and X-ray crystallography analyses. In addition, fluorescence properties are evaluated and DFT calculations are performed.

scholarly journals Design and Isokinetic Training Control Method of Leg Press Training Device

2019 ◽  
Vol 9 (14) ◽  
pp. 2822
Author(s):  
Hongfei Yu ◽  
Hongbo Wang ◽  
Yaxin Du ◽  
Xinyu Hu ◽  
Ziyu Liao
Keyword(s):  
Resistance Training ◽  
Control Method ◽  
Complex Structure ◽  
The Elderly ◽  
Training Device ◽  
Machine Model ◽  
Single Function ◽  
Group A ◽  
New Type ◽  
Training Control

Lower-limb function in elderly people gradually degenerates with age, and poor rehabilitation conditions preventing the elderly from receiving scientific rehabilitation training result in the decline of social labor force and the increased economic burden of the elderly. Aiming at the characteristics of the single function and the complex structure of an existing telescopic leg trainer combined with the needs of the application group, a new type of leg-stretching training device with multiple training modes for lower extremity extension and flexion of the elderly is proposed. A new mechanical structure and electrical system is designed. At the same time, the anti-resistance training man–machine model is analyzed, aiming at the isokinetic resistance training mode, and a training controller strategy based on a fuzzy synovial algorithm is proposed. Finally, the feasibility of the designed controller strategy and the proposed leg training device are verified by prototype experiments, which will guide further research.

Research on Fault Diagnosis System for Aircraft Hydraulic Power Carts Based on Fuzzy Diagnosis Theory

2012 ◽  
Vol 220-223 ◽  
pp. 607-610
Author(s):  
Wei Qiang Zhao ◽  
Yong Xian Liu ◽  
Mo Wu Lu
Keyword(s):  
Fault Diagnosis ◽  
High Reliability ◽  
Complex Structure ◽  
Hydraulic Power ◽  
Diagnosis System ◽  
Diagnosis Method ◽  
New Type ◽  
Fault Diagnosis System ◽  
Fault Mode ◽  
Fuzzy Diagnosis

Aircraft hydraulic power carts are important aviation support equipment. Because of their complex structure they have high failure rate. Therefore fault diagnosis system for hydraulic power carts is necessary to ensure high reliability and maintainability for hydraulic power carts. This paper presents a diagnosis method based on fuzzy diagnosis theory in the developing process of a new type of hydraulic power carts. The fault Symptom, critical value and fault causes are established based on the research of fault mode for hydraulic power carts. And also the mathematical model of fault diagnosis for hydraulic power carts is established based on fuzzy diagnosis theory. The practical test results and fault diagnosis instances show that with this fault diagnosis system fast fault diagnosis for hydraulic power carts was carried out successfully.

A New Type of ECG Signal Sample and Analysis System

2011 ◽  
Vol 225-226 ◽  
pp. 949-952
Author(s):  
Xuan Chao Liu ◽  
Xiao Li Feng ◽  
Pei Pei Li
Keyword(s):  
Heart Disease ◽  
Human Life ◽  
Complex Structure ◽  
Research Result ◽  
High Price ◽  
Ecg Signal ◽  
New Type ◽  
Signal Sample ◽  
Analysis System ◽  
Electrocardiogram Ecg

With the change of the human life style, heart disease has become one of the main diseases threatening human life and health. Promptly, accurately and completely achieving electrocardiogram (ECG) signal has vital significance for discovering and treating heart disease as soon as possible. However, the traditional professional electrocardiograph has complex structure, high price, and it is not suitable to carry on the popularization application. Therefore, this article proposes a new type of ECG signal sample and analysis system based on a personal computer, which realizes acquisition and analysis function through the LabVIEW programming. The research result shows that it has not only perfect function, convenient operation, easy to use, but also low price, and it is very suitable to universal application. So, it has very good practical value.

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