Design of Pulsed Jet On-Off Valve Based on Giant Magnetostrictive Actuator

Structure Selection ◽

Pulsed Jet ◽

Advantages And Disadvantages ◽

Speed Response ◽

Pulse Jet

The pulsed jet device is a kind of device that can jet rapidly with micro flux. Present jet methods cannot fulfill the requirements of a large-flux, high-speed and stability in some applications. Combining with the character of pulsed jet device and the advantage of high-speed on-off valve, a new kind of micro-flux jet device —pulse jet on-off valve was designed. The basic structure and the working theory of the device were introduced first; then the valve was studied in detail on the basis of the requirements of jet speed and flux, including structure selection, rated pressure computation, dimension designing etc.. The advantages and disadvantages of actuators driven by electromagnetic, piezoelectric and giant magnetostrictive material (GMM) were compared, then GMM was chosen to drive the pulsed jet on-off valve. The flux and jet speed response experiments demonstrated that the pulsed jet on-off valve based on giant magnetostrictive actuator (GMA) could fulfill the requirements of application.

Design, Modeling and Simulation of an Innovation Pneumatic High Speed on-Off Valve Based on Giant Magnetostrictive Material

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.422.243 ◽

2011 ◽

Vol 422 ◽

pp. 243-249 ◽

Cited By ~ 1

Author(s):

Feng Zhang ◽

Hao Liu ◽

Guo Liang Tao ◽

Wei Zhong

Keyword(s):

Cantilever Beam ◽

High Speed ◽

Mechanical Vibration ◽

Fast Response ◽

High Frequency Response ◽

Dynamic Performances ◽

Large Flow

Based on giant magnetostrictive material, a new design of pneumatic high speed on-off valve is presented in this paper. To settle the problem of balancing fast response and large flow, a cantilever beam is employed as both displacement amplifier and valve spool in the innovation structure of the valve. The dynamic model of the valve is established by analyzing the dynamic performances of the giant magnetostrictive actuator and the cantilever beam, based on the theories of electromagnetism and the mechanical vibration. A simulation on this model is carried out to investigate the performance of the valve. Results of the simulation show that the new pneumatic high speed on-off valve is able to achieve the goal of high frequency response, while satisfying the requirement of a large flow.

Study on Giant Magnetostrictive Material with Transducer Finite Element Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.700.3 ◽

2013 ◽

Vol 700 ◽

pp. 3-6

Author(s):

Jia Deng

Keyword(s):

Mathematical Model ◽

Finite Element ◽

Intensity Change ◽

Force Model ◽

Element Analysis ◽

Mechanical Coupling ◽

Output Displacement ◽

Magnetostrictive Actuator

Giant magnetostrictive transducer in the work show strong magnetic mechanical coupling characteristics and nonlinear characteristics, its magnetic state and mechanical state influence each other, coupling process is very complicated, this paper according to the giant magnetostrictive material features, combined with the magnetic domain theory, establish the super magnetostrictive micro displacement actuator model, Explore stress and magnetic field changes, GMM inner magnetic strength change, and the change of strain. Join based on giant magnetostrictive actuator structure and working principle, from the principle of physics, mathematics phenomenological theory Angle to establish the combination of the mathematical model of giant magnetostrictive actuator: According to the actuator output power and output displacement, combined with the equation of motion establish output displacement - output force model. According to an internal magnetic induction intensity change, establish actuator induction voltage model; According to J-A model magnetization model. By using the finite element theory and the Hamilton principle of minimum potential energy, energy conservation principle to this mathematical model, and analyze the result.

Study on Giant Magnetostrictive Material with Design and Simulation of Displacement Magnifying Mechanism

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.675.219 ◽

2013 ◽

Vol 675 ◽

pp. 219-226 ◽

Cited By ~ 1

Author(s):

Fan Zeng ◽

Jing Jun Lou ◽

Shi Jian Zhu

Keyword(s):

Maximum Stress ◽

Vibration Modes ◽

Output Displacement ◽

Harmonic Response ◽

Statics And Dynamics ◽

Output Characteristics ◽

The Relationship

In order to make full use of advantages of giant magnetostrictive material and to improve output characteristics of giant magnetostrictive actuator, displacement magnifying mechanism is designed based on flexible hinges. The design parameter of the flexible hinges and strength of material of flexible hinges are calculated. Based on the analysis and comparison, the statics and dynamics analysis was carried on by analytic method and ANSYS12.1 software,the input stiffness, magnifying multiple and the relationship between output displacement and load are calculated,and the stress analysis shows that the maximum stress of magnifying mechanism is less than the maximum allowable stress of materials. The resonance frequency,vibration modes and harmonic response of the mechanism were resulted by Finite element method, and the dynamics parameters of system are get.

Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) ◽

Modeling, design and control of high-speed powerful solenoid based on giant magnetostrictive material

10.1109/wcica.2004.1343163 ◽

2004 ◽

Cited By ~ 2

Author(s):

Zhifeng Tang ◽

F. Lv ◽

Zhanqin Xiang ◽

Mingfan Li

Keyword(s):

High Speed ◽

And Control

Giant Magnetostrictive Material Actuator Based Active Vibration Control-a Modified α - LMS Algorithm

Materials Science Forum ◽

10.4028/www.scientific.net/msf.546-549.2219 ◽

2007 ◽

Vol 546-549 ◽

pp. 2219-2222

Author(s):

Zhao Qing Song ◽

Shao Lei Zhou ◽

Xian Jun Shi ◽

Guo Qiang Liang

Keyword(s):

Vibration Control ◽

Controller Design ◽

Active Vibration Control ◽

Lms Algorithm ◽

Experimental Result ◽

Active Vibration ◽

The Mathematical Model

A modified α-LMS algorithm is presented and is applied to the controller design of active vibration control. A magnetostrictive material actuator is used as experimental equipment for active vibration control in this paper. The merit of the presented method is that it is not necessary to build the mathematical model of magnetostrictive actuator. The experimental result shows that the controller designed is efficient for active vibration control.

Recent Patents on the Angular Contact Ball Bearing of High-Speed Motorized Spindle

Recent Patents on Mechanical Engineering ◽

10.2174/2212797613666201208000558 ◽

2020 ◽

Vol 13 ◽

Author(s):

Yudong Bao ◽

Linkai Wu ◽

Yanling Zhao ◽

Chengyi Pan

Keyword(s):

High Speed ◽

Ball Bearing ◽

Rapid Development ◽

Ceramic Materials ◽

Development Trend ◽

Numerical Control ◽

Angular Contact Ball Bearing ◽

Practical Applications ◽

High Speed Cutting ◽

Advantages And Disadvantages

Background:: Angular contact ball bearings are the most popular bearing type used in the high speed spindle for machining centers, The performance of the bearing directly affects the machining efficiency of the machine tool, Obtaining a higher value is the direction of its research and development. Objective:: By analyzing the research achievements and patents of electric spindle angular contact bearings, summarizing the development trend provides a reference for the development of electric spindle bearings. Methods:: Through the analysis of the relevant technology of the electric spindle angular contact ball bearing, the advantages and disadvantages of the angular contact ball bearing are introduced, and the research results are combined with the patent analysis. Results:: With the rapid development of high-speed cutting and numerical control technology and the needs of practical applications, the spindle requires higher and higher speeds for bearings. In order to meet the requirements of use, it is necessary to improve the bearing performance by optimizing the structure size and improving the lubrication conditions. Meanwhile, reasonable processing and assembly methods will also have a beneficial effect on bearing performance. Conclusion:: With the continuous deepening of bearing technology research and the use of new structures and ceramic materials has made the bearing's limit speed repeatedly reach new highs. The future development trend of high-speed bearings for electric spindles is environmental protection, intelligence, high speed, high precision and long life.

Power information network intrusion detection based on deep learning and cloud computing

Journal of Intelligent & Fuzzy Systems ◽

10.3233/jifs-219104 ◽

2021 ◽

pp. 1-9

Author(s):

Xiangbing Zhao ◽

Jianhui Zhou

Keyword(s):

Cloud Computing ◽

Deep Learning ◽

Intrusion Detection ◽

High Speed ◽

Information Networks ◽

Network Intrusion Detection ◽

Information Network ◽

Advantages And Disadvantages ◽

Network Intrusion ◽

Capture Mechanism

With the advent of the computer network era, people like to think in deeper ways and methods. In addition, the power information network is facing the problem of information leakage. The research of power information network intrusion detection is helpful to prevent the intrusion and attack of bad factors, ensure the safety of information, and protect state secrets and personal privacy. In this paper, through the NRIDS model and network data analysis method, based on deep learning and cloud computing, the demand analysis of the real-time intrusion detection system for the power information network is carried out. The advantages and disadvantages of this kind of message capture mechanism are compared, and then a high-speed article capture mechanism is designed based on the DPDK research. Since cloud computing and power information networks are the most commonly used tools and ways for us to obtain information in our daily lives, our lives will be difficult to carry out without cloud computing and power information networks, so we must do a good job to ensure the security of network information network intrusion detection and defense measures.

A Nonlinear Rail Vehicle Dynamics Computer Program SAMS/Rail: Part 1—Theory and Formulations

2009 Joint Rail Conference ◽

10.1115/jrc2009-63045 ◽

2009 ◽

Author(s):

Khaled E. Zaazaa ◽

Brian Whitten ◽

Brian Marquis ◽

Erik Curtis ◽

Magdy El-Sibaie ◽

...

Keyword(s):

High Speed ◽

Dynamic Performance ◽

Three Dimensional ◽

Contact Element ◽

Contact Forces ◽

Simulation Code ◽

Vehicle Performance ◽

Normal Contact ◽

Advantages And Disadvantages ◽

High Speed Trains

Accurate prediction of railroad vehicle performance requires detailed formulations of wheel-rail contact models. In the past, most dynamic simulation tools used an offline wheel-rail contact element based on look-up tables that are used by the main simulation solver. Nowadays, the use of an online nonlinear three-dimensional wheel-rail contact element is necessary in order to accurately predict the dynamic performance of high speed trains. Recently, the Federal Railroad Administration, Office of Research and Development has sponsored a project to develop a general multibody simulation code that uses an online nonlinear three-dimensional wheel-rail contact element to predict the contact forces between wheel and rail. In this paper, several nonlinear wheel-rail contact formulations are presented, each using the online three-dimensional approach. The methods presented are divided into two contact approaches. In the first Constraint Approach, the wheel is assumed to remain in contact with the rail. In this approach, the normal contact forces are determined by using the technique of Lagrange multipliers. In the second Elastic Approach, wheel/rail separation and penetration are allowed, and the normal contact forces are determined by using Hertz’s Theory. The advantages and disadvantages of each method are presented in this paper. In addition, this paper discusses future developments and improvements for the multibody system code. Some of these improvements are currently being implemented by the University of Illinois at Chicago (UIC). In the accompanying “Part 2” and “Part 3” to this paper, numerical examples are presented in order to demonstrate the results obtained from this research.