scholarly journals Development of high-performance sports machine and elucidation of Two-seam ball gyroball

Impact ◽  
2021 ◽  
Vol 2021 (5) ◽  
pp. 75-77
Author(s):  
Shinobu Sakai
Keyword(s):  
Systems Engineering ◽  
High Speed ◽  
High Performance ◽  
Control Method ◽  
Production Systems ◽  
Human Beings ◽  
Fit For Purpose ◽  
Design And Manufacture ◽  
Method Analysis ◽  
Mathematics And Physics

Sports engineering uses mathematics and physics to develop solutions to sporting problems. It involves the design and manufacture of sports equipment and facilities that can help maximise athletic performance. In order to develop fit-for-purpose products, it is necessary to consider the motions and movements of athletes. Professor Shinobu Sakai, Production Systems Engineering and Sciences, Komatsu University, Japan, is combining AI and neural networks (NN) to develop multifunctional and high-performance sports equipment and training machines that can benefit athletes and people across the globe who play sports. Believing that machines are subordinate to human beings, a key goal for Sakai is to augment the performance of sports players through the development of tools and machines. Some of the state-of-the-art tools and methodologies he uses in his work are high-resolution sensors, laser-speed sensors, MATLAB and general finite element method analysis software (ANSYS/LS-DYNA). He has developed a shuttlecock launching machine for badminton that can launch at high speed, a high-performance baseball pitching machine that is able to generate an efficient and objective gyro spin and has a high throwing performance and a pitching control method that uses AI.

scholarly journals Design of Monitoring and Control System for Multi-Tube Ignition Pulse Detonation Engine

2018 ◽  
Vol 36 (1) ◽  
pp. 162-168
Author(s):  
Wenlong Zhang ◽  
Chengming Pei ◽  
Jianghong Li ◽  
Wei Fan
Keyword(s):  
Control System ◽  
High Speed ◽  
Control Method ◽  
Signal Acquisition ◽  
Human Beings ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Pulse Detonation ◽  
Detonation Engine ◽  
And Control

A multi-processers monitoring and control system, which use the Lora as wireless communication technology, was designed to meet needs of mobility, safety, fast frequency adjustment, portability, none affect on PDE thrust test and so on. This paper elaborated on scheme of whole system, local high-speed signal acquisition, storage, data export and ignition control method. Experimental results show that the monitoring and control system was able to implement timely and accurately control and data acquisition of detonation tubes, dynamical parameters changing, remote control and eliminate the damage for human beings caused by PDE, with mobile and portable, high integration, convenient operation, reliable performance characteristics.

scholarly journals Effects of Pulse Voltage Duration on Open–Close Dynamic Characteristics of Solenoid Screw-In Cartridge Valves

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1722
Author(s):  
Daling Yue ◽  
Linfei Li ◽  
Liejiang Wei ◽  
Zengguang Liu ◽  
Chao Liu ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
High Speed ◽  
Control Method ◽  
Low Cost ◽  
Pulse Voltage ◽  
Experimental Comparison ◽  
Negative Pulse ◽  
Closing Time ◽  
Opening And Closing ◽  
Design And Manufacture

The hydraulic high-speed on/off valve (HSV)—the critical core component of digital hydraulic technology—has a special structural design and manufacture due to its fast opening and closing, which results in high prices and maintenance costs. The solenoid screw-in cartridge valve (SCV) is widely used in the hydraulic industry because of its merits, such as mature technology, reliable quality, and low cost. The contribution of this study is to replace the high-speed on/off valve with the SCV in some areas of application by introducing positive and negative pulse voltage control for the coil of the SCV, which only modifies the control circuit and needs no change in structure. Based on the analysis of the structure of the SCV, the simulation model was developed in AMESim and validated by experiments to investigate the effects of the pulse voltage duration on the open–close dynamic characteristics and find the optimal pulse voltage duration, so that the SCV can open or close in the shortest time to reduce energy loss as far as possible. The simulation results showed that the positive and negative pulse voltage could quicken the rising or declining speed of the coil current and dramatically decrease the opening and closing delay time. By the experimental comparison with the original control method, the opening time of the SCV decreased from 30 ms to 13 ms, and the closing time was reduced from 139 ms to 14 ms.

Design on Large Power Traction Battery Formation Testing System of Electric Vehicle

2012 ◽  
Vol 608-609 ◽  
pp. 1587-1593 ◽  
Author(s):  
Zheng Guo Li ◽  
Qiang Zhang ◽  
Kai Zhang
Keyword(s):  
Electric Vehicle ◽  
High Speed ◽  
High Performance ◽  
Design Research ◽  
Pulse Width Modulation ◽  
Modular Design ◽  
Control Method ◽  
Design Method ◽  
Testing System ◽  
Large Power

Aiming at the current design research status on large power traction battery formation testing system of electric vehicle, this paper presents a system design method based on the management computer, the control computer and the output computer which is 3 layers construction including superior middle and inferior. In the hardware design, high-performance microcomputer is adopted as the main controller, high speed photo electricity coupling separated circuit is employed as the input and output interface, and pulse width modulation control method is used in control algorithm. In the software design, modular design is used to divide the software system into four function parts: data calculating and processing, data displaying, data storing, parameter setting and regulating.. At last, the data analysis of the system experimental results indicates that this kind of design method has a good application foreground.

Many High Performance Motion Control of Linear Motor Drive System Research

2014 ◽  
Vol 599-601 ◽  
pp. 981-984
Author(s):  
Chuan Jun Li ◽  
Qiu Juan Liang
Keyword(s):  
Motion Control ◽  
High Precision ◽  
High Speed ◽  
High Performance ◽  
Control Method ◽  
Linear Motor ◽  
Structure Design ◽  
Numerical Control ◽  
System Control ◽  
Motion Platform

To realize the movement of high-speed, high-precision positioning, satisfy the requirement of the numerical control processing equipment and high precision, based on high performance motion control platform driven by linear motor, an optimized for high performance XY table structure design, the broadband modal coupling modeling and simulation movement, dynamics analysis and controller design, such as content, high performance motion platform organization structure optimization, the global optimization of mechanical system and electrical system. Eventually for high performance sports mechanism design, modeling method and system control method provides the key techniques such as solution, and to develop more high performance motion control of linear motor driven platform prototype machines.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

PHAX-SCAN: Functional integration of a Scanning Electron Microscope and an energy-dispersive x-ray analyser

1989 ◽  
Vol 47 ◽  
pp. 56-57
Author(s):  
Marc H. Peeters ◽  
Max T. Otten
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
Functional Integration ◽  
Energy Dispersive ◽  
X Rays ◽  
X Ray ◽  
High Speed Analysis ◽  
Scanning Electron

Over the past decades, the combination of energy-dispersive analysis of X-rays and scanning electron microscopy has proved to be a powerful tool for fast and reliable elemental characterization of a large variety of specimens. The technique has evolved rapidly from a purely qualitative characterization method to a reliable quantitative way of analysis. In the last 5 years, an increasing need for automation is observed, whereby energy-dispersive analysers control the beam and stage movement of the scanning electron microscope in order to collect digital X-ray images and perform unattended point analysis over multiple locations.The Philips High-speed Analysis of X-rays system (PHAX-Scan) makes use of the high performance dual-processor structure of the EDAX PV9900 analyser and the databus structure of the Philips series 500 scanning electron microscope to provide a highly automated, user-friendly and extremely fast microanalysis system. The software that runs on the hardware described above was specifically designed to provide the ultimate attainable speed on the system.

The bright future of digital imaging in scanning electron microscopy

1993 ◽  
Vol 51 ◽  
pp. 768-769
Author(s):  
M. T. Postek ◽  
A. E. Vladar
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Digital Imaging ◽  
High Speed ◽  
High Performance ◽  
Mass Storage ◽  
Analog To Digital ◽  
Central Processing ◽  
Digital Imaging Technology ◽  
Scanning Electron

One of the major advancements applied to scanning electron microscopy (SEM) during the past 10 years has been the development and application of digital imaging technology. Advancements in technology, notably the availability of less expensive, high-density memory chips and the development of high speed analog-to-digital converters, mass storage and high performance central processing units have fostered this revolution. Today, most modern SEM instruments have digital electronics as a standard feature. These instruments, generally have 8 bit or 256 gray levels with, at least, 512 × 512 pixel density operating at TV rate. In addition, current slow-scan commercial frame-grabber cards, directly applicable to the SEM, can have upwards of 12-14 bit lateral resolution permitting image acquisition at 4096 × 4096 resolution or greater. The two major categories of SEM systems to which digital technology have been applied are:In the analog SEM system the scan generator is normally operated in an analog manner and the image is displayed in an analog or "slow scan" mode.

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