Equal Precision Rotation Speed Measurement System of Vichicle Transmission

2013 ◽  
Vol 765-767 ◽  
pp. 2153-2158
Author(s):  
Hong Tao Li
Keyword(s):  
Measurement System ◽  
Precision Measurement ◽  
Measurement Accuracy ◽  
Rotation Speed ◽  
Measurement Methods ◽  
Control Technology ◽  
Electronic Control ◽  
Power Train ◽  
Speed Measurement ◽  
Wide Range

The rev of vehicle transmission is an important parameter to reflect the performance of the power train, and the measurement accuracy will have an influence on the implement of electronic control technology in transmission system. Based on the analysis of common rev measurement methods, aiming at the feature of wide range of rev during HMCVT test, a method of rev equal precision measurement is been put forward.

A Rotation-Speed Measurement System Based on Magneto-Inductive Effect

2020 ◽  
Vol 18 (4) ◽  
pp. 299-303
Author(s):  
Tao Wang ◽  
Bicong Wang ◽  
Yuyi Chen ◽  
Yufeng Luo
Keyword(s):  
Direct Current ◽  
Measurement System ◽  
Rotational Speed ◽  
Inductive Effect ◽  
Rotation Speed ◽  
Rotating Shaft ◽  
High Rotational Speed ◽  
Sensing System ◽  
Dc Motors ◽  
Speed Measurement

There are few reports on high rotational speed measurement of brushless direct current (DC) motors based on giant magneto-inductive effect. In this study, a rotational speed measurement system based on giant magneto-inductive effect is established for measuring the rotational speeds of DC motors. Successive sawtooth waves are found when rotating shaft is close to the GMI sensor. Through using the magneto-inductive sensing system, different high rotational speeds (1500∼24000 r/min) of the motor are accurately measured. Therefore, this giant magneto-inductive sensor may be used for high rotational speed measurement of motors.

Classification Research of Rotation Speed Measurement

2013 ◽  
Vol 457-458 ◽  
pp. 998-1003
Author(s):  
Zhe Zheng ◽  
Ren Jie Zhang
Keyword(s):  
Measurement System ◽  
Measurement Method ◽  
Rotation Speed ◽  
High Reliability ◽  
Low Cost ◽  
Industrial Applications ◽  
Systematic Classification ◽  
Actual Measurement ◽  
Advantages And Disadvantages ◽  
Speed Measurement

Instantaneous speed measurement system can accurately measure the rotating target and realize the rotation direction judgment. It plays a very important role in industrial applications, as monitoring or controlling the rotation speed of transmitter, motor, turbine. With the development of technology, a modern speed measurement system is demanded to be intelligent, high integration, high precision, high reliability, and low cost etc. Based on the large number of literatures, this paper is a comprehensive review of the principle and application of domestic and foreign mature technology of rotation speed measurement method at present. Through the systematic classification, relationship between the different speed measurements is revealed, and the advantages and disadvantages of different measuring sensor are presented, so that readers can choose reasonable speed measurement method depending on the application, the actual measurement requirements and the test purposes.

Based on Image Processing Technology of Video Precision Measurement System

2012 ◽  
Vol 241-244 ◽  
pp. 269-271
Author(s):  
Jin Li Wang ◽  
Juan Zhu ◽  
Shu Yan Zhang
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
Precision Measurement ◽  
Measurement Accuracy ◽  
Digital Camera ◽  
Main Process ◽  
Boundary Extraction ◽  
System Calibration ◽  
Production Requirement ◽  
Parameters Measurement

This paper introduces a technique based on image processing method of non-contact measurement software system; the main process is based on the digital camera image enhancement processing and boundary extraction, As a proportion of system calibration are based on parameters, measurement of circumference of a part. The measurement accuracy accords with the actual production requirement, which proves the feasibility of video precision measurement system.

An Integrated Measurement Platform for Piezoelectric Transformer Based on Virtual Instruments

2011 ◽  
Vol 301-303 ◽  
pp. 1507-1510
Author(s):  
Xing Cheng Zhang ◽  
Mao Kui Li ◽  
Jian Qiang Liu ◽  
Yun Xu Fu
Keyword(s):  
Software Design ◽  
Measurement System ◽  
Measurement Method ◽  
Measurement Accuracy ◽  
Measurement Methods ◽  
Virtual Instruments ◽  
Response Signal ◽  
Piezoelectric Transformer ◽  
Research Section ◽  
Parameters Measurement

This paper presented an integrated measurement platform for piezoelectric transformer based on virtual instruments. Programmable signal generator was adopted to stimulate the piezoelectric transformer. Then an USB oscilloscope was used to acquire the response signal. We could get the results by analyzing the experimental data. The measurement accuracy and efficiency were greatly improved in the virtual instruments platform compared with the conventional measurement method. It was of great significance to the scientific research. Section I pointed out the problems in conventional piezoelectric transformer parameters measurement method and gave a solution of using virtual instruments technology to solve these problems. Section II described the hardware design of the measurement system. Section III described the software design of the virtual instruments measurement system. Conventional measurement methods and virtual instruments measurement method were compared in section IV.

scholarly journals Vibration of Rotating and Revolving Planet Rings with Discrete and Partially Distributed Stiffnesses

2020 ◽  
Vol 11 (1) ◽  
pp. 127
Author(s):  
Fuchun Yang ◽  
Dianrui Wang
Keyword(s):  
High Speed ◽  
Differential Operators ◽  
Natural Frequencies ◽  
Rotation Speed ◽  
Distribution Area ◽  
Vibration Modes ◽  
Governing Equations ◽  
Vibration Properties ◽  
Wide Range ◽  
Forced Responses

Vibration properties of high-speed rotating and revolving planet rings with discrete and partially distributed stiffnesses were studied. The governing equations were obtained by Hamilton’s principle based on a rotating frame on the ring. The governing equations were cast in matrix differential operators and discretized, using Galerkin’s method. The eigenvalue problem was dealt with state space matrix, and the natural frequencies and vibration modes were computed in a wide range of rotation speed. The properties of natural frequencies and vibration modes with rotation speed were studied for free planet rings and planet rings with discrete and partially distributed stiffnesses. The influences of several parameters on the vibration properties of planet rings were also investigated. Finally, the forced responses of planet rings resulted from the excitation of rotating and revolving movement were studied. The results show that the revolving movement not only affects the free vibration of planet rings but results in excitation to the rings. Partially distributed stiffness changes the vibration modes heavily compared to the free planet ring. Each vibration mode comprises several nodal diameter components instead of a single component for a free planet ring. The distribution area and the number of partially distributed stiffnesses mainly affect the high-order frequencies. The forced responses caused by revolving movement are nonlinear and vary with a quasi-period of rotating speed, and the responses in the regions supported by partially distributed stiffnesses are suppressed.

scholarly journals Apply IOT technology to practice a pandemic prevention body temperature measurement system: A case study of response measures for COVID-19

2021 ◽  
Vol 17 (5) ◽  
pp. 155014772110181
Author(s):  
Wei-Ling Lin ◽  
Chun-Hung Hsieh ◽  
Tung-Shou Chen ◽  
Jeanne Chen ◽  
Jian-Le Lee ◽  
...  
Keyword(s):  
Body Temperature ◽  
Temperature Measurement ◽  
Measurement System ◽  
Disease Surveillance ◽  
Disease Surveillance System ◽  
Temperature Detection ◽  
Wide Range ◽  
Body Temperature Measurement ◽  
Analysis System ◽  
Temperature Measurement System

Today, the most serious threat to global health is the continuous outbreak of respiratory diseases, which is called Coronavirus Disease 2019 (COVID-19). The outbreak of COVID-19 has brought severe challenges to public health and has attracted great attention from the research and medical communities. Most patients infected with COVID-19 will have fever. Therefore, the monitoring of body temperature has become one of the most important basis for pandemic prevention and testing. Among them, the measurement of body temperature is the most direct through the Forehead Thermometer, but the measurement speed is relatively slow. The cost of fast-checking body temperature measurement equipment, such as infrared body temperature detection and face recognition temperature machine, is too high, and it is difficult to build Disease Surveillance System (DSS). To solve the above-mentioned problems, the Intelligent pandemic prevention Temperature Measurement System (ITMS) and Pandemic Prevention situation Analysis System (PPAS) are proposed in this study. ITMS is used to detect body temperature. However, PPAS uses big data analysis techniques to prevent pandemics. In this study, the campus field is used as an example, in which ITMS and PPAS are used. In the research, Proof of Concept (PoC), Proof of Service (PoS), and Proof of Business (PoB) were carried out for the use of ITMS and PPAS in the campus area. From the verification, it can be seen that ITMS and PPAS can be successfully used in campus fields and are widely recognized by users. Through the verification of this research, it can be determined that ITMS and PPAS are indeed feasible and capable of dissemination. The ITMS and PPAS are expected to give full play to their functions during the spread of pandemics. All in all, the results of this research will provide a wide range of applied thinking for people who are committed to the development of science and technology.

scholarly journals New Power Train Concept for a City Hybrid Vehicle

Proceedings ◽  
2020 ◽  
Vol 58 (1) ◽  
pp. 6
Author(s):  
Roberto Capata
Keyword(s):  
Gate Valve ◽  
Rotation Speed ◽  
Electrical Power ◽  
Real Field ◽  
Power Train ◽  
Hybrid Propulsion ◽  
Performance Point ◽  
Original Group ◽  
Combustible Gases ◽  
Mechanical Decoupling

This research aims to test the feasibility of a prototype of a newly designed thermal engine for a hybrid propulsion vehicle. This study consists of the implementation of an innovative supercharger for city car ICE (900cc). The preliminary proposal presented here is to mechanically disconnect the compressor/turbine device, supporting the rotation of the compressor with a dedicated electric motor and connecting a turbine to a generator. Mechanical decoupling will allow both machines to be designed for operating closer to their maximum performance point, for most of the expected real field of operation. Specifically, the turbine is likely to have a slightly lower rotation speed than the original group and will, therefore, be slightly larger. The advantage is that, while in the current supercharger groups the surplus at high regimes is discharged through the waste-gate valve without expanding in a turbine, in the configuration proposed, all the energy of the combustible gases is used by the turbine to generate electrical power that can be used where required. Once the motorization of the vehicle (999 cc) has been fixed, the two turbomachines will have to be studied and designed, looking, where possible, for commercial components. Finally, a CFD will be needed to verify the validity of the choice, followed by careful experimentation campaigns.

Development of high speed measurement system for cell-scaffold interaction

2015 ◽  
Author(s):  
Yu Hirano ◽  
Masaru Kojima ◽  
Mitsuhiro Horade ◽  
Kazuto Kamiyama ◽  
Yasushi Mae ◽  
...  
Keyword(s):  
Measurement System ◽  
High Speed ◽  
Speed Measurement ◽  
Cell Scaffold
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