Topic: Research on emergency braking control and its application of intercity high-speed maglev train (data provided by Southwest Jiaotong University)
Topic: Research and application of emergency braking control for high-speed intercity maglev train.
1. Analysis topic
The subject classification of this topic mainly belongs to the train braking device in transportation (China Library Book Classification Number. U260.35, international patent classification number F 16D), and the related knowledge disciplines are more specific, so you can search with "classification number". Use other restrictive keywords. Some categories of international patent classification number F 16D are as follows.
F 16D combined extractor for transmitting rotary motion; Clutch; Brake.
F 16D63/00 Brake not classified in other categories; Brake combinations of the above types (brakes with self-tightening auxiliary elements 49/22, 5 1/66, 55/50).
F 16D65/00 Parts or components (similar components of clutch 13/58).
This topic belongs to the general application research in the field of natural science. Usually, it is necessary to search the literature with a time span of about 5 years, and then go back 5 ~ 10 years according to the specific situation. Information types involve Chinese and foreign patents, periodicals, dissertations, conference documents, etc.
2. Selection of retrieval tools
According to the nature of the subject scope and research direction of the retrieval discipline, the retrieval tools to be retrieved are determined as follows.
1) VIP database of Chinese sci-tech periodicals
2) Wanfang China Science and Technology Literature Database Group
3) Wanfang China Scientific and Technological Achievements Database
4) Wanfang China Academic Conference Papers Database
5) Wanfang China Dissertation Database
6) Full-text database of excellent doctoral and master's dissertations in China HowNet.
7) China Knowledge Network "Full-text Database of Proceedings of Important Conferences in China"
8) China Knowledge Network "China Journal Full-text Database"
9)NSTL Chinese Library: Chinese periodicals, Chinese conference papers and Chinese dissertations; NTSL West Library: western periodicals, foreign conference papers, foreign dissertations, foreign scientific and technological reports.
10)EBSCO host
1 1)AIP/APS (american physical society/Physics Association) database.
Cambridge scientific abstracts database
13) project village 2(EI)
14) Patent Search in China National Intellectual Property Administration, China
15) European patent office
16) US Patent and Trademark Office
3. Determine the retrieval method
It is best to choose the topic (keyword) method for this topic, and if necessary, it can be combined with the classification method. The retrieval method adopts the alternating method, that is, the time method and the citation method are alternately carried out.
Step 4 determine the search term
Preferred keywords: intercity railway; High speed train; High-speed railway; Maglev (magnetic levitation); Emergency braking; Brake control; Eddy current brake.
Alternative search terms: express train; Finite element analysis; Distance limit; Fuzzy control (fuzzy contr01); Brake; Brake dynamics.
5. Draw up a search formula (only part of the list)
1) Basic retrieval formulas of China National Intellectual Property Administration patent database or National Science and Technology Library database: (intercity railway or high-speed railway or maglev) and (braking dynamics or emergency braking or eddy current braking).
Fill in the interface classification number of China China National Intellectual Property Administration Patent Database with F 16D.
2) retrieval formula of VIP Chinese sci-tech periodical database: k= ((intercity railway+high-speed railway+maglev) * (braking dynamics+emergency braking+eddy current braking)) +c=U260.35.
3) General retrieval formulas for foreign language databases: ("intercity railway" or "high-speed railway" or Magelev *) and Brak * and (power or emergency or "eddy current").
6. Search results (partial)
According to the grammatical rules of different retrieval systems, the above retrieval formulas are adjusted appropriately and appropriate retrieval fields are selected for retrieval. The above 16 databases are searched separately, and Baidu is used for supplementary search. The time span is 15 years. * * * More than 50 related literatures were retrieved, which are arranged as follows according to literature types.
1) journal papers
(1) Luo Tingyong Guo. Research on Safe Braking Control of High-speed Maglev Train Based on Eddy Current Braking Technology [J]. Railway Vehicles, 2006
② Zhi Ding. Application of eddy current braking technology in high-speed trains [J]. Electric locomotives and urban rail vehicles, 2004
(3) Qing, Wang, Zhang Chunguo, Zhuang, Guo Guangsheng, et al. Development of brake linings for high-speed railway vehicles [J]. New carbon materials (China). 2002, 17(2):29~34
Wang (Tsinghua University), Qiu Shijie. Analysis of eddy current braking of high-speed railway [J].IEEE Transactions on Magnetics,1998,34 (4):1237 ~1239.
2) Academic conference papers (omitted)
3) Patent literature (omitted)
4) Doctoral thesis (omitted)
7. Evaluation of retrieval effect
The research of high-speed railway braking system is still a hot issue for scholars in related fields at home and abroad. Some research achievements of some domestic universities and research institutions have reached or are at the advanced level in the world, such as Zhejiang University and Southwest Jiaotong University.
However, at present, similar research mostly stays at the theoretical level. Judging from the retrieval results, there are few specific application studies (such as the application of intercity high-speed railway). Therefore, this topic-"Research on Emergency Braking Control and Its Application of Intercity High-speed Maglev Train" has great social and academic significance and certain research value.