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Advances in Measurement Systems Part 3

Tham khảo tài liệu 'advances in measurement systems part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 76 Advances in Measurement Systems the guidance force changes. The experimental results of the guidance forces are not better than that of the levitation forces. The most changes of measured guidance forces in the 48 s time frame were 0.28 N at 300 rpm and 0.79 N at 400 rpm . 6. Conclusion Three high temperature superconducting HTS Maglev measurement systems were successfully developed in the Applied Superconductivity Laboratory ASCLab of Southwest Jiaotong University P. R. China. These systems include liquid nitrogen vessel Permanent Magnet Guideway PMG data collection and processing mechanical drive and Autocontrol features. This chapter described the three different measuring systems along with their theory of operations and workflow. The SCML-01 HTS Maglev measurement system can make real time measurement of Maglev properties between one or many YBCO bulks and employ a PM or PMG. Also the trapping flux of high Tc superconductors can be measured in the scanning range of 100 mm 100 mm. It was especially employed to develop the on board HTS Maglev equipment which travels over one or two PMGs. The on board Maglev equipment includes a rectangular-shaped liquid nitrogen vessel and YBCO bulk superconductors. Based on the original research results from the SCML-01 the first man-loading HTS Maglev test vehicle in the world was successfully developed in 2000. In order to make more thorough and careful research investigations the HTS Maglev HTS Maglev Measurement System SCML-02 was subsequently developed with even more function capabilities and a higher precision to extensively investigate the Maglev properties of YBCO bulk samples over a PM or PMG. The new features included higher measurement precision instant measurement at movement of the measured HTS sample automatic measurement of both levitation and guidance forces dynamic rigidity ability for the measured HTS sample to be moved along the three principal axes all at once relaxation measurements of both levitation .