Results and discussion Fig. 1 shows the density of the as-sintered pure and Al2O3-inserted SrMnO3 ceramics. When Al2O3 was introduced to the SrMnO3 ceramic compounds, the corresponding density and shrinkage abruptly increased probably due to the formation of 6H-hexagonal SrMnO3 phase with a...
Fig. 5. Time response of (a) speed, (b) phase current and (c) total torque for different controller structure and optimization algorithms at no-load. 4.2. Case 2: Static load torque (t = 100n.m) The simulation results for this case are shown in Fig. 6. Similar to the no-load ca...
E2g. M–H loops analysis was carried out of the films for both in-plane and out-of-plane orientation of the films.MsandHcvalues varied for both the series B and E with thickness and calcination time. The resulting films show good magnetic properties, which makes them appropriate for utilisa...
需要金币:*** 金币(10金币=人民币1元) 美国国家标准与技术研究院NIST 参考物质说明书 标准品说明书SRM 2977 Mussel Tissue (Organic Contaminants and Trace Elements), September 12, 2008.pdf 关闭预览 想预览更多内容,点击免费在线预览全文 免费在线预览全文 ...
wall-coated open-tubular column with a 0.25 μm film of non-polar, immobilized phase. A constant-current electron capture detector (63Ni) was used for those analyses. Quantitative results were obtained through the use of 2,2′,4,4′,5,5′,-hexachlorobiphenyl as an internal standard. ...
In this way, the proposed solution uses a three-level quadratic Boost (3LQB) DC-DC converter to supply a four-phase 8/6 SRM drive responsible for driving a water pumping system. Since PV panels are characterized by a huge voltage variation, as a function of the solar irradiation, usually...
We obtained the low temperature phase SrMgF4 single crystal with high optical quality and the size of 10×7×5 mm3. The electronic structure of SrMgF4 was measured by XPS. Since the calibration methods are different, the absolute BE value is not a suitable parameter for the XPS measurement....
Value and Uncertainty: The certified phase purity of the material expressed as a mass fraction is: Crystalline Alumina: 9 1.75 % ± 1.52 % The interval defined by the certified value and its uncertainty represents an expanded uncertainty using k = 2, in the absence of systematic error [3,4...
However, due to the machine’s large inductance, the current would not immediately fall to zero after reaching the aligned position, which results in negative torque production. Consequently, the phase switches should be turned off at some point before reaching the aligned position. In this regard...