A high repetition rate Tm:Ho:LuLiF master-oscillator and polarization-maintaining (PM) Tm-doped fiber power-amplifier system is presented. A 11.3-kHz, 0.4-nm line width, 0.89-W Tm:Ho:LuLiF seed laser is developed. Using a two-stage PM Tm-doped fiber power amplifier system, 32.4-W output power is obtained with 0.4-nm line width at a central wavelength of 2058.5 nm, corresponding to 0.66-W seed laser. The laser spectrum and pulse profile are measured.

We report an all-fiber high power, single frequency large-mode area (LMA) linearly polarized ytterbiumdoped fiber amplifiers (YDFA) module, which is based on the master oscillator multi-stage power amplifiers (MOPA). The maximum output power is 43.8 W at a wavelength of 1064 nm when 60-W launched pump light is coupled, with high slope efficiency of 88%, polarization extinction rate (PER) >17.2 dB and nearly diffraction-limited beam quality (M2<1.1).

最新完整英文版（22页）UL2056：2020 Outline of Investigation for Safety of Lithium-ion Power Bank-锂电池移动电源（充电宝）安规要求， 本标准规定了使用锂离子电池作为能源，输入和输出电压不超过20 Vdc的移动电源的安全要求和测试。 注1：集成在行李箱，便携箱，袋子，包等中的移动电源（仅可移动）在本研究大纲的范围内。 注2：本调查大纲不适用于： –具有UL 2743涵盖的启动功能的移动电源； –作为设备一部分提供的移动电源； –作为移动设备一部分提供的移动电源，包括带有推进装置的行李箱。

该资源包含发动机建模仿真软件GT-POWER的学习文档、培训ppt和学习视频。包括GT的各部分功能及使用方法，资料文档齐全。

这是美国韦恩州立大学的工学院的一位教授给的，据说是GT---POWER的英文原版教程。此资源对于学习动力的朋友很有用啊！！

PC Power Managed Design Guide-V1_2

对可穿戴型助力机器人控制策略进行分析.根据研究目的及人体结构和功能的特殊性和复杂性,通过将人体下肢作适当简化及必要的假设,提出基于骨-肌肉功能模型的下肢助力机器人控制方法,该方法通过对骨-肌肉模型中的弹性系数和阻尼系数的调节能为人体下肢运动提供助力支持.同时,通过人-机间交互力信息实现人体下肢的运动预判.

Power BI Helper 软件

The critical findings associated with end-face total internal reflection (TIR) phenomemon we proved before are reported. In particular, these findings reveal that the end-face-TIR capable rays experience enormous mode mixing when encountering a roughened end face. As a result, 94% of the overall detectable power is contributed by this effect. With a smooth fiber end face, this figure is mere 52%. We interpret the mechanism behind these unusual phenomena and its significance for the performance e

Power Transmission of UHF Passive Embedded RFID in Tires