考虑动力系功率损失和CVT响应滞后集成发动机—CVT控制的性能

本文考虑由于 CVT速比变化引起动力系功率损失和惯性转矩推荐了一种集成发动机一无级变速器( CVT)控制算法。此外还提出了减少 CVT速比响应滞后对驱动转矩影响的补偿算法。实验结果表明 ,最佳发动机速度补偿算法给出最佳发动机工作点在最佳工作线附近。当加速度响应接近相等时和最佳转矩补偿比较。建议把集成发动机— CVT控制算法的特点和传统 CVT相比较 。

Fast reconstruction of digital holograms for extended depths of field

Past research has demonstrated that a static, three-dimensional （3D） object scene can be directly recorded as a complex digital hologram. However, numerical reconstruction of the object scene, which may comprise multiple sections located at unknown distances from the hologram, is a complicated and computation-intensive process. To the best of our knowledge, we propose, for the first time, a low complexity method that is capable of recon- structing a complex hologram, such that sections at different depths in the 3D object scene can be automatically reconstructed at the correct focal distances and merged into a single image for an extended depth of field. We demonstrate an order of magnitude increase of the depth of field for binary objects. With the use of a graphical processing unit, the reconstruction of a 512 × 512 complex hologram can be accomplished in about 100 ms, equivalent to around 10 frames per second.

Search for the rare decay B^(0)→J/ψФ

A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LHCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 fb.No significant signal of the decay is observed and an upper limitof 1.1x 10^(-7)at 90%confidence level is set on the branching fraction.