环形泵浦相位匹配CARS技术的匹配方式和空间分辨率的实验研究

通过对环形泵辅相位匹配方式的解剖，发现所得到的CARS信号是由多种相让匹配方式产生的，分析了各种匹配方式产生的CARS强度的份额与空间分布。通过光路设计可得到与交叉BOXCARS相比拟的空间分辨率。计算和实验都证实了两束泵浦光与斯托克斯光在透镜表面上的张角有一最佳值，这种相位匹配方式是不存在相位失配的BOXCARS，并充分利用了环形泵浦束的能量。

Vehicle trajectory linearisation to enable efficient optimisation of the constant speed racing line

A driver model is presented capable of optimising the trajectory of a simple dynamic nonlinear vehicle, at constant forward speed, so that progression along a predefined track is maximised as a function of time. In doing so, the model is able to continually operate a vehicle at its lateral-handling limit, maximising vehicle performance. The technique used forms a part of the solution to the motor racing objective of minimising lap time. A new approach of formulating the minimum lap time problem is motivated by the need for a more computationally efficient and robust tool-set for understanding on-the-limit driving behaviour. This has been achieved through set point-dependent linearisation of the vehicle model and coupling the vehicle-track system using an intrinsic coordinate description. Through this, the geometric vehicle trajectory had been linearised relative to the track reference, leading to new path optimisation algorithm which can be formed as a computationally efficient convex quadratic programming problem. © 2012 Copyright Taylor and Francis Group, LLC.

Pressure data analysis of formula one racing engines

The measured time-history of the cylinder pressure is the principal diagnostic in the analysis of processes within the combustion chamber. This paper defines, implements and tests a pressure analysis algorithm for a Formula One racing engine in MATLAB1. Evaluation of the software on real data is presented. The sensitivity of the model to the variability of burn parameter estimates is also discussed. Copyright © 1997 Society of Automotive Engineers, Inc.

The research of range-gated laser night vision system on cars - art. no. 68351V

The characteristic of several night imaging and display technologies on cars are introduced. Compared with the current night vision technologies on cars, Range-gated technology can eliminate backscattered light and increase the SNR of system. The theory of range-gated image technology is described. The plan of range-gated system on cars is designed; the divergence angle of laser can be designed to change automatically, this allows overfilling of the camera field of view to effectively attenuate the laser when necessary. Safety range of the driver is calculated according to the theory analysis. Observation distance of the designed system is about 500m which is satisfied with the need of safety driver range.

2/5/20, [stade Bergeyre], championnat de Paris, [football] association, Red Star contre R.C.F. [Racing Club de France] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59140

2/5/20, [stade Bergeyre], championnat de Paris, [football] association, Red Star contre R.C.F. [Racing Club de France] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59141

2/5/20, [stade Bergeyre], championnat de Paris, [football] association, Red Star contre R.C.F. [Racing Club de France] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59143

2/5/20, [stade Bergeyre], championnat de Paris, [football] association, Red Star contre R.C.F. [Racing Club de France] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59144