制动系统支持高阶驾驶自动化功能系统设计的几点讨论

高阶驾驶自动化功能,对底盘制动系统提出了较高的系统要求;常规的ABS/ESP很难满足高阶驾驶自动化的冗余安全需求。文章在分析底盘制动系统各电子控制单元的原理及局限性基础上,对比设计多种方案的优劣性,深入讨论了不同等级驾驶自动化系统对底盘制动系统的需求,并进行了总结,为不同类型的高阶驾驶自动化的底盘制动选型提供了参考。     

General admissibility for linear estimators of multivariate random regression coefficients and parameters with respect to a restricted parameter set

This paper considers the linear model effected by random disturbance, Y = XB + ɛ, where $ \left[ \begin{gathered} B \hfill \\ \varepsilon \hfill \\ \end{gathered} \right] \sim \left( {\left[ \begin{gathered} A\Theta \hfill \\ 0 \hfill \\ \end{gathered} \right],V \otimes \Sigma } \right) $ \left[ \begin{gathered} B \hfill \\ \varepsilon \hfill \\ \end{gathered} \right] \sim \left( {\left[ \begin{gathered} A\Theta \hfill \\ 0 \hfill \\ \end{gathered} \right],V \otimes \Sigma } \right) , and Θ ^T A ^T X ^T NXAΘ ⩽ Σ. It gives a definition for general admissible estimator of a linear function SΘ + GB of random regression coefficients and parameters. The necessary and sufficient conditions for LY and LY + C to be general admissible estimators of SΘ + GB in the class of both homogenous and non-homogenous linear estimators are obtained. The conclusion is not dependent of whether or not SΘ +GB is estimable.