【摘 要】
:
Parking into small berths remains difficult for unskilled drivers.Researchers had proposed different automatic parking systems to solve this problem.The first k
【机 构】
:
Beijing Key Laboratory of Urban Intelligent Traffic Control Technology, North China University of Te
论文部分内容阅读
Parking into small berths remains difficult for unskilled drivers.Researchers had proposed different automatic parking systems to solve this problem.The first kind of strategies (called parking trajectory planning) designs a detailed reference trajectory that links the start and ending points of a special parking task and let the vehicle track this reference trajectory so as to park into the berth.The second kind of strategies (called guidance control) just characterizes several regimes of driving actions as well as the important switching points in certain rule style and let the vehicle follows the pre-selected series of actions so as to park into the berth.Parking guidance control is simpler than parking trajectory planning.However,no studies thoroughly validated parking guidance control before.In this paper,a new automatic parking method is presented,which could characterize the desired control actions directly.Then the feasibility is examined carefully.Tests show that a simple parking guidance control strategy can work in most parallel parking tasks,if the available parking berth is not too small.This finding helps to build more concise automatic parking systems that can efficiently guide human drivers.
其他文献
该文分析了有功功率优化和备用容量优化问题,对于不同的备用使用率,给出了实际购电费用为目标的交易优化模型;从全局和局部角度出发,分析了系统购电费用和电能需求的关系,在
In minimally invasive surgery,one of the main objectives is to ensure safety and target reaching accuracy during needle steering inside the target organ.In this
随着工业技术的发展,电网中的谐波污染日益严重,通常采用无源滤波器和有源滤波器滤除电网中的谐波,使电网中的谐波含量满足国标要求。然而电网中的谐波电压和谐波电流也是一种能量,只是其频率并非电网所采用的基波频率。提取电网中的谐波电能并加以利用,实现在治理电网谐波的同时利用电网谐波电能。本文提出一种基于谐波相序特性和基波磁通补偿原理、采用单调谐滤波电路与三相变压器相结合提取三相谐波电能的新方法。该方法将单
该课题结合变频空调控制器智能化,研究并设计了降低变频调速器成本的应用方案,旨在降低变频空调控制器的成本,推广其市场应用.降低成本的变频调速方案,分别从变频器的两大组
Radial basis function neural network (RBFNN) is an effective algorithm in nonlinear system identification.How to properly adjust the structure and parameters of
随着电网技术的发展,电网的规模和容量不断增大,同时电网的短路容量和短路电流也不断增大。过大的短路电流不但会造成电网设备制造成本增加,而且会对电力系统的安全可靠运行构成
复合笼条转子感应电动机转子采用特殊的槽形,且槽中含有铸铝和铜铁合金两种材料。这使得复合笼条转子感应电动机不仅有良好的起动性能,而且有接近普通鼠笼型感应电动机的运行性能,在许多场合有广泛的应用前景。本文首先给出了复合笼条转子感应电动机起动时的求解域,边界条件和假设条件。利用电磁场理论和变分法建立了复合笼条转子感应电动机起动时二维电磁场的数学模型,给出了正弦时变场单元分析过程和离散格式以及最终的总体合
主绝缘(定子绕组绝缘)是发电机最重要的组成部分之一.在大型发电机长期的运行过程中,要遭受到电场、热场、机械应力和环境因子的联合老化作用,其机械性能和电气性能逐渐变坏,
输电线路继电保护装置对电力系统的安全稳定运行起着至关重要的作用。因此随着现代电网的高速发展,越来越重视对电力系统继电保护工作人员的培训工作。然而当前的大部分微机继
能源问题和环境问题已成为当今世界上两大重要议题,研究开发绿色的,可再生的新能源得到人们的日益重视.人们普遍认为在目前可知的、并且已经得到比较广泛利用的可再生能源中,