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针对传统布线的缺陷,设计了汽车光纤多路传输(布线)控制系统。本文概述了它的发展,并重点介绍了基本设计原理、模块化结构及抗干扰试验。系统由控制开关、光发射模块、三根总线(电源线、光纤信号线、系统地线)、光接收功能模块、终端用电器或执行器组成。用电器地线为搭铁。以大功率场效应晶体管代替继电器作功率形状,信号由光纤按串委分时复用方式传递。它只用三根总线控制多个终端用电器。其优点是:用线数量大减,线束简单,便于安装、检修、与传统布线系统相比,它还具有质量轻、体积小、传输信息量大等特点,其原理适用于对发;支机实时控制、车辆状态监测和通-断负载的开关控制等要求。 相似文献
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主要介绍基于LIN总线的汽车空调控制系统的设计,采用意法半导体的32位ARM Cortex M3内核的STM32系列单片机作为控制器,提出一种LIN总线在现代汽车空调控制系统中的应用方案和设计重点,使汽车空调控制系统达到性能可靠、工作稳定、线束简单、成本低廉的效果。 相似文献
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随着汽车技术的快速发展,汽车的舒适性、安全性、智能化程度不断提升,导致车载功能电器不断增多,为提高车载各功能电器的可靠性,连接各功能电器的汽车线束多采用集成式设计,将发动机线束、机舱线束、仪表线束、车身线束及其它功能线束集合设计成一条线束;直接导致集成式线束的导线数量、单根导线长度大幅增加,线束的可制造性大幅降低,装配过程控制也愈加困难。为解决集成式线束生产制造及过程控制的难点和问题,我公司在现有HMES系统的基础上,设计和开发了适合集成式大型汽车线束流水线装配管理模块。本文将以HMES装配模块的开发设计和应用方案,与各位共同探讨和交流。 相似文献
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汽车线束作为汽车传递信号及执行电能的载体,对汽车电气设备和各系统之间协调配合有着至关重要的作用。本文简述了汽车线束连接器端子管控的重要性,旨在降低整车电器故障率,提升线束设计制造水平。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(2):215-236
In this paper, a systematic design with multiple hierarchical layers is adopted in the integrated chassis controller for full drive-by-wire vehicles. A reference model and the optimal preview acceleration driver model are utilised in the driver control layer to describe and realise the driver's anticipation of the vehicle's handling characteristics, respectively. Both the sliding mode control and terminal sliding mode control techniques are employed in the vehicle motion control (MC) layer to determine the MC efforts such that better tracking performance can be attained. In the tyre force allocation layer, a polygonal simplification method is proposed to deal with the constraints of the tyre adhesive limits efficiently and effectively, whereby the load transfer due to both roll and pitch is also taken into account which directly affects the constraints. By calculating the motor torque and steering angle of each wheel in the executive layer, the total workload of four wheels is minimised during normal driving, whereas the MC efforts are maximised in extreme handling conditions. The proposed controller is validated through simulation to improve vehicle stability and handling performance in both open- and closed-loop manoeuvres. 相似文献
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《JSAE Review》1999,20(3):337-341
Since each component of a hybrid system has its own limit of performance, the vehicle power depends on the weakest component. So it is necessary to design the balance of the components. The vehicle must be controlled to operate within the performance range of all the components. We designed the specifications of each component backward from the required drive force. In this paper we describe a control method for the motor torque to avoid damage to the battery, when the battery is at a low state of charge. 相似文献
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城市垃圾车又称环卫车,是一种专用车与普通汽车的区别主要是改装了具有专用功能的上装部分,能完成某些特殊运输和作业功能。其中变速操纵是否轻便,取力器工作是否可靠,驾驶员对此十分敏感,设计好上述系统对城市环卫车是非常重要的。文章从离合、离合管路、变速器、变速操纵及取力器管路5个方面分析了城市环卫车匹配变速箱的情况分析,并针对各个影响因素提出改进方法,提出了可行的评价操控性能的优劣方法。在设计过程中,以上5个方面是逐一排查匹配变速箱的关键要素,并通过反复的主观评价和逐步优化,可以取得良好的效果。 相似文献
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纯电动汽车空调既需要为压缩机提供动力,也需要给蒸发风机和冷凝风机提供动力。传统的设计是独立的变频器和DCDC模块,不但占用空调空间而且布线走线麻烦。为解决这一问题,汇川专门研发了一款内置变频器和DCDC的二合一驱动器CV800。CV800二合一大巴空调驱动器包含一个变频器和一个双路可调压的DCDC电源,可以实现有刷风机和无刷风机的控制,特别适合在电动汽车空调上应用。 相似文献
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随着汽车可靠性、安全性的提高,电子电气技术被广泛地运用到其中,电器件使用频率越来越高,使得汽车上电路数量及用电量也在不断地增加,对于整车的线束布置设计要求也越来越复杂化。文章以商用车整车线束布置为核心,明确整车线束三维布置设计原则,提出整车线束布置方式,分析整车线束布置中应注意的问题,提高整车线束布置的合理性和科学性。 相似文献
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对于ABS控制器的设计,在控制逻辑确定后,其设计难点在于控制器的软硬件实现。文章基于模糊滑模控制逻辑,介绍了基于Freescale公司HCS12系列16位单片机——MC9S12DP256的汽车ABS模糊滑模控制器的软硬件设计。硬件电路设计中,采用最小系统板和目标功能电路板分离设计的方法,基于最小系统开发板,设计了包括电源模块、输入调理及输出驱动电路的目标功能板;软件设计中,依据控制需求,采用模块化编程思想,给出程序流程图,描述了ABS控制系统的控制过程。指出该滑模控制器为后续的台架试验验证及轿车的主动安全控制装置的集成化研究打下了坚实的基础。 相似文献
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文章主要解决一款商用车驾驶室车门防水问题,并对防水性能提升进行设计研究。在生产的过程中车门和驾驶室装配固定连接,车门防水由于受到车门钣金、车门密封条零部件、车门电器线束、防水膜等多方面因素的影响,一直都是车门系统设计的重要环节之一,通过对车门钣金间和门框钣金间隙控制、门框密封截面、档水条密封截面流水方向引导、车门线束及拉丝固定的布置、同时防水膜隔音棉一体式结构控制要求等,提升车门系统防水和其周边相关零部件匹配要求。经过设计控制措施对该车车门系统防水结构设计研究进行实际验证。结果对每一台车淋雨试验,解决防水车门系统漏水问题。从而提高了驾驶员舒适性和保障安全生产的工作环境。 相似文献
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Design of a soft switching bidirectional DC-DC power converter for ultracapacitor-battery interfaces
Z. W. Wu Z. L. Zhang C. L. Yin Z. Zhao 《International Journal of Automotive Technology》2012,13(2):325-336
One solution to the low specific power of hybrid electric vehicular batteries is a hybrid energy storage system (HESS) that
takes advantage of the high specific power performance of ultra-capacitors. The design of a type of zero current transition
(ZCT) soft switching bidirectional direct current-direct current (DC-DC) power converter that can be used as an ultra-capacitor-battery
interface in an active parallel schema of a HESS is described. The circuit operation of the ZCT DC-DC power converter is depicted
in detail. The HESS controller is designed as a two-layered hierarchical control structure: the first layer is responsible
for working mode control of the HESS, and the second layer is responsible for DC-DC power converter control in which a fuzzy
logic PID algorithmis employed. Simulation results indicate that this design is a potential solution to the problem of the
low specific power of batteries, especially for regenerative braking and electric motor assist. The proposed active parallel
schema with ZCT exhibits a significant advantage in power and energy decoupling. HESS with ZCT achieves better efficiency
compared to the battery only operation. The experimental results validates the idea that the ultra-capacitor cooperates with
the battery in acceleration mode. 相似文献
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C. Pilbeam R.S. Sharp 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1996,25(3):169-183
Two possible layouts of a slow-active suspension model are analysed. Optimal control laws for different actuator bandwidths and various amounts of road preview are generated, and estimates of power consumption are made. Higher bandwidth systems (10Hz) require less preview to obtain a given level of performance than those with a lower bandwidth (3Hz) but use more energy in doing so. Similar performance is available from the two systems considered, although the second uses considerably less energy to obtain that performance. 相似文献