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由于功能陶瓷具有绝缘性、介电性、半导体、磁性等方面的特异功能而被广泛地用于微电子、信息、自动化等工业,近年来,功能陶瓷在汽车上的应用也在不断增加,尤其是陶瓷传感器的开发已成为汽车电子化的重要环节,本文简要地介绍陶瓷传感器在汽车上的应用现状及前景。 一、汽车用传感器的条件: 1)要能够长久工作在恶劣环境中:高温、低温、振动、加速、潮湿、噪声、废气; 相似文献
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传感器在汽车中应用现状及发展趋势 总被引:1,自引:0,他引:1
随着电子技术的发展,汽车电子化程度不断提高,通常的机械系统已经难以解决某些与汽车功能要求有关的问题,而被电子控制系统代替。传感器的作用就是根据规定的被测量的大小,定量提供有用的电输出信号的部件,亦即传感器把光、时间、电、温度、压力及气体等的物理、化学量转换成信号的变换器。传感器作为汽车电控系统的关键部件,它直接影响汽车的技术性能的发挥。目前,普通汽车上大约装有10-20只传感器,高级豪华轿车则更多,这些传感器主要分布在发动机控制系统、底盘控制系统和车身控制系统中。 相似文献
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1前言
现代汽车电子控制技术是把电子技术和汽车融合为一体的机电一体化技术.随着电子技术、计算机、电子传感器技术的高速发展,电子和微电子等高新技术在汽车产品上大量应用,使汽车电子控制成为汽车发展的主要趋势之一.上海通用汽车有限公司正是顺应了这种技术发展趋势,在新近推出的别克轿车中,将新一代汽车电子控制技术应用提高到一个更高水平. 相似文献
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近些年,随着时代的进步,电子信息与计算机技术水平不断提高,加快了汽车电子化进程。传统机械系统与汽车高功能需求不相符。基于此,针对智能传感器技术,本文结合其定义、类型及技术有点,分析了电子传感器智能化发展的必然性,从汽车制动系统、温度传感器、底盘控制系统、压力传感器及车身操控与导航传感器等方面分析了智能传感器的具体应用。阐述了未来智能传感器发展方向,即集成化设计、智能化发展,由此为智能传感器技术发展提供了更多机遇,很大程度上课保障该技术实际应用效果。 相似文献
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对国外汽车电子控制技术的现状和发展趋势以及国内汽车电子技术与国外的差距作了概要分析。提出发展汽车控制技术,首先要加快发展相关技术既传感器、执行机构的心脏(微特电机)和微电子控制技术(ECU)。 相似文献
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汽车MEMS传感器的发展现状和未来趋势 总被引:1,自引:0,他引:1
微机电系统(Micro-Electro-Mechanical Systems)简称MEMS,是利用微系统设计、微细加工、微型机械组装和封装技术、微系统的表征和测试技术,及微电子技术和微加工技术(包括硅表面和硅体微加工、化学腐蚀或集成电路工艺LIGA和晶片键合等技术)相结合的制造工艺,制造出各种高性价比、微型化、集成化、智能化的传感器、执行器、驱动器和微系统,并应用现代信息技术的最新成果的基础上发展起来的高科技学科. 相似文献
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Rolf Isermann 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2001,36(2):77-117
The development of automotive systems shows an increasing number of sensors, actuators and microelectronic controllers, partially for active driver assistance. However, electronic and electrical components have quite different failure behavior and in general lower reliability than mechanical components. On the other side microcomputers can also be used for fault detection and diagnosis. The contribution therefore shows how model-based fault detection and diagnosis methods together with few available measurements can be applied for automobiles. After an introduction, a short summary is given for fault detection and diagnosis methods, especially for model-based methods. Then some research results are shown, like the fault detection and diagnosis of an electromechanical throttle actuator, a suspension system and the lateral behavior of a passenger car. Finally, methods for fault-tolerant sensors and actuators are discussed which are required for drive-by-wire systems. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(2-3):77-117
The development of automotive systems shows an increasing number of sensors, actuators and microelectronic controllers, partially for active driver assistance. However, electronic and electrical components have quite different failure behavior and in general lower reliability than mechanical components. On the other side microcomputers can also be used for fault detection and diagnosis. The contribution therefore shows how model-based fault detection and diagnosis methods together with few available measurements can be applied for automobiles. After an introduction, a short summary is given for fault detection and diagnosis methods, especially for model-based methods. Then some research results are shown, like the fault detection and diagnosis of an electromechanical throttle actuator, a suspension system and the lateral behavior of a passenger car. Finally, methods for fault-tolerant sensors and actuators are discussed which are required for drive-by-wire systems. 相似文献
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传感器是汽车电子技术领域的绝对核心,随着科学技术的飞速发展,汽车所使用的传感器已高达数百个,各类传感器的组合应用,极大促进了现代汽车电子技术的进步与改革。本文将以传感器在汽车电子技术中发挥的主要作用,以及汽车电子技术发展新常态下对传感器所提出的全新要求为切入点,针对当前车用传感器的主要类型以及传感器在不同位置的具体应用进行初步探讨与分析,希望借此可对相关从业人员起到一定借鉴价值。 相似文献
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Active coolant control strategies in automotive engines 总被引:1,自引:0,他引:1
K. B. Kim K. W. Choi K. H. Lee K. S. Lee 《International Journal of Automotive Technology》2010,11(6):767-772
The coolant flow rate in conventional cooling systems in automotive engines is subject to the mechanical water pump speed,
and high efficiency in terms of fuel economy and exhaust emission is not possible given this limitation. A new technology
must be developed for engine cooling systems. The electronic water pump is used as a substitute for the mechanical water pump
in new engine cooling systems. The new cooling system provides more flexible control of the coolant flow rate and engine temperature,
which previously relied strongly on engine driving conditions such as load and speed. In this study, the feasibility of two
new cooling strategies was investigated using a simulation model that was validated with temperatures measured in a diesel
engine. Results revealed that active coolant control using an electronic water pump and valves substantially contributed to
a reduction of coolant warm-up time during cold engine starts. Harmful emissions and fuel consumption are expected to decrease
as a result of a reduction in warm-up time. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(11):1643-1665
ABSTRACTMost modern day automotive chassis control systems employ a feedback control structure. Therefore, real-time estimates of the vehicle dynamic states and tire-road contact parameters are invaluable for enhancing the performance of vehicle control systems, such as anti-lock brake system (ABS) and electronic stability program (ESP). Today's production vehicles are equipped with onboard sensors (e.g. a 3-axis accelerometer, 3-axis gyroscope, steering wheel angle sensor, and wheel speed sensors), which when used in conjunction with certain model-based or kinematics-based observers can be used to identify relevant tire and vehicle states for optimal control of comfort, stability and handling. Vehicle state estimation is becoming ever more relevant with the increased sophistication of chassis control systems. This paper presents a comprehensive overview of the state-of-the-art in the field of vehicle and tire state estimation. It is expected to serve as a resource for researchers interested in developing vehicle state estimation algorithms for usage in advanced vehicle control and safety systems. 相似文献
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用数字化电控平台实现我国车用柴油机的技术革命 总被引:3,自引:0,他引:3
车用柴油机的使用负荷、运行转速、环境条件不断变化,又经常起动和加速,在这种变工况下,自动控制必不可少。利用现已十分成熟的传感器收集柴油机的负荷、转速、压力、温度等信号,经过高速微处理器的处理,可以通过适当的执行器实现各种各样的控制任务。具体介绍了在起动控制,进排气控制,增压控制,排气再循环控制,及润滑、冷却控制的过程中使用电子控制所带来的好处。 相似文献