共查询到19条相似文献,搜索用时 203 毫秒
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汽车工况法废气检测的验证技术 总被引:1,自引:0,他引:1
为验证底盘测功机上汽车工况法检测加载力和车速的准确性,直接从力传感器和速度传感器取出信号,增加一套A/D转换和处理系统,把相关数据远程传送给验证计算机进行计算,作为验证电涡流机检测加载力、车速的真值;探讨了验证技术的5个方面,通过验证加载力、车速及对废气仪、车牌和废气取样管实时录像,用真值准确有效地验证检测值. 相似文献
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文章介绍了一种采用电子式里程表传感器车速检测系统,通过采集电路的隔离设计及优化车速表的输入和输出信号的逻辑处理,保证车速信号的精度和准确性。 相似文献
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汽车车速传感器测试系统的开发 总被引:3,自引:0,他引:3
车速传感器是监测发动机工况的重要部件,对车速传感器的特性加以测试是非常必要的。介绍了针对霍尔车速传感器而研制和开发的汽车车速传感器测试系统。 相似文献
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1.系统组成威驰轿车ABS系统主要包括左前轮车速传感器、右前轮车速传感器、左后轮车速传感器、右后轮车速传感器、ABS ECU及执行器总成、ABS熔丝、ABS警告灯及传统液压制动系统,如图1所示。 相似文献
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霍尔型车速传感器的智能测试系统 总被引:2,自引:0,他引:2
霍尔型车速传感器是现代汽车控制系统的重要部件,对这类传感器的特性加以测试成为测试领域一个重要研究方向,介绍了霍尔型车速传感器及其测试系统的组成,原理和测试方法,并且成功地研制了智能车速传感器测试系统。 相似文献
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本文对汽车车速传感器测试系统的组成和工作原理以及测试项目和方法进行了详细介绍,该系统能得到被测对象性能的准确记录,是基于霍尔车速传感器的全国首创的智能测试系统。 相似文献
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汽车瞬时油耗检测方法与试验分析 总被引:1,自引:0,他引:1
设计了以AT89S8252单片机为核心的汽车瞬时油耗检测系统,该系统利用汽车喷油器脉冲宽度信号和车速传感器信号检测瞬时燃油消耗量,并具有瞬时油耗和百公里油耗实时显示功能.测试结果表明,该检测方法简单,检测数据相对误差小于15%;信号读取无滞后,系统动态特性好,与其它油耗仪相比具有体积小、成本低、操作和维修方便等优点. 相似文献
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吕爱红 《内蒙古公路与运输》2012,(2):52-54
汽车性能相关试验中需要采集到车轮转速,通常采用霍尔式传感器或磁电式转速传感器对车轮转速进行测量,针对车载环境干扰严重的情况,文章基于CAN总线传输技术设计了一种车轮转速测量系统,系统中利用单片机接收转速传感器的信号,处理得到转速之后通过CAN总线将转速数据往外发送,系统测量精度高,适合车载环境下使用。 相似文献
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The main focus of this paper is to compensate the steady state offset error of the 6D IMU which provides the measurements that include the vehicle linear accelerations and angular rates of all three axes. Additionally, the sensor compensation algorithm exploits the wheel speed data and the steering angle information, since they are already available in most of the modern mass production vehicles. These inputs are combined with the inverse vehicle kinematics to estimate the steady state offset error of each sensor inputs as it is done in a disturbance observer, and the raw sensor measurements are compensated by the estimated offset errors. The stability of the error dynamics regarding the integrated signal processing system is verified, and finally, the performance of the system is tested via experiments based on a real production SUV. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(6):705-735
The fault-tolerant control (FTC) of heavy-haul trains is discussed on the basis of the speed regulation proposed in previous works. The fault modes of trains are assumed and the corresponding fault detection and isolation (FDI) are studied. The FDI of sensor faults is based on a geometric approach for residual generators. The FDI of a braking system is based on the observation of the steady-state speed. From the difference of the steady-state speeds between the fault system and the faultless system, one can get fault information. Simulation tests were conducted on the suitability of the FDIs and the redesigned speed regulators. It is shown that the proposed FTC does not explicitly worsen the performance of the speed regulator in the case of a faultless system, while it obviously improves the performance of the speed regulator in the case of a faulty system. 相似文献
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汽车轮胎滚动阻力试验机测试方法分析 总被引:1,自引:0,他引:1
为了对汽车轮胎滚动阻力测试方案的可行性进行预先评估,基于检测设备的结构模型,提出了一种运用位移量对轮胎滚动阻力进行仿真分析的新方法。在简述滚动阻力有限元测试模型构建过程的基础上,通过改变轮胎的外部使用参数,分析传感器板在不同工况下位移场的分布情况,制定了设备的测试方案。以传感器的安装位置作为目标检测点,建立轮胎滚动阻力位移场与控制参数之间的关系曲线。最后将采集的数据经过平均滤波处理,与实验室的实测数据进行了趋势性对比。结果表明:采用该测试方法,轮胎滚动阻力随着轮胎负载和速度的增加而增大,随着气压的变大而减小;仿真结果和试验数据在相同工况下的变化趋势基本一致;该测试方法合理、可行。 相似文献
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Minwoo Soh Hyeongjun Jang Jaehyung Park Youngil Sohn Kihong Park 《International Journal of Automotive Technology》2018,19(6):1001-1012
The main role of the suspension system is to achieve ride comfort by reducing vibrations generated by the road roughness. The active damper is getting much attention due to its reduced cost and ability to enhance ride comfort especially when the road ahead is measurable by an environment sensor. In this study a preview active suspension control system was developed in order to improve ride comfort when the vehicle is passing over a speed bump. The control system consists of a feedback controller based on the skyhook logic and a feedforward controller for canceling out the road disturbance. The performance limit for the active suspension control system was computed via trajectory optimization to provide a measure against which to compare and validate the performance of the developed controller. The simulation results indicated that the controller of this study could enhance ride comfort significantly over the active suspension control system employing only the skyhook feedback control logic. Also the developed controller, by displaying similar control pattern as the trajectory optimization during significant time portions, proved that its control policy is legitimate. 相似文献
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汽车ABS轮速传感器性能测试系统的研究 总被引:1,自引:0,他引:1
设计了汽车ABS轮速传感器性能测试系统,开发了相应的测试与数据采集软件。进行了试验,并对采集到的数据进行分析处理。研究结果表明:该系统工作可靠、实施方便、抗干扰能力强,为研究ABS提供了方便。 相似文献