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基于数值模拟和试验研究了某SUV主驾驶员座椅在加速时抖动较大的问题,结果表明,主驾驶员座椅2号安装点的振动加速度峰值在44.5 Hz附近远超目标值,是引起座椅抖动较大的主要原因。结合基于平均驱动自由度位移法所获得的理想挂钩布置点、排气系统结构和车身底部空间,优化了挂钩位置。通过挂钩尺寸和搭接结构优化,大幅提高了排气系统挂钩的一阶局部模态。优化方案各挂钩-主驾驶员座椅安装点的振动传递函数峰值明显降低,最大降幅百分比为36.7%。样车道路测试时主驾驶员座椅靠背测点的振动加速度峰值由1.19 mm/s2降至0.66 mm/s2,主观评价结果满足设计要求。 相似文献
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随着消费者购买第2辆汽车的需求增加,消费者对汽车驾乘舒适性要求也逐渐提高,特别对座椅的乘坐舒适性提出了更高要求。传统汽车座椅系统设计没有全面考虑用户的休息情景,造成后期乘坐体验舒适性差。通过前期传统座椅布置设计分析,制定零重力座椅人机布置要求,校核零重力座椅布置优化设计参数,总结了座椅设计开发优化方法。通过改善零重力座椅的人机参数,增添更多座椅使用模式,确保驾乘人员乘坐舒适并成功应用于整车产品市场。 相似文献
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汽车电动座椅与安全带的结构与控制(上) 总被引:1,自引:0,他引:1
详述汽车电动座椅可实现的各种调节功能,介绍其电子控制系统的结构以及自动调节的过程,简述可自动调节的座椅安全带动在车上的布置及功能。 相似文献
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本文通过一些客车驾驶员座椅实测数据进行统计,结合有关标准资料和人体工程要求,对客车驾驶员座椅尺寸进行分析并推荐了有关数据。 相似文献
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传递路径分析法是诊断汽车振动噪声问题准确有效的方法。试验传递路径分析耗时耗力且需要实制样车,为在整车开发初期诊断汽车振动噪声问题,对整车虚拟传递路径分析法进行了研究。首先建立了包含底盘的整车声固耦合有限元模型,采用频率响应法预测车内声学振动响应,发现驾驶员右耳声压在38 Hz处以及驾驶员座椅导轨振动在59 Hz处存在较大峰值。在有限元模型基础上建立了整车虚拟传递路径分析模型,该模型合成的声学振动结果与频率响应法结果吻合较好,验证了模型的正确性。利用虚拟传递路径法对两处峰值作诊断分析,根据分析结果对贡献量大的路径进行优化。优化结果表明,38 Hz处驾驶员右耳声压降低2 dB,59 Hz处座椅振动改善效果明显。 相似文献
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Tankut Acarman Yaodong Pan Ü mit
zgü ner 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2003,39(2):149-187
Summary This paper addresses the problems ensuing with the human being who is controlling the technical system, especially problems related to his skill levels, driving habits, capabilities and decisions (especially when impaired by drugs, fatigue or physical handicaps). It may be possible to improve the ability of a driver to operate a vehicle safely if certain parameters in the control of the vehicle are adjusted according to the driver's normal characteristics. Value has already been established for tailoring certain attributes such as seat, pedals, steering wheel position and mirrors to a given driver through memory functions. This research concentrates on assessing a driver's operating characteristics and modifying the control to improve safe operation of the vehicle on a real-time basis. 相似文献
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I. Ballo 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1995,24(9):683-691
The paper deals with the theoretical estimation of the minimal power requirement, necessary for the operation of the active vibration control system (AVCS), connected with a passive one. It is assumed this compound system is used for the vibration control purposes in the heavy vehicle driver's seats. The systems considered in the paper are of two kinds. In the first case the electro-hydraulic actuator of the AVCS is situated in series to the spring-damper combination of the seat suspension. The second system under consideration is formed by parallel connection of electro-pneumatic actuator and the spring-damper combination of the seat suspension, which is a mechanical model of a real air spring with controlled in-flow and out-flow of the air. The comparison of results for both compound systems shows markedly higher power consumption of the serial system. The theoretical results are in acceptable agreement with the experimental data. 相似文献
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Hyuk Kim Graduate student Yong-San Yoon Professor Ph.D 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1995,24(10):759-780
The objective of this study is to develop a control law for a semi-active suspension for the purpose of ride quality improvement. The semi-active control law is determined by reproducing the control force of an optimally controlled active suspension while suppressing its damping coefficient variation. The performance index of the optimal control for the active suspension is modified to include frequency-shaping by use of Parseval's theorem, which allows us to de-emphasize the effects of particular variables over specific frequency bands.
Through the numerical simulations, it was found that the semi-active suspension may reduce the vertical acceleration of the driver's seat and the sprung mass motions significantly. The road-holding and tire deflections were not affected much. 相似文献
Through the numerical simulations, it was found that the semi-active suspension may reduce the vertical acceleration of the driver's seat and the sprung mass motions significantly. The road-holding and tire deflections were not affected much. 相似文献
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Seung-Bok S. Choi Hyun-Jeong H. Song 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2002,37(3):193-216
This paper presents vibration control of a passenger vehicle using an electronically controllable electro-rheological (ER) engine mount. A mixed-mode ER engine mount operating under the flow and shear modes is devised and manufactured. After establishing the dynamic model of the proposed ER engine mount, both field-dependent displacement transmissibility and dynamic stiffness of the ER engine mount are empirically evaluated. The ER engine mount is then incorporated with a full-vehicle model in order to investigate vibration control performance at the driver's seat position. The governing equation of motion of the full-vehicle model is formulated by considering engine excitation force, followed by designing a skyhook controller to attenuate unwanted vibration. The controller is implemented through a hardware-in-the-loop simulation (HILS), and control responses such as acceleration level at idle speed are evaluated in the frequency and time domains. 相似文献
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车辆转向操纵过程中驾驶员的生理/心理分析与测试 总被引:1,自引:0,他引:1
本文指出驾驶员在行车过程中的生理/心理状态对其操纵行为有着重要影响,着重探讨了驾驶员转向操纵过程中生理/心理问题,首先对驾驶员行车时的心理进行了分析及描述,提出了一种合格驾驶员的心理模型;然后提出了驾驶员身心反应测试的几项指标,并进行了有关的测试,得到了不同驾驶员在不同车速,不同路线下的生理/心理变化规律,本文为建立一个包括驾驶员心理特性,行为规律的综合模型提供了新的依据。 相似文献
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基于模糊神经网络的驾驶员弯道安全感受预测模型研究 总被引:1,自引:0,他引:1
论述了在人-车-路(环境)系统中驾驶员弯道安全感受的非线性特性。为了体现车辆、道路结构对驾驶员认知过程的作用和认知结果形成的影响,驾驶员弯道安全感受模型采用弯道平曲半径、车辆运行速度和驾驶员驾龄作为道路线形、车辆结构动力性、驾驶员经验的主要特征参数集,在增加积极和消极补偿运算的基础上,构建出模糊逻辑推理规则与神经网络优化逼近运算相互结合的5层推理预测模型,并结合实例数据,进行了对比分析验证,表明5层结构模型能够较好的满足特定弯道条件下驾驶员主观安全感受的认知推理预测要求,能够准确的、稳定的再现出驾驶员主观安全感受同驾龄、平曲半径和车辆运行速度间的相互作用关系。 相似文献