【摘 要】
：
汽车乘员舱内部空调出风口的尺寸与出风速度对乘员舱内部的热环境有重要影响.本文以乘员舱内4个空调出风口的长和宽作为设计变量,以满足乘员的热舒适性与整车燃油经济性为目标,寻找空调出风口尺寸与风速的最优组合.对优化问题参数化后,通过DOE方法选取样本点,采用响应面法建立近似模型,然后采用连续二次规划法NLPQL和混合整形优化法MOST联合对近似模型进行优化.通过对比验证了这种优化方式对乘员舱内人体的热舒
论文部分内容阅读
汽车乘员舱内部空调出风口的尺寸与出风速度对乘员舱内部的热环境有重要影响.本文以乘员舱内4个空调出风口的长和宽作为设计变量,以满足乘员的热舒适性与整车燃油经济性为目标,寻找空调出风口尺寸与风速的最优组合.对优化问题参数化后,通过DOE方法选取样本点,采用响应面法建立近似模型,然后采用连续二次规划法NLPQL和混合整形优化法MOST联合对近似模型进行优化.通过对比验证了这种优化方式对乘员舱内人体的热舒适性有显著提高.
其他文献
An important issue in the analysis of integral bridges is how to model the interaction of abutments,foundations and piles with their surrounding soil.In recent years,various studies have been conducte
In Japan,the seismic design code of infrastructures has been revised and their seismic performance has been improved,whenever those were severely damaged under large earthquake,Japan Road Association
The designs of cable supported bridges,and the movements they experience,are typically considerably more complex than those of other bridge types,increasing both the importance of inspection and maint
As it is well known that Greece has a moderate to high seismic hazard,and Athens is on the moderate scale of the Greek Seismic Zonation Map,the Stavros Niarchos Foundation (SNF),which is planned to en
Self-driving car navigation with obstacle avoidance problem is a hot topic in academic world.The goal of this problem is to design an autonomous car with learning ability to find a collision-free path
The formability of aluminium alloy impact bar by pulsating hydroforming process of was examined at different warm temperature.The results suggested that the formability of aluminium impact bar was lar
本文综述了不同机械球磨工艺对碳纳米管(carbon nanotuhes,CNTs)分散性、结构完整性以及最终铝基复合材料力学性能的影响.通过分析上述影响因素,讨论了机械球磨工艺制备轻质高强碳纳米管增强铝基复合材料未来的研究方向.机械球磨，其本质上属于自下而上的一种方法论，即通过对组元进行加工，再将各个组元组装成宏观块体材料。在机械球磨过程中，因为CNT、在尺度上与微米级Al粉更具相容性，所以相对S
连续可变凸轮相位器(CVCP)的控制系统需要满足响应速度快及稳定性好的特点.本文从理论计算角度对CVCP进行了简化分析,建立其数学模型,并在Simulink中搭建了仿真模型对其子系统进行仿真分析,找出了阻尼、油压等参数对系统工作的影响规律.在计算分析基础上制定了三种控制策略,并在不同控制策略下对CVCP进行了性能仿真分析.结果表明:三种控制策略都能使系统有较快的响应速度,但模糊控制具有最好的稳定性
由于轮齿表面剥落部位啮合变形的复杂性和响应信号强耦合,导致诊断齿轮早期故障困难,为解明表面剥落部位啮合引起的时变刚度及响应特征机理,提出了基于边缘接触时变刚度的轮齿表面剥落动力学模型,提出了轮齿表面剥落缺陷的时变刚度算法,采用复合接触刚度模型在长、宽及深三维分析边缘接触对时变刚度激励及响应特征影响.结果表明新模型能够准确计算剥落对时变刚度,响应特性的影响,可为齿轮系统状态辨识提供重要参考价值.
Driving blind area is divided into human visual blind area,body inherent blind area and dynamic traffic blind area.The paper analyzes the cause of blind area,and provide engineering feasible scheme av