外文翻译—汽车磁流变阻尼器的结构设计.doc

毕业论文（设计）外文翻译 姓名：张志超 班级：机械A0621 课题名称：汽车磁流变阻尼器的结构设计 指导老师：肖静 随着人们生活水平的提高，对汽车舒适性和操作稳定性提出了更高的要求虽然车的性能可以量化的许多方面，质量和两个方面的性能直接关系到车辆悬挂系统。一般来说，车辆展示良好的平顺性的特点是低率，低衰减率。车辆展示良好的一般悬浮弹簧和阻尼高利率，。虽然被动悬架系统，现代汽车水平的处理和平顺性的共同条件下，这些系统通常不适合用于任何特定类型的地形。 被动悬架的性能，平顺性，和控制机构悬挂系统是实现车辆乘坐舒适性和驾驶安全。被动悬架系统的目的是为了这些目标之间获得一个良好的，但内在的限制使他们无法获得最佳。与被动悬架系统，和半主动悬架系统可以实现更好的在各种驾驶汽车车辆性能一直是将近一个世纪工业研究和发展。汽车悬架向着智能化发展。全主动悬架性能较好，可是能耗高，制造复杂。半主动悬架有着和全主动悬架相似的性能。磁流变减振器作为半主动悬架的重要执行元件，它的阻尼力在输入电流的控制下能够实现无级变化，响应速度快，能耗低，便于控制，结构简单，越来越受到人们的重视。本设计参考了其他减振器设计资料，在现有筒式减振器的基础上，保留其外型尺寸，设计成为磁流变减振器。主要进行的工作有结构参数的确定、磁路设计、零件三维建模、绘制主要零件加工图纸、对活塞部分进行磁路有限元分析，并对设计尺寸提出改进。With the improvement of peoples living, the right vehicle comfort and operational stability of the higher demand. While vehicle performance can be quantified in many ways, ride quality and handling are two aspects of performance directly related to the vehicle suspension system. Generally speaking, vehicles exhibiting good ride quality are characterized by suspensions with low spring rates, low damping rates, resulting in large suspension travel. Vehicles exhibiting good handling generally incorporate suspensions with high spring and damping rates, resulting in small suspension deflections. While the refinement of passive suspension systems for modern automobiles has resulted in acceptable levels of both handling and ride quality under common road conditions, these systems are not typically optimized for any particular type of terrain. Passive suspension performance characteristics still represent a major compromise between ride quality, handling, suspension travel, and controlling body motion. The suspension system is the main tool to achieve ride comfort and drive safety for a vehicle. Passive suspension systems have been designed to obtain a good compromise between these objectives, but intrinsic limitations prevent them from obtaining the best performances for both goals. Compared with passive suspension systems, active and semi-active suspension systems can achieve a be