damper n. 1.使人扫兴的人[事]。 2.【音乐】(钢琴的)制音器。 3.【电学】阻尼器;减震器。 4.(火炉等的)风门,节气闸。 5.〔美俚〕现金记录机。 6.〔澳大利亚〕(在篝火上烤的)硬烧饼。 an air damper 气压制动器。 an acoustical damper消声器。 damper pedal 制音踏板。 cast a damper on 使…扫兴。
active adj. 1.活动的,有活动力的;【生物学】活性的;【电学】有功的;【无线电】有源的;【物理学】放射性的。 2.有生气的,活泼的,灵敏的,敏捷的;主动的,能动的,积极的;有力的,勤勉的;【医学】有特效的。 3.现行的,活动中的;【军事】现役的。 an active demand 畅销。 an active volcano 活火山。 The market is active. 市场活跃。 active measures 积极手段。 on active service 【军事】现役,现役中的。 take an active part [interest] in 积极参加。 adv. -ly 活跃地;积极地,能动地;【语法】主动地。 n. -ness 活跃,积极性。
be active in 对…很积极; 活跃于; 积极参加; 积极于; 在......里活跃; 在……活跃
Active dampers designed according to the second principle are divided into magnetorheological ( mr ) damper and electrorheological ( er ) damper . mr fluids , characterized by a dynamic yield stress in the presence of a magnetic field , have been viewed as a kind of important actuating material in intelligent structures . due to their virtues of fast response , low energy dissipation , outstanding rheological effect , less sensitive to contaminants and stability in temperature , mr fluids have been proposed for wide variety of automotive dampers for active damping 电流变体存在剪切屈服应力小、要求的电压高等不足,而磁流变体的屈服应力大,响应速度快、能耗低、显著的流变效应、对污染的不敏感等特点,磁流变体一直是智能结构领域的理想执行(作动)器材料,磁流变阻尼器的研究和开发逐渐成为各国学者和工程技术人员追踪的热点,磁流变体也逐渐成为汽车智能阻尼器的首选材料。
The automotive semi - active suspension systems , which consist of passive springs and active dampers with adjustable damping force for different road conditions and automobile running conditions , are the most popular automotive suspension systems due to the active suspension ' s high cost and passive suspension ' s limited performances 鉴于汽车全主动悬架系统高额的价格和被动悬架性能上的不足,由被动弹性元件和主动阻尼器构成的半主动悬架越来越受到相关研究机构的关注,并逐渐成为研究热点,也受到全球汽车制造商的青睐。
Chapter 1 begins with a historical survey into semi - active suspension technology , the initial product , developing of the semi - active suspension and status of its control are generalized , further requirement of technics and problems to be investigated are pointed out on this chapter . then it presents a new idea in design active damping suspension systems . also discussed are the subject and significance of the thesis and the content of this research 第一章综述了半主动悬架的产生、发展及其控制现状,在此基础上指出了该技术的进一步要求和所需研究的问题;其次对各种悬架减振元件的发展进行了系统的分析比较;接着提出了一种新型的基于主动力反馈原理的半主动液压阻尼悬架的实现构想;最后概述了论文的选题意义和研究内容。