与双出杆阻尼器相比，单出杆阻尼器有较大的行程，更适合应用于安装空间有限的领域。设计用于平衡活塞杆进出缸
体而造成缸体内体积变化的蓄能器是设计单出杆阻尼器的关键技术之一。首先推导了含有弹簧活塞蓄能器的单出杆磁流变阻尼器
的阻力计算公式，并分析了阻力的性能特征；而后，讨论了普通弹簧活塞蓄能器的主要参数确定方法与在体积补偿过程中所存在
的主要缺陷；最后结合形状记忆合金的超弹性特性，提出了基于超弹性形状记忆合金弹簧的活塞蓄能器，并给出了相关设计方法。

ABSTRACT
Compared to the double ended magnetorheological (MR) dampers, single-ended MR dampers are more suitable in
limited-space required fields for their larger strokes. An accumulator is needed for a single-ended MR damper to balance the
volume changes as the piston pushed out and into of the cylinder. Since an accumulator has a great influence on the damper's
performances, this influence should be taken into account in the damper's designing procedure. In this paper, damping force
formula is deduced for the single-ended MR damper with spring accumulator. Then both the method of determination main
parameters of regular spring accumulator and its inherent drawbacks are presented. Finally, by utilizing the super elastic
character of shape memory alloy (SMA), a SMA spring accumulator is proposed and its design method is given as well.