设计了一种比例电磁阀内置式连续阻尼可调(Continuously Damping Control,CDC)减振器,分析了其主要结构组成及工作原理,并基于流体力学建立了参数化仿真模型.通过仿真和试验的方法获得了该CDC减振器的示功特性曲线和速度特性曲线,并从2组特性曲线的形态变化来分析了其阻尼特性的可调范围和调节特点.结果表明:仿真和试验结果相对误差小于10％,仿真模型准确有效;该CDC减振器的阻尼力随着激励电流的增大而减小,这种减小趋势的速率随着激励电流的增加先增大后减小;速度特性曲线的斜率在"拐点速度"之前逐渐变大,在"拐点速度"之后基本不变,且随着激励电流的增大而逐渐减小;该CDC减振器在复原行程的阻尼力可调范围为1544～4914 N,压缩行程的阻尼力可调范围为-1415～-1937.7 N.
Design and Validation of a CDC Damper with a Built-in Proportional Valve
A continuously damping control(CDC)damper with a built-in proportional valve was designed and introduced,the damping mechanism was introduced and damping force simulation model was built.To validate the correctness of simulation model,the damping force-stroke characteristics and force-velocity characteristics were obtained through simulation and physical samples measurements.Results shown that,there is a good consistency between simulation and testing due to the deviation in damping characteristics is less than 10％.The damping force were decreased by the increasing of excitation current,and the change speed of this change trendy is from positive to negative.Force-velocity characteristics shown that the slope of damping curve increased before"knee velocity",but kept in linear after"knee velocity".Damping force can be tuned from 1544 N to 4914 N in rebound stroke,and tuned from-1415 N to-1937.7 N in compression stroke.
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