压力阀特性的好坏直接影响减速顶的性能,而压力阀系统中影响其动态特性的参数很多,如弹簧刚度、阻尼管直径和长度、压力腔充氮容积、阀座导流长度以及阀芯与柱塞内孔的配合间隙等,以往压力阀设计一般是凭经验或根据试验选取各参数,这样一方面有着很大的盲目性,另一方面试 Pressure valve characteristics of a direct impact on the performance of the deceleration top, and the pressure valve system to affect the dynamic characteristics of many parameters, such as spring stiffness, diameter and length of the damping tube, the pressure chamber volume of nitrogen, seat diversion and spool length And the plunger bore with the gap, the past pressure valve design generally based on experience or according to the test to select the parameters, so that on the one hand has a lot of blindness, on the other hand the test