基于液压动力学的蓄能器参数敏感性分析

Parameter sensitivity analysis of accumulator based on hydraulic dynamics

为了定量描述蓄能器参数对混凝土泵液压系统响应时间的影响程度,提出了基于液压动力学的蓄能器参数敏感性的分析方法。将混凝土泵液压系统响应时间分为分配油缸换向时间和主油缸换向时间,分别利用液压动力学理论进行了计算。利用蓄能器参数的敏感性因子,从工程化角度分析了蓄能器参数对液压系统响应时间的敏感性。结果表明,蓄能器容积V0对液压系统响应时间影响最大,其次是蓄能器的最高工作压力p1,再次是蓄能器的充气压力p0。蓄能器参数敏感性分析的结果为混凝土泵液压系统的设计提供了理论依据。

In order to quantitatively describe the influence on response time of the concrete pump hydraulic system by accumulatorparameters, the method for parameter sensitivity analysis of accu- mulator was proposed based on hydraulic dynamics. Response time of concrete pump hydraulic system was divided into switching time of distribution cylinder and main cylinder, and calculated individu- ally by using hydraulic dynamics theory. By using the sensitivity factor of the accumulator parameters, the sensitivity of hydraulic system response time by accumulator parameters from the view of engineering. The results show that the accumulator volume V0 has the biggest influence on hydraulic system response time, followed by the highest charging pressure Pl and the air pressure P0 of accu- mulator. The accumulator parameter sensitivity analysis results have laid a theory basis for concrete pump hydraulic system design.