航空泵加速寿命试验台功率回收率的分析

Analysis on power recovery rate of the accelerated life test-bed for the airborne hydraulic

航空泵加速寿命试验具有试验时间较长及功率消耗多的特点,针对这类问题,提出了采用基于功率回收原理的机械补偿功率回收方法来节约能源;研究了试验系统实现功率回收必须满足的流量匹配条件;从理论上推导了功率回收率的计算公式;分析了影响系统功率回收率的因素.通过试验方法,验证了不同的工况下功率回收率的影响因素,并且分析了功率回收率的实际值与某工况下的理论计算值存在差距的原因.研究结果表明:该类功率回收方法显著降低了加速寿命试验过程中的功率损耗,具有显著的节能效果.

In view of the accelerated life testing（ALT） for the airborne hydraulic has the characteristics of long test time and many power consumption,the mechanical compensation method to save energy was brought forward based on the power recovery principle.To realize power recovery,the flow matching condition which the test system must meet was studied.In theory,the calculating formula of the power recovery rate was derived,the influencing factors of the power recovery rate was analyzed.Through the test method,the influencing factors of the power recovery rate under the different conditions was verified,the reason for the inconsistent power recovery rate of the actual and the theoretical was also analyzed.The result indicates that the type of the power recovery method can significantly reduce the energy consumption during the ALT and has obvious energy saving effect.