In the leakage characteristic test , the problem of small leakage flow automatic test is solved with the method of usage of an ellipse gear flow meter and a self - made interface circuit . in the dynamic state characteristic test , frequency sweeping and statistic methods are used and their results are compared with 1250 frequency response analyzer 在電液伺服閥動態(tài)測試實驗中,采用了掃頻法和統(tǒng)計法這兩種不同的方法進行測試,并對實驗結(jié)果與1250頻響分析儀所測的結(jié)果作了對比,發(fā)現(xiàn)二者基本一致。