A novel piezoelectric type nozzle flapper hydroelectric servo valve was developed and its control method was researched. 摘要提出了一種新型壓電晶片型噴嘴擋板式電液伺服閥，並對其控制方法進行了研究。
This paper develops a direct-drive electrohydraulic servo valve of a completely new structure. 研製了一種全新結構的直接驅動電液伺服閥。
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