7Masanori ITO, Noriki, HIROSE, Etsuro SHIMIZU. Main Engine Revolution Control for Ship with Direct Drive Volume Control System [J]. ISME TOKYO,2000, (2).
8ITO, H SATO, Y Maeda. Direct Drive Volume Control of Hydraulic System and its Application to the Steering System of Ship [C]. Hayama: FLUCOME'97, (1): 445-450.
9苏文海.[D].哈尔滨:哈尔滨工业大学,2002.
10Quan Long. Differential cylinder servo system based on speed variable pump and sum pressure control Principle [R].Hangzhou :In : 5th ICFP International Conference, 2001.