1Dipl.-Ing, Walter Lenz. Eevelopments in hieh performance proportional Valves withcanopen fieldbus interface[R]. Tampere:The Sixth Scandinavian International Conference on Fluid Power,1999.
2Martin Wollschlaeger, Erik Unger, Heiko Witte. CAN Open Device profile for hydraulic proportional valves, In Fieldbus technology: systems integration, networking, and engineering[ R]. Magdeburg: Pproceedings of the Fieldbus Conference FeT '99, 1999.