3HELDUSER S. Electric-hydrostatic Drive-aninnovative En- ergy-saving Power and Motion Control System [ C ]. Proc. Inst. Mech. Engrs, 1999,213 ( 5 ) :427 - 437.
4BURMAN Richard, Design Systems and Communication Links [ J ]. Automotive Engineer, 1997,22 ( 10 ) : 32 - 34.