5Song Liu Bin Yao, Energy-Saving Control of Single-Rod Hydraulic Cylinders with Programmable Valves and Improved Working Mode Selection, 中国期刊网, www.cnki.hznet.com.cn, 2002.1.
6O Johnson, Speed Control by Hypersensitive Load System[J].HYDRAULICS & PNEUMATICS, 1995, (3).
7SongLiu BinYao.Energy-saving control of single-rod hydraulic cylinders with programmable valves and improved workingmode selection [ J/OL].中国期刊网, www. cnki.hznet.com. cn,2001.1.
