..............page:6-9,25
A High-Power Low-Logic Voltage DC Motor Driver
chen xi1; sui long2(1.college of information and communication engineering; harbin engineering university; harbin 150001; china; 2.college of mechanical electrical engineering; harbin engineering university; harbin 150001; china)
..............page:10-13
Control System for Motor Driving Oil Well Sucker Rod Pumping Unit
zhang xi-jiang1; guo meng-qi2; zou wan-yu3(1.cnpc bohai equipment chengde petroleum machinery co.; ltd.; chengde 067000; china; 2.cnpc bohai equipment manufacturing co.; ltd.; tianjin 300457; china; 3.xinxiang xiafeng electrical appliance co.; ltd.; huixian 453621; china)
..............page:57-60
..............page:39-42,63