直驱泵控式液压机液压系统的动态特性仿真及优化.pdfVIP

43 7 V ol. 43 l 7 2009 7 JOURNAL OF XIcAN JIAOT ON G U NIVERSIT Y Jul. 2009 1 , 2 1 1 3 , , , ( 1. , 7 1004 9, ; 2 . , 244000, ; 3. , 7 12009, ) , , , . , , ODE . , . , 01 031 1 , . ; ; ; T G3851 1 A 025329 87X( 2009) 0720079205 Dynamic Simulation and Optimization of Hydraulic System for New Directly2Driven Pump Controlling Hydraulic Press WEI Shu gu o 1, 2 , ZH AO Sh engdun 1 , ZH ANG Lijun 1 , H AN Yaop eng 3 ( 1. School of Mechanical Engineerin g, Xican Jiaot ong Un iver sit y, Xican 7 10049, China ; 2. Depart men t of M echani cal En gineering, Tongl ing U niver s ity, T ongling, Anhui 244000, China ; 3. N ort hwest Elect romechanical Engineering Inst it ut e, Xianyang, Shaan xi 7 12099, China) Abstract A dynam ic m at h ematic m odel of th e dir ect ly2driven hy drau lic press hydr au lic syst em is const ru ct ed by means of power b on d graph s to describe t h e r elat ion sh ip b etween input and output an d comp letely con sider n on lin earit y in hy drau lic sy st em. T h e in flu ences of load, p ipe lin e diam e2 t er and pump damp ing of th e hydraulic syst em on t h e dyn amic ch aract erist ics are revealed. Som e primary paramet er s are opt imized by m ean s of ODE convert er t echniqu e b ased on optim izat ion of dyn am ic pressure response t o out let of hydraulic cylin der . T h e r esult s sh ow t h at hydraulic pip e dia