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1、1,14th 15th January 2004, Bosch Rexroth in China,4WRL(E)-63X(RV2-PL2),精度很高, 响应很快, 滞环: 0.1 % ; Scarcely measurable ! Zero-Adjustment: 1 % Manufacure tolerance for Qmax: 10% Termal drift: Zero point displacement 1% , at T=400C 响应 Time : 25, 26, 32, 90 ms ( X=100bar, 100% ) Switch off behaviour: Pilot
2、valve in fail safe, Main stage to spring centred off set position:16% PB/TA! 相频(NG10)： 100 %：18 Hz 5 %： 40 Hz 伺服级的参数,2,14th 15th January 2004, Bosch Rexroth in China,4WRV(E)H-10,16,252X(HRV2),精度很高, 响应很快, 滞环: 0.1 % ; Scarcely measurable ! Zero-Adjustment: 1 % Manufacure tolerance for Qmax: 10% Termal
3、 drift: Zero point displacement 1% , at T=400C 响应 Time : 12, 15, 23 ms (X=100bar,100%) Switch off behaviour: Pilot valve undefinde, Main stage PA/TB or PB/TA! 相频(NG10)： 100 %：40 Hz 5 %： 80 Hz 1 %： 100 Hz 伺服级的参数,3,14th 15th January 2004, Bosch Rexroth in China,HI,4,14th 15th January 2004, Bosch Rexro
4、th in China,Valves with torque motor,4WRGE1025/1X 精度很高, 响应很快 滞环： 0.05 % ； 灵敏度: 0.02% Zero-point: 2 % Zero-ponit drift with change in: Temp: 0.2%/10k Pressure 0.02%/100 bar Return flow pressure 0 to 10% from p 0.01% 响应(相频NG10)： 100 %： 26 Hz 25 %： 60 Hz 5 %： 120 Hz,5,14th 15th January 2004, Bosch Rexr
5、oth in China,Valves with torque motor,4WRDE1032/5X 精度很高, 响应很快 滞环： 0.2 % ； 灵敏度: 0. 1% Zero-point: 2 % Zero-ponit drift with change in: Temp: 0.7%/20k Pressure 0.5%/100 bar Return flow pressure 0 to 10% from p 0.2% 响应(相频NG10)： 100 %： 36 Hz 25 %： 100 Hz 5 %： 150 Hz,6,14th 15th January 2004, Bosch Rexro
6、th in China,7,14th 15th January 2004, Bosch Rexroth in China,3-way servo solenoid valve cartridge type,精度很高, 响应很快, 滞环: 0.1 % ; Scarcely measurable ! Zero-Adjustment: 5 % Manufacure tolerance for Qmax: 10% Termal drift: Zero point displacement 1% , at T=400C 响应 Time : 33, 28, 60 ms (A-X, px=100bar, p
7、A=50bar,0100% ) 相频(NG10)： 100 %：30 Hz 5 %： 45 Hz 伺服级的参数,8,14th 15th January 2004, Bosch Rexroth in China,9,14th 15th January 2004, Bosch Rexroth in China,10,14th 15th January 2004, Bosch Rexroth in China,Servoventil 4WS2EM6-2X/.Merkmale,11,14th 15th January 2004, Bosch Rexroth in China,Technischer V
8、ergleich 2-stufige Servoventile,12,14th 15th January 2004, Bosch Rexroth in China,13,14th 15th January 2004, Bosch Rexroth in China,Servo Valves ;3-stage 相关参数（带机械和电气反馈）,4WS(E)3EE16 精度很高, 响应很快, 机械反馈+E-Feedback 滞环： 0.2 % ； 灵敏度: 0. 1% Reversal span: 0. 1% Zero-point: 2 % Zero drift with change in: Temp
9、(Fliud): 0.5% / 20k Temp(Ambient): 1.0% / 20k Pressure 0.5% / 100 bar Return flow pressure 0 to 10% of pp 0.2 % 频响(相频NG6)： 100 %： 60 Hz 25 %： 120 Hz 5 %： 190 Hz,14,14th 15th January 2004, Bosch Rexroth in China,Servo Valves ; 2-stage：参数比较： 仅带机械反馈和带机械及电气反馈的伺服阀,4WS(E)2EM16 精度很高, 响应很快, 仅机械反馈 滞环： 1.5 %
10、； 灵敏度: 0. 2% Reversal span: 0. 3% Zero-point: 3 % Zero drift with change in: Temp(Fliud): 1.5% / 20k Temp(Ambient): 1% / 20k Pressure 2% / 100 bar Return flow pressure 0 to 10% of pp 1% 频响(相频NG6)： 100 %： 60 Hz 25 %： 70 Hz 5 %： 75 Hz,4WS(E)2ED16 精度很高, 响应很快, 机械反馈+E-Feedback 滞环： 0.5 % ； 灵敏度: 0. 1% Reve
11、rsal span: 0. 2% Zero-point: 2 % Zero drift with change in: Temp(Fliud): 1.2% / 20k Temp(Ambient): 0.5% / 20k Pressure 1% / 100 bar Return flow pressure 0 to 10% of pp 0.5% 频响(相频NG6)： 100 %： 60 Hz 25 %： 110 Hz 5 %： 180 Hz,15,14th 15th January 2004, Bosch Rexroth in China,Fixed pumps,Variable pumps,F
12、ixed motors,Variable motors,A2FO Size 5.1000,A4FO Size 16.500,A4VSG Size 40.1000,A4VSO Size 40.1000,A10VSO Size 10.140,A2V Size 250.1000,A7VO Size 55.1000,A4VB Size 450,A2FM Size 5.1000,A4FM Size 22.500,A10FM Size 18.63,A4FP Size 32.500 2A4FP Size 200.500 A10FP Size 18,A6VM Size 28.1000,A10VM Size 2
13、8.85,IV 2017-e / VAV 05.00,博世力士乐公司工业用的轴向柱塞产品,16,14th 15th January 2004, Bosch Rexroth in China,A4VSO泵的变量机构概述,不就变量机构而谈变量机构, 而就液压系统所存在的缺陷而谈如何改善这些缺陷! 如何使液压系统达到一个理想的境界!,14th 15th January 2004, Bosch Rexroth in China,恒压变量控制机构DR,系统的压力：p= pDR 系统的流量：Q= 系统所需 系统的功率利用率： 50%,pmax,DR,Q,p,有用功率：Po*Qo,节流损失,溢流损失,角功率
14、：Pmax*Qmax,18,14th 15th January 2004, Bosch Rexroth in China,恒压变量控制机构DR,恒压源 只提供系统所需要的流量，理论上无能量损失；所以加上恒压变量机构后，系统可以节能，避免系统过热。 其作用与溢流阀截然不同！ 可实现遥控（DRG）。 考虑到总的装机功率，多用于蓄能器回路。,19,14th 15th January 2004, Bosch Rexroth in China,遥控恒压变量控制机构DRG,14th 15th January 2004, Bosch Rexroth in China,DR(DRG)泵的结构,21,14th
15、15th January 2004, Bosch Rexroth in China,同步控制变量机构DP,p1,p2,（p2）XA=Ff,22,14th 15th January 2004, Bosch Rexroth in China,同步控制变量机构DP,（p2）XA=Ff,（ p2）XA=Ff,所有的泵的（p1+ p2）相同（同一压油口，同一溢流阀），已回到零位的泵的p1比较大，处于最大摆角的泵的p1比较小，所以处于最大摆角的泵的p2比较大。,23,14th 15th January 2004, Bosch Rexroth in China,同步控制变量机构DP,24,A4 LR3GN control overview / VST3/H, Lo 12.AA14th 15th January 2004, Bosch Rexroth in China,A4VSO.LR3GN,A4VSO.LR3GN,25,14th
