发明名称 |
Method of driving an hydraulic actuator by means of a pressure controlled proportioning solenoid valve |
摘要 |
A method of driving a hydraulic actuator provided with a pressure-controlled proportioning solenoid valve; the method includes the steps of: determining a first open-loop contribution according to a pressurized oil flow rate which crosses the proportioning solenoid valve and according to the desired load pressure inside the actuation chamber; determining a second open-loop contribution according to the desired position of the spool of the proportioning solenoid valve; determining a third closed-loop contribution according to the difference between a desired value of the position of the mobile piston and a real value of the position of the mobile piston; and calculating a desired electric driving current value of the proportioning solenoid valve by means of an algebraic sum of the three contributions. |
申请公布号 |
US8191456(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20080292792 |
申请日期 |
2008.11.26 |
申请人 |
FUSARI ALESSANDRO;MACHETTO PAOLO;RAGAZZI ROBERTO;MAGNETI MARELLI POWERTRAIN S.P.A. |
发明人 |
FUSARI ALESSANDRO;MACHETTO PAOLO;RAGAZZI ROBERTO |
分类号 |
F15B9/09;F15B13/044 |
主分类号 |
F15B9/09 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|