Hydropneumatic drive apparatus

Details Hydropneumatic drive apparatus Hydropneumatic drive apparatus

F - Mech Eng,Light,Heat,Weapons

15

B

138/67

F15B 11/00 (2006.01) F15B 11/076 (2006.01)

Patent

CA 1213191

-16- Abstract of the Disclosure An active pneumatic mechanism and a passive hydraulic mech- anism of the apparatus are so connected with each other and with a driven member that movement imparted by the pneumatic mechanism to the driven member produces, and is controllable by restriction of, hydraul- ic fluid flow within the hydraulic mechanism. Restriction of the fluid flow to any desired extent is accomplished by command signals directed by a control computer to a valve that preferably is of the type actu- able by a torque motor. The command signals produced by the computer are based upon a correlation of data supplied by a computer program with data supplied by a monitor of the positions of the driven member along its path of travel. Precise control of the speeds, accelerations and positions of the driven member are realized.

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