Motors: expansible chamber type – Working member position feedback to motive fluid control – Electrical input and feedback signal means
Patent
1997-12-05
2000-10-17
Lopez, F. Daniel
Motors: expansible chamber type
Working member position feedback to motive fluid control
Electrical input and feedback signal means
91363R, 91454, F15B 909
Patent
active
061315001
ABSTRACT:
This disclosure is directed to novel systems and methods for producing motion in response to a drive signal where the motion has a smooth translational reversal. The system accepts a command position signal and compares the command position signal to the actual position of a linear actuator to develop a position error that is then conditioned to produce a pair of valve drive signals that command series connected proportional valves that supply the linear actuator from a common connection of the valves with fluid flow and pressure to adjust the position of the linear actuator so as to reduce the position error by imparting motion to the linear actuator, thus imparting motion to a load. The conditioning of the valve drive signals includes the processing of the position error and the application of a quiescent drive signal to develop or nearly develop a quiescent fluid flow through the series connected valves. The quiescent drive signal can be automatically or manually developed. If gravitational force or other forces sufficient to return fluid from the translational driver, only one pair of proportional valves are needed. If the translational driver must be driven in both directions then two pairs of proportional valves are needed and are connected such that each set can produce motion in opposition directions. The system may be embodied as a driving simulation motion apparatus for entertainment or training purposes.
REFERENCES:
patent: 3954046 (1976-05-01), Stillhard
patent: 4416187 (1983-11-01), Nystrom Per H. G.
patent: 4437385 (1984-03-01), Kramer et al.
patent: 4727791 (1988-03-01), Satoh
patent: 4870892 (1989-10-01), Thomsen et al.
patent: 5199875 (1993-04-01), Trumbull
Yeaple, "Electrohydraulci Valves and Servosystems", in Fluid Power Design Handbook (New York, Marcel Dekker, Inc. 1996) pp. 82-88.
Fish Ronald C.
Lopez F. Daniel
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