Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Reexamination Certificate
2011-01-25
2011-01-25
Lazo, Thomas E (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
C091S454000
Reexamination Certificate
active
07874152
ABSTRACT:
A machine, such as a backhoe, has a series of components connected in series and moved by separate hydraulic actuators. A position estimator determines the present position of each component from the load acting on the associated hydraulic actuator and a velocity command for the component. For each component, a function parameter estimator uses the present positions of the components to derive a set of parameters that include a static structure load that the components exert on the associated hydraulic actuator, acceleration and deceleration limits for both directions of component motion, and a control bandwidth for the associated hydraulic actuator. The set of parameters for a given component is used to control the associated hydraulic actuator.
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Haas George E.
INCOVA Technologies, Inc.
Lazo Thomas E
Quarles & Brady LLP
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