Appeal No. 2003-0085
Application No. 09/463,925
As noted on page 1 of the specification, appellants'
invention relates to a method and/or device for modeling a
hydraulic system having two peripheral volume storage vessels,
each of which is connected to a central volume storage vessel by
a valve, based on a hydraulic model, i.e, a method for estimating
pressure and/or volume changes in the hydraulic system in
response to external changes. Appellants indicate that an
objective of the present invention is to provide a system which
is able to respond faster to pressure differences between the
peripheral volume storage vessels than known methods or systems.
More particularly, appellants use a method and/or device for
estimating pressure and/or volume changes based on a hydraulic
model in a hydraulic system having two peripheral volume storage
vessels, each of which is connected to a central volume storage
vessel by a valve, wherein the estimate is based at least at
times on a model in which a direct connection to the peripheral
volume storage vessels exists, regardless of whether the
peripheral volume storage vessels are simultaneously connected
directly to each other. Appellants' model used in the method
and/or device is shown in Figure 3 of the application drawings
and its function in the context of control of a hydraulic braking
system like that in Figure 1 of the application during a braking
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