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AssigneeHaestad Methods, Inc.
InventorsEzio Todini, Michael E. Tryby, Jack S. Cook, Thomas M. Walski, Robert F. Mankowski
Estimating the term…
A method for estimating the relative speed factor parameter for a variable speed pump in a hydraulic network sufficient to maintain a fixed pressure at a control node is provided. A desired operating characteristic is determined and this is inserted into a matrix of equations describing the hydraulic system. The largely symmetrical matrix includes certain aspects of the system representing the variable speed pumps which are non-symmetrical. Non-symmetrical portions of the matrix are separated out and solved using an LU factorization technique. Non-sparse, non symmetric matrices are generated and the difference in head correction is solved for to compute the updated nodal head vector and ultimately determine the variable pump speed parameter. The invention allows estimation of the variable speed factor for a variable speed pump drive sufficient to maintain a fixed pressure at a control node. The system fully integrates variable pump speed operation with the status and control capabilities of known hydraulic network solvers.
A computer readable medium for estimating parameters for a variable speed pump for a hydraulic network solver application which uses nodes and links to describe a hydraulic network, comprising program instructions for performing the steps of:
A system embodied in a software program for estimating parameters for variable speed pumps in hydraulic networks in association with an hydraulic network solver program that produces an hydraulic network model from an associated database describing the elements of the hydraulic network, comprising:
A computer implemented method of estimating parameters for a variable speed pump using a hydraulic network solver application, the computer implemented method comprising the steps of:
Dependencies are inferred from the claim text.