Communication failure tolerant distributed kalman filter

摘要

A method and system include a distributed network of filters having a topology corresponding to an interconnection map of a process to be controlled, each filter modeling a sub-process of the process. Each filter is interconnected to receive an input vector of process measurements corresponding to a local state of the process and to receive process variables. The filters are adapted to determine a communication failure and responsive to the communication failure, correlations of the local state with the state of subsystems estimated by filters that are not accessible due to the communication failure are set to zero and wherein a local state covariance is increased.

主权项

1. A system comprising:
a distributed network of filters having a topology corresponding to an interconnection map of a process to be controlled, each filter modeling a sub-process of the process; each filter interconnected with other filters to receive input vectors of process measurements from other filters corresponding to their local state of the process; wherein the filters are adapted to determine a communication failure and responsive to the communication failure, correlations of the local state with the state of subsystems estimated by filters that are not accessible due to the communication failure are set to zero and wherein a local state covariance is increased; and in further response to the communication failure, when a mean value prediction of a particular interconnection input cannot be obtained from an upstream neighbor, the filters are adapted to use an unknown observer model to replace interconnection inputs.