Method and device for state sensing of technical systems such as energy stores
First Claim
1. A method for state sensing of a technical system, the technical system being an energy store, the method comprising:
- measuring at least one performance quantity;
supplying the at least one measured performance quantity to a state estimation routine for determining at least one state variable characterizing a current system state using a model based on at least one system-dependent model parameter and the at least one measured performance quantity; and
supplying the at least one measured performance quantity to a parameter estimation routine to determine the at least one system-dependent model parameter depending on a use to improve a state estimation;
wherein a selection of at least one of the at least one state variable characterizing the current system state and the at least one system-dependent model parameter determined by estimation depends on a dynamic response of the at least one measured performance quantity.
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Abstract
A method and a device for state sensing of a technical system, such as an energy store, in which performance quantities are measured and supplied to a state estimation routine, which determines the state variables characterizing the current system state using a model based on system-dependent model parameters and the measured performance quantities. To improve state estimation, the measured performance quantities may be supplied to a parameter estimation routine, which performs a use-dependent determination of the model parameters. To increase the quality of the estimation and reduce the calculating time and the memory requirements, a selection of state variables and/or parameters determined by estimation are performed depending on the dynamic response of the measured performance quantities.
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Citations
12 Claims
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1. A method for state sensing of a technical system, the technical system being an energy store, the method comprising:
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measuring at least one performance quantity;
supplying the at least one measured performance quantity to a state estimation routine for determining at least one state variable characterizing a current system state using a model based on at least one system-dependent model parameter and the at least one measured performance quantity; and
supplying the at least one measured performance quantity to a parameter estimation routine to determine the at least one system-dependent model parameter depending on a use to improve a state estimation;
wherein a selection of at least one of the at least one state variable characterizing the current system state and the at least one system-dependent model parameter determined by estimation depends on a dynamic response of the at least one measured performance quantity. - View Dependent Claims (2, 3, 4, 5, 6, 11)
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7. A device for state sensing of a technical system, the technical system being an energy store, the device comprising:
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a measuring arrangement to measure at least one performance quantity of the energy store;
a supplying arrangement to supply the at least one measured performance quantity to a state estimator to determine at least one state variable characterizing a current system state using a model based on at least one system-dependent model parameter and the at least one measured performance quantity;
a parameter estimator to determine the at least one system-dependent model parameter depending on a use to improve a state estimation, the at least one measured performance quantity being supplied to the parameter estimator;
a detecting arrangement to detect a dynamic response of the at least one measured performance quantity; and
a selection unit connected to the detecting arrangement to select at least one of ones of the at least one state variable and ones of the at least one system-dependent model parameter determined in at least one of the state estimator and the parameter estimator depending on the dynamic response. - View Dependent Claims (8, 12)
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9. A computer program for being executed on at least one of a computer, a state estimator and a parameter estimator, the computer program comprising:
program code operable to perform a process for state sensing of a technical system, the technical system being an energy store, the process including;
measuring at least one performance quantity;
supplying the at least one measured performance quantity to a state estimation routine for determining at least one state variable characterizing a current system state using a model based on at least one system-dependent model parameter and the at least one measured performance quantity; and
supplying the at least one measured performance quantity to a parameter estimation routine to determine the at least one system-dependent model parameter depending on a use to improve a state estimation;
wherein a selection of at least one of the at least one state variable characterizing the current system state and the at least one system-dependent model parameter determined by estimation depends on a dynamic response of the at least one measured performance quantity.
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10. A computer program product for being executed on at least one of a computer, a state estimator and a parameter estimator, the computer program comprising:
a computer-readable data carrier storing program code that is operable to perform a process for state sensing of a technical system, the technical system being an energy store, the process including;
measuring at least one performance quantity;
supplying the at least one measured performance quantity to a state estimation routine for determining at least one state variable characterizing a current system state using a model based on at least one system-dependent model parameter and the at least one measured performance quantity; and
supplying the at least one measured performance quantity to a parameter estimation routine to determine the at least one system-dependent model parameter depending on a use to improve a state estimation;
wherein a selection of at least one of the at least one state variable characterizing the current system state and the at least one system-dependent model parameter determined by estimation depends on a dynamic response of the at least one measured performance quantity.
Specification