Observer-corrector control system for systems with unmodeled dynamics
First Claim
1. A system for extracting a signal component that represents dominant dynamics in an output signal of a dynamic system comprising:
- a state observer adapted to track an actual signal component that represents dominant dynamics in the output signal of the dynamic system, and provide an estimation signal representing an estimated signal component that represents dominant dynamics in the output signal of the dynamic system; and
a corrector filter adapted to compensate for a mismatch between the estimation signal and the actual signal component that represents dominant dynamics in the output signal;
wherein a combination of the estimation signal with an output signal of the corrector filter can provide a synthesized signal including the signal component that represents dominant dynamics in the output signal.
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Abstract
A system for extracting a signal component from an output signal of a dynamic system. The system comprises a state observer and a corrector filter. The state observer is adapted to track a signal component that represents dominant dynamics in the output signal of the dynamic system and provide an estimation signal representing an estimated signal component in the output signal of the dynamic system. The corrector filter is adapted to compensate for a mismatch between the estimation signal and the actual signal component that represents the dominant dynamics in the output signal. A combination of the estimation signal with an output signal of the corrector filter can provide a synthesized signal including the signal component that represents the dominant dynamics in the output signal.
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Citations
20 Claims
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1. A system for extracting a signal component that represents dominant dynamics in an output signal of a dynamic system comprising:
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a state observer adapted to track an actual signal component that represents dominant dynamics in the output signal of the dynamic system, and provide an estimation signal representing an estimated signal component that represents dominant dynamics in the output signal of the dynamic system; and
a corrector filter adapted to compensate for a mismatch between the estimation signal and the actual signal component that represents dominant dynamics in the output signal;
wherein a combination of the estimation signal with an output signal of the corrector filter can provide a synthesized signal including the signal component that represents dominant dynamics in the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of extracting a signal component from an output signal of a dynamic system comprising the steps of:
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estimating a signal component that represents dominant dynamics in the dynamic system output signal;
compensating for a mismatch between the estimated signal component and an actual signal component that represents dominant dynamics in the dynamic system output signal;
combining the estimated signal component with a signal representing the compensation for a mismatch between the estimated signal component and the actual signal component to provide a synthesized signal including the signal component that represents dominant dynamics in the output signal. - View Dependent Claims (14, 15, 16, 17)
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18. A method of reducing effects of higher order dynamics in a controlled system comprising the steps of:
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tracking an actual signal component that represents dominant dynamics in an output signal of the controlled system;
providing an estimation signal representing an estimated component that represents dominant dynamics in the output signal of the controlled system;
compensating for a mismatch between the estimation signal and the actual signal component that represents dominant dynamics;
combining the estimation signal with an output signal from the corrector filter to form a synthesized feedback signal, the synthesized feedback signal including a signal component that represents dominant dynamics in the output signal of the controlled system; and
inputting the synthesized feedback signal to a controller for the controlled system, wherein a destabilizing effect of unmodeled higher order dynamic signal components in the dynamic system output signal is reduced or substantially eliminated. - View Dependent Claims (19, 20)
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Specification