Adaptive control unit with feedback compensation
AssigneeUltra Electronics Limited
InventorsIan Stothers, Ivan Scott
Life of this patent
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Abstract
An adaptive control unit is described for receiving an analog input signal containing at least an indication of a parameter to be controlled to generate an analog output signal for control of the parameter. The analog input signal contains a fed back component resulting from the analog output signal. The adaptive control unit comprises an analog filter having an adjustable gain, a gain adjuster for adjusting the gain of the analog filter using a feedforward adjustment method, and a filter for compensating for the fed back component in the analog input signal.
Claims68
An adaptive control unit for receiving an analog input signal containing at least an indication of a parameter in a plant to be controlled to generate an analog output signal for control of the parameter, wherein said analog input signal contains a fed back component resulting from said analog output signal, the adaptive control unit comprising:
- an analog filter having an adjustable gain;
- gain adjusting means for adjusting the gain of said analog filter;
- and
- filtering means connected to an input of said analog filter and configured to compensate for said fed back component in said analog input signal;
- wherein said gain adjustment means is adapted to determine a gain adjustment using a digital feed forward adjustment method, said digital feed forward adjustment method including the step of digitally processing the input signal using a model of the plant;
- wherein said filtering means is configured to filter using a model of at least a phase response of a feedback path of said analog output signal to said analog input signal.
An adaptive control unit for receiving an analog input signal containing at least an indication of a parameter in a plant to be controlled to generate an analog output signal for control of the parameter, wherein said analog input signal contains a fed back component resulting from said analog output signal, the adaptive control unit comprising:
- an analog input for receiving said analog input signal and an analog output for outputting said analog output signal;
- an analog filter having an adjustable gain and connected between said analog input and said analog output;
- a gain control unit connected to said analog filter for controlling the gain of said analog filter using a digital feed forward adjustment method, said digital feed forward adjustment method including the step of digitally processing the analog input signal using a model of the plant;
- and
- a feedback filter connected to the input of said analog filter and configured to compensate for said fed back component in said analog input signal;
- wherein said feedback filter is configured to filter using a model of at least a phase response of a feedback path of said analog output signal to said analog input signal.
Dependencies are inferred from the claim text.