Control device and method for controlling a control element
AssigneeHarold Beck and Sons, Inc.
InventorBrian D. Paris
Life of this patent
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Abstract
A control device and method is provided for controlling a control element by receiving a controller demand signal and a control element sensor signal, and processing the signals to determine if there is a change in the controller demand signal and/or a change in the control element sensor signal. A first dead band range and/or a second dead band range are determined based on the change in the controller demand signal and/or based on the change in the control element sensor signal. An error signal is calculated from the controller demand signal and the control element sensor signal, and a control signal for controlling the control element is generated based on the determination of the dead band ranges and whether the calculated error signal is outside of the first and/or second dead band ranges.
Claims26
A method for controlling a control element comprising:
- (a) receiving a controller demand signal and a control element sensor signal;
- (b) processing the controller demand signal and the control element sensor signal to determine change in the controller demand signal and/or change in the control element sensor signal;
- (c) determining a first dead band range and/or a second dead band range based on the change in the controller demand signal and/or based on the change in the control element sensor signal;
- (d) calculating an error signal from the controller demand signal and the control element sensor signal;
- (e) determining if the error signal is outside of the first dead band range and/or the second dead band range if the controller demand signal is changing, and/or determining if the error signal is outside of the second dead band range if the controller demand signal is not changing;
- and
- (f) generating a control signal for controlling the control element based on the determinations of steps (c) and (e).
A control device for controlling a control element comprising:
- a processor for receiving a controller demand signal and a control element sensor signal, and for generating a control signal for controlling the control element;
- wherein the processor receives the controller demand signal and the control element sensor signal, processes the controller demand signal and the control element sensor signal to determine variation of the controller demand signal and/or variation of the control element sensor signal, determines a first dead band range and/or a second dead band range based on the variation of the controller demand and/or variation of the control element sensor signal, calculates an error signal from the controller demand signal and the control element sensor signal, determines if the error signal is outside the first and/or second dead band ranges, and generates the control signal for controlling the control element.
A control device for controlling a control element comprising:
- (a) means for receiving a controller demand signal and a control element sensor signal;
- (b) means for processing the controller demand signal and the control element sensor signal to determine change in the controller demand signal and/or change in the control element sensor signal;
- (c) means for determining a first dead band range and/or a second dead band range based on the change in the controller demand signal and/or based on the change in the control element sensor signal;
- (d) means for calculating an error signal from the controller demand signal and the control element sensor signal;
- (e) means for determining if the error signal is outside of the first dead band range and/or the second dead band range if the controller demand signal is changing, and/or determining if the error signal is outside of the second dead band range if the controller demand signal is not changing;
- and
- (f) means for generating a control signal for controlling the control element based on the determination of the first and second dead band ranges and if the error signal is outside the first and/or second dead band ranges.
Dependencies are inferred from the claim text.