Patent ID: 7839906

Claim:
A control system, comprising: a control component configured to generate a control signal; a plant configured to generate an output responsive to the control signal; and a dual feedback control loop coupled between the output of the plant and the control component, the dual feedback control loop comprising a combination of (i) a running optimal power control (ROPC) loop and (ii) an automatic power control (APC) loop, wherein the ROPC loop and the APC loop run concurrently to generate respective feedback control signals that are input to the control component for generation of a combined control signal adjustment, the combined control signal adjustment being used at least in part to generate the control signal, wherein potential contention between the ROPC loop and the APC loop is reduced by configuring the ROPC loop to have a frequency response that extends to DC, and configuring the ROPC loop to inform the APC loop about contribution of the ROPC loop to the combined control signal adjustment so that the APC loop does not respond to the contribution of the ROPC loop.