Everyone is familiar with feedback circuits for control. PID is an example of a feedback circuit. It is mainly control theory specialists who are acquainted with the notion that feedback combined with feedforward makes for superior control.
Feedback control simply uses the error signal from the controlled variables to create a command for the actuator. A feedforward circuit measures the disturbance to the system to guess at the command for the actuator. By combining the feedback error signal with the feedforward guess, far superior control can be achieved. In the instance of a LENR system, the disturbance could be radioactive signal from the energy generating mechanism. By using that "disturbance" the actuator (e.g. the external heater) can be commanded BEFORE the temperature is even conducted to the temperature measuring device.
Much literature is available on combined feedforward / feedback control. Here is a starter link: https://en.wikipedia.org/wiki/Feed_forward_(control)
I invite comment from control theory specialists for the special case of LENR.