Extremum-seeking control system for a plant

An extremum-seeking controller for a plant comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• perturbing a manipulated variable with an excitation signal and providing the perturbed manipulated variable as an input to a plant;
• monitoring a performance variable of the plant resulting from the perturbed manipulated variable;
• estimating a normalized correlation coefficient relating the performance variable to the manipulated variable;
• and
• modulating the manipulated variable to drive the normalized correlation coefficient toward zero using a general set of tuning parameters, wherein the general set of tuning parameters are adapted for use with the normalized correlation coefficient, independent of a scale of the performance variable.

An extremum-seeking controller for a plant, the extremum-seeking controller comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• perturbing each of a plurality of manipulated variables with a different excitation signal;
• monitoring a performance variable of the plant resulting from each of the perturbed manipulated variables;
• estimating normalized correlation coefficients relating the performance variable to each of the perturbed manipulated variables;
• and
• modulating the manipulated variables to drive the estimated normalized correlation coefficients toward zero using a general set of tuning parameters, wherein the general set of tuning parameters are adapted for use with the normalized correlation coefficient, independent of a scale of the performance variable.