Self-optimizing detergent controller for controlling variable additive concentration level in a warewashing machine

A method for controlling at least one variable additive concentration level in a warewashing machine, comprising the steps of:

• providing a clock signal;
• inputting at least one system parameter;
• determining at least one set-point value based on said clock signal and said system parameters;
• generating a control signal to control said additive concentration level in response to at least one determined set-point value;
• and
• regulating said additive concentration level based on said control signal by controlling an amount of additive injected into said warewashing machine.

An apparatus for controlling at least one variable additive concentration level in a machine, comprising:

• a clock for providing a timing signal;
• input means for entering at least one system parameter;
• processing means, coupled to said timer means and said input means, for determining at least one set-point value based on said system parameters and for generating a control signal to control said additive concentration level in response thereto;
• and
• regulating means, coupled to said processing means, for regulating said additive concentration level based on said control signal from said processing means.