Control parameters for searching

A computer implemented method for searching in a plurality of search cycles for control parameters that maximize output of an object for control, the object producing output in accordance with the control parameters, said method comprising:

• providing said control parameters at each search cycle in accordance with a predetermined algorithm;
• adding a periodic function of a predetermined period and a correction value obtained in a previous search cycle to the control parameters to obtain input parameters to said object;
• multiplying an output obtained from said object responsive to said input parameters by said periodic function and determining a correction value based on an integral value of the value obtained by the multiplication, the correction value correcting said control parameters such that the search converges;
• and
• repeating the search cycle in search for input parameters that maximizes the output of the object to extract the input parameters that maximize the output of said object.

A system having a processor and a memory for searching in a plurality of search cycles for control parameters that maximize output of an object for control, the object producing output in accordance with the control parameters, said system comprising:

• means for providing said control parameters at each search cycle in accordance with a predetermined algorithm;
• means for adding a periodic function of a predetermined period and a correction value obtained in a previous search cycle to the control parameters to obtain input parameters to said object;
• means for multiplying an output obtained from said object responsive to said input parameters by said periodic function and determining a correction value based on an integral value of the value obtained by the multiplication, the correction value correcting said control parameters such that the search converges;
• and
• means for repeating the search cycle in search for input parameters that maximizes the output of the object to extract the input parameters that maximize the output of said object.