Self-optimization of a control system by means of a logic circuit

The self-optimization of a control system has been tried by means of a logic circuit. The device makes successive trials by giving values of a parameter to the system and, on the basis of the resulting successive observations of the mean-square error, finally finds the value of the parameter giving the minimum error. The device is also able to follow the change of the system conditions to keep the system optimum. The optimum value of damping ratio of a second-order system with LF Gaussian noise input is also discussed on the basis of the data obtained with the device.