The factors of MOS transistor in the saturation region are analyzed, the mismatch models are optimized, and the model parameter extraction is done by least squares curve fitting method.

A type mismatch error will result if the dimensionality of a variable or parameter does not match the dimensionality (or type) of the array assigned to the variable or passed to the parameter.

This algorithm can effectively overcome the model mismatch, unknown disturbance and parameter variation.