A Steady-State Errors Correction Method for Eliminating Measurement Errors

This paper proposes a steady-state errors correction （SSEC） method for eliminating measurement errors.This method is based on the detections of error signal E（s） and output C（s） which generate an expected output R （s）.In comparison with the conventional solutions which are based on detecting the expected output R （s） and output C （s） to obtain error signal E （s）,the measurement errors are eliminated even the error might be at a significant level.Moreover,it is possible that the individual debugging by regulating the coefficient K for every member of the multiple objectives achieves the optimization of the open loop gain.Therefore,this simple method can be applied to the weak coupling and multiple objectives system,which is usually controlled by complex controller.The principle of eliminating measurement errors is derived analytically,and the advantages comparing with the conventional solutions are depicted.Based on the SSEC method analysis,an application of this method for an active power filter （APF） is investigated and the effectiveness and viability of the scheme are demonstrated through the simulation and experimental verifications.