The Method of PID Parameter Optimization Based on Modified Linear Quadratic Optimal Control in the Linear DC Motor

The LBDCM is greatly affected by the uncertainties of the plant Large uncertainties may be imposed on the system and input parameters, so that the performance deviates far from the nominal design. In order to improve the performance of LBDCM, the paper presents a method of RID parameter optimization based on modified linear quadratic (LQ) optimal control. Time domain analysis and frequency domain analysis are the basic approaches in designing control system and they have close relationship to each. The simulation results verified the validity of the scheme.