Patent ID: 8169211

Claim:
A method for verifying the bandwidth and phase of a digital power control system, comprising steps of: A. Disturbance Order Reading in which an analog command signal is supplied and interfused into a digital system unit, a comparison signal is generated and, after the analog command signal is compared with the comparison signal, a time delay parameter is obtained; B. Phase Delay Compensation in which a phase lead compensator is designed that is based on the different sampling frequencies and time delay parameters of the digital system unit, and the phase lead compensator is added to the digital system unit so as to compensate the phase delay caused due to the digital system unit; and C. System Measuring in which a mixed wave calculation unit and a supply unit are added to the digital system unit to make the analog command signal pass through the digital system unit and the mixed wave calculation unit to the supply unit and to further drive a power circuit, and the power circuit feedbacks a signal to the phase lead compensator through the digital system unit and the mixed wave calculation unit to compensate, and then generates an analog output signal so that the analog command signal and the analog output signal may be used for verifying the system bandwidth and phase.