Abstract: To improve the steady operation capability of shipboard turbo-generator，the excitation-valve-boiler integrated control model considering uncertain disturbances was built，and proper output functions were chosen. A corresponding linear system including actual measurable quantities was constructed，an interference-resistant control strategy in the sense of L2-gain of the original system was proposed，and a nonlinear integrated robust controller based on SDM （State Dynamic Measurement）-H∞ method was designed．The simulation results of a multi-machine parallel isolated network show that，by applying the controller，fluctuations of unit’s rotation speed，excitation terminal voltage and pressure of steam supply due to load change and variation of system state variables were suppressed，and the recovery time was reduced，which may enhance stability of shipboard power system．The conclusion of this paper can provide reference for the study of nonlinear control of independent power grid，and the modeling by applying SDM method can also be used for the simplification of complex systems.