Abstract: To reject the disturbance from oscillating ship deck in a shipborne rocket launcher control sys- tem, a mathematical model of the integrated system based on permanent magnet synchronous motor (PMSM) was established, and the internal model-based output regulation problem (ORP) was studied. The deck motion was modeled as the superposition of a fixed number of sinusoidal functions of time, and of unknown frequency, amplitude and phase. An adaptive scheme based on the tracking error and the states of the internal model controller was designed, which is robust with respect to uncertainties on the mechanical parameters that characterize the model and the exosystem. Simulation results demonstrate that the proposed control strategy performs well in solving ORP of rejecting the disturbance coupling from rock- et fixed deck, and the tracking error is exponentially asymptotically stable at the origin.

Key words: ordnance science and technology, shipborne rocket launcher, output regulation, adaptive scheme, internal model principle, uncertainty