Permanent magnet synchronous motors (PMSMs) have been widely applied in the shipborne rocket launcher systems due to their\nhigh torque density and high efficiency. However, since there are many external disturbances from the shipborne rocket launcher,\nthe tracking performance under random noises needs to be improved. In this paper, an improved finite control set optimal control\n(IFCSOC) based on a super-twisting extended state observer (SESO) is investigated for position tracking control of PMSMs. The\nSESO can improve the anti-interference ability of the proposed controller. Moreover, in order to improve tracking accuracy,\nTaylorâ??s formula is used to solve the phase-lag problem of nonlinear tracking differentiator in IFCSOC. Simulation shows that\ncompared with conventional FCSOC, IFCSOC exhibits better robustness under random disturbances. Furthermore, the semiphysical\nexperiment is conducted to verify the proposed IFCSOC strategy.
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