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Multi-objective mixed l1/H∞controller for direct drive ring permanent magnet torque motor
Author(s): 
Pages: 603-607,614
Year: Issue:  4
Journal: Electric Machines and Control

Keyword:  permanent magnet synchronous motorsring permanent magnet torque motorsdirect drivemulti-objective controlmixed l1/H∞control;
Abstract: NC rotary table servo system, which is directly drived by permanent-magnet ring torque motor, is more sensitive to disturbances torque and parameters uncertainties, which greatly reduces servo performances of the system. A multi-objective mixed l1/H∞controller was designed to solve the contradiction between rapidity and robustness. Since the solutions to the advanced l1/H∞,δ control and the mixed l1/H∞control were consistent, the rational suboptimal solution to the mixed l1/H∞controller was obtained via truncation method. Simulation results and analyses show that the proposed mixed l1/H∞controller can meet the requirement of the robustness and rapidity for ring permanent magnet torque motor servo system used in direct drive NC rotary table.
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