Design of hybrid H2/H∞ robust controller for magnetically levitated linear synchronous motor of CNC machine tools
For the control system of magnetic levitation linear synchronous motor of computer numerical control(CNC)machine tools,hybrid H2/H∞ robust control is proposed.Firstly,the mathematical model of magnetic levitation linear synchronous motor of CNC machine tools is established by considering the uncertain perturbation,and the end effect.Secondly,the H∞ robust control is combined with the LMI to design an H∞ robust controller based on the LMI.Thirdly,in order to improve the dynamic performance of the system,a hybrid H2/H∞ robust controller based on LMI is designed.Finally,the simulation results prove that the hybrid H2/H∞ robust control can effectively improve the convergence speed and response sensitivity of the system under the premise of ensuring the system robust stability.
magnetic levitation linear synchronous motor of CNC machine toolsH∞ robust controlhybrid H2/H∞ robust controlLMI
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