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摘要: The article describes a hysteresis compensation method developed to meet stringent specifications imposed by the precision positioning of optical elements in microlithography tools. Novel and effective implementation techniques are introduced for systems possessing hysteretic behavior. real-time algorithm was simplified fixing order curve fit nonlinear component actuator response, limiting number operators used estimate loop, varying only slope /spl alpha/. Using LabView, controller capable accurately up 36 actuators within fraction second is developed.