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- W2371914797 abstract "A nonlinear macro and micro control method for high dynamic precision servo dual-stage actuator(DSA) system was presented.An nm-level positioning precision is required by using macro movement of long stroke linear motor and high-precision micro movement of voice coil motor,and the introduction of extended state observer.When the position error of the system is large,the primary actuator controller is used to yield a closed-loop system with a small damping ratio for a fast rise time and certain allowable overshoot by the frame work of proximate time optimal control(PTOC).Then,a composite nonlinear feedback(CNF) control law was designed for the secondary actuator to reduce the overshoot caused by the primary actuator as the system output approaches the setpoint,and ultimately achieve the purpose of fast and high-precision positioning for the system.The extended state observer(ESO) was designed to estimate the unknown velocity and compensate the disturbance in servo systems,thus effectively removed the static error.The proposed control method was applied to an actual DSA positioning system.The experimental results demonstrate that our approach can improve the dynamic performance and the anti-jamming capability of the system,and enhance the control precision." @default.
- W2371914797 created "2016-06-24" @default.
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- W2371914797 date "2013-01-01" @default.
- W2371914797 modified "2023-09-28" @default.
- W2371914797 title "Dual-stage actuator control system design for precision motion platform" @default.
- W2371914797 hasPublicationYear "2013" @default.
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