A Modified Positive Velocity and Position Feedback scheme with delay compensation for improved nanopositioning performance
TLDR
In this article, a controller design to compensate the effects of time delay in a flexure-based piezoelectric stack driven nanopositioner is presented. And a theoretical model which takes into account the dependence between the sampling time and the delay introduced is proposed.Abstract:
This paper presents a controller design to compensate the effects of time delay in a flexure-based piezoelectric stack driven nanopositioner. The effects of the time delay in flexure nanopositioners is illustrated and identified by means of experimentally obtaining the frequency response of the system. Moreover, a theoretical model which takes into account the dependence between the sampling time and the delay introduced is proposed. The proposed control design methodology not only accommodates for time delay but also ensures the robust stability and allows its application to systems with a larger delay than other schemes proposed previously. Limitations and future work are discussed.read more
Citations
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A Two Degrees of Freedom Resonant Control Scheme for Voltage-Sag Compensation in Dynamic Voltage Restorers
TL;DR: In this paper, a two-degree-of-freedom (2DOF) control scheme for voltage compensation in a dynamic voltage restorer (DVR) power circuit is presented.
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Iterative Learning Identification and Compensation of Space-Periodic Disturbance in PMLSM Systems With Time Delay
TL;DR: A novel iterative learning identification method that utilizes the partial but most pertinent information in the error signal is proposed to identify the force ripple in permanent-magnet linear synchronous motor (PMLSM) systems.
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Positive acceleration, velocity and position feedback based damping control approach for piezo-actuated nanopositioning stages
TL;DR: In this paper, the authors proposed a damping control approach with positive acceleration, velocity and position feedback (PAVPF) scheme for piezo-actuated nanopositioning stages to implement high-bandwidth operation.
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Mimicking the cochlear amplifier in a cantilever beam using nonlinear velocity feedback control
Bryan S. Joyce,Pablo A. Tarazaga +1 more
TL;DR: In this paper, a nonlinear, velocity-based feedback control law is applied to a cantilever beam with piezoelectric actuators to mimic the cochlea?s nonlinear amplification in a mechanical system.
References
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High bandwidth nano-positioner: A robust control approach
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Resonant controllers for smart structures
TL;DR: In this article, a special type of colocated feedback controller for smart structures is proposed, which is a parallel combination of high-Q resonant circuits tuned to a pole (or the resonant frequency) of the smart structure.
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Motion Control of Piezoelectric Positioning Stages: Modeling, Controller Design, and Experimental Evaluation
TL;DR: In this paper, a general skeleton on modeling, controller design, and applications of the piezoelectric positioning stages is presented, and a robust adaptive controller is developed based on a reduced dynamic model under both unknown hysteresis nonlinearities and parameter uncertainties.