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
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Iterative Learning Identification and Compensation of Space-Periodic Disturbance in PMLSM Systems With Time Delay
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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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Journal ArticleDOI
Simultaneous Optimization of Damping and Tracking Controller Parameters Via Selective Pole Placement for Enhanced Positioning Bandwidth of Nanopositioners
TL;DR: In this article, positive velocity and position feedback (PVPF) is used to achieve full damping of the first resonant mode whilst also achieving bandwidth greater than the natural frequency of the plant.
Proceedings ArticleDOI
An Integrated Parallel Micromanipulator with Flexure Hinges for Optical Fiber Alignment
TL;DR: In this paper, a six degree-of-freedom (DOF) parallel micromanipulator with flexure hinges driven by piezoelectric actuators is presented for optical fiber alignment.
Proceedings ArticleDOI
Simultaneous optimization of damping and tracking controller parameters via selective pole placement for enhanced positioning bandwidth of nanopositioners
TL;DR: Simulations show full damping of the first resonant mode whilst also achieving bandwidth greater than the natural frequency of the plant, allowing for high speed scanning with accurate tracking.
Proceedings ArticleDOI
Techniques and considerations for driving piezoelectric actuators at high speed
TL;DR: In this article, the authors identify the limiting characteristics of piezoelectric drives, including signal-bandwidth, output-impedance, and power dissipation, and introduce a dual-amplifier that exhibits a bandwidth of 2 MHz with a 100 nF capacitive load.