Optimal input signals for bandlimited scanning systems ⋆
نویسندگان
چکیده
Periodic scanning trajectories are designed with minimal harmonic content and fixed linear regions. While minimum harmonic content reduces vibration in mechanical scanners, fixed linear regions eliminate curvature in the scan area. Simulated and experimental results demonstrate less induced vibration than presently used techniques.
منابع مشابه
Reconstruction and processing of bandlimited signals based on their discrete values
i Zusammenfassung Diese Arbeit befasst sich mit dem Wechselspiel zwischen analoger und diskreter Welt. Die Umwandlung von zeitdiskreten in zeitkontinuierliche Signale ist essenziell, da Informationen heutzutage fast ausschließlich digital verarbeitet werden, während reale Signale analog sind. Neben der bandbegrenzten Interpolation wird die Rekonstruktion von bandbegrenzen Signalen anhand ihrer ...
متن کاملMultichannel Interpolation for Periodic Signals via FFT, Error Analysis and Image Scaling
This paper describes a new method for the multichannel interpolation of a discrete signal. It is shown that a bandlimited periodic signal f can be exactly reconstructed from finite samples of gk (1 ≤ k ≤ M) which are the responses of M linear systems with input f . The proposed interpolation can also be applied to approximate non-bandlimited periodic signals. Quantitative error analysis is prov...
متن کاملRethinking Sketching as Sampling: A Graph Signal Processing Approach
Sampling of bandlimited graph signals has welldocumented merits for dimensionality reduction, affordable storage, and online processing of streaming network data. Most existing sampling methods are designed to minimize the error incurred when reconstructing the original signal from its samples. Oftentimes these parsimonious signals serve as inputs to computationally-intensive linear operator (e...
متن کاملReconstruction of Nonuniformly Sampled Bandlimited Signals Using Digital Fractional Delay Filters
This paper considers the problem of reconstructing nonuniformly sampled bandlimited signals using a synthesis system composed of digital fractional delay filters. The overall system can be viewed as a generalization of time-interleaved ADC systems. By generalizing these systems, it is possible to eliminate the errors that are introduced in practice due to time-skew errors.
متن کاملPotentials of Evolving Linear Models in Tracking Control Design for Nonlinear Variable Structure Systems
Evolving models have found applications in many real world systems. In this paper, potentials of the Evolving Linear Models (ELMs) in tracking control design for nonlinear variable structure systems are introduced. At first, an ELM is introduced as a dynamic single input, single output (SISO) linear model whose parameters as well as dynamic orders of input and output signals can change through ...
متن کامل