FPGA-based Low-Latency Digital Servo for Optical Physics Experiments

Pomponio, Marco; Hati, Archita; Nelson, Craig W.

doi:10.1109/ifcs-isaf41089.2020.9234889

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Due to technological advancements, digital servomotors have replaced analog ones due to their increased response speed to the control signal. Consequently, these servomotors have increased positioning accuracy and the ability to maintain a constant torque [43][44][45][46]. For example, in Figure 2, a servomotor used in a Hirata Cartesian robot (Hirata Corporation, Kumamoto, Japan) is depicted.…”

Section: Servomotor Typesmentioning

confidence: 99%

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Autsou,

Kudelina,

Vaimann

et al. 2024

Applied Sciences

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Servomotors have found widespread application in many areas, such as manufacturing, robotics, automation, and others. Thus, the control of servomotors is divided into various principles and methods, leading to a high diversity of control systems. This article provides an overview of types of servomotors and their basic principles and control methods. Principles such as digital signal processing, feedback control principle, field-oriented control, and integration with Industry 4.0 are discussed. Based on these control principles, the article presents popular control methods: PWM control, current control, two-loop control, fuzzy-logic control, and programmable control. The article concludes with a comparison of the presented methods on several criteria, and as an example, it includes the results of modeling a servomotor using the fuzzy-logic control method.

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Section: Servomotor Typesmentioning

confidence: 99%

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Autsou,

Kudelina,

Vaimann

et al. 2024

Applied Sciences

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“…Referencing of the optical beat signal to a H‐maser reference and filtering of the subsequent error signals is achieved using a PID algorithm in a field programmable gate array (FPGA). [ 55 ] Because the algorithm is implemented digitally, we are able to control and optimize the proportional (P), integral (I), and differential (D) gains and corner frequencies via a computer interface. The design of high bandwidth feedback actuators helps to suppress high‐frequency comb noise and support higher performance frequency synthesis.…”

Section: Er/yb:glass Ofc Description and Characterizationmentioning

confidence: 99%

Optical and Microwave Metrology at the 10⁻¹⁸ Level with an Er/Yb:glass Frequency Comb

Nardelli

Leopardi

Schibli

et al. 2023

Laser & Photonics Reviews

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Optical frequency combs are essential tools for precision metrology experiments ranging in application from remote spectroscopic sensing of trace gases to the characterization and comparison of optical atomic clocks for precision time‐keeping and searches for physics beyond the standard model. Presented here is a description of the architecture and a full characterization of a telecom‐band, self‐modelocking frequency comb based on a free‐space laser with an Er/Yb co‐doped glass gain medium. The laser provides a robust and cost‐effective alternative to Er:fibre laser based frequency combs, while offering stability and noise performance similar to Ti:sapphire laser systems. Finally, the utility of the Er/Yb:glass frequency comb is demonstrated in high‐stability frequency synthesis using two ultra‐stable optical references at 1157 nm and 1070 nm and in low‐noise photonic microwave generation by dividing these references to the microwave domain.

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Linien: A versatile, user-friendly, open-source FPGA-based tool for frequency stabilization and spectroscopy parameter optimization

Wiegand

Leykauf

Jördens³

et al. 2022

Review of Scientific Instruments

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We present a user-friendly and versatile tool for laser frequency stabilization. Its main focus is spectroscopy locking, but the software is suitable for lock-in techniques in general as well as bare proportional–integral–derivative (PID) operation. Besides allowing for sinusoidal modulation (up to 50 MHz), triangular ramp scanning, in-phase and quadrature demodulation (1–5 f), infinite impulse response, and PID filtering, Linien features two different algorithms for automatic lock point selection; one of them performs time-critical tasks completely on field-programmable gate arrays. Linien is capable of autonomously optimizing spectroscopy parameters by means of machine learning and can measure the error signal’s power spectral density. The software is built in a modular way, providing both a graphical user interface as well as a Python scripting interface. It is based on the RedPitaya STEMLab platform but may be ported to different systems.

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FPGA-based Low-Latency Digital Servo for Optical Physics Experiments

Cited by 3 publications

References 12 publications

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Optical and Microwave Metrology at the 10⁻¹⁸ Level with an Er/Yb:glass Frequency Comb

Linien: A versatile, user-friendly, open-source FPGA-based tool for frequency stabilization and spectroscopy parameter optimization

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FPGA-based Low-Latency Digital Servo for Optical Physics Experiments

Cited by 3 publications

References 12 publications

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Optical and Microwave Metrology at the 10−18 Level with an Er/Yb:glass Frequency Comb

Linien: A versatile, user-friendly, open-source FPGA-based tool for frequency stabilization and spectroscopy parameter optimization

Contact Info

Product

Resources

About

Optical and Microwave Metrology at the 10⁻¹⁸ Level with an Er/Yb:glass Frequency Comb