Digital signal processing for an adaptive phase-locked loop controller

Jens Twiefel; Martin Klubal; Carlos Paiz; Sebastian Mojrzisch; Holger Krüger

doi:10.1117/12.776091

3 April 2008 Digital signal processing for an adaptive phase-locked loop controller

Jens Twiefel, Martin Klubal, Carlos Paiz, Sebastian Mojrzisch, Holger Krüger

Proceedings Volume 6926, Modeling, Signal Processing, and Control for Smart Structures 2008; 69260A (2008) https://doi.org/10.1117/12.776091
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Many piezoelectric systems are operated in resonance, requiring some sort of control. Especially weakly damped systems need a control algorithm to hold the system in resonance. There are many factors, which can change the system's resonant frequency during operation. The two most important factors are load effects and temperature effects. A common algorithm to drive a piezoelectric system in its eigenfrequency is the PLL (phase-locked-loop) controller - well known from communication technologies - including some adaptive variantions of the PLL. Beside a brief introduction into the APLL (adaptive PLL, this paper concentrates on one of the main components of the (A)PLL, the phase detector. It investigates and compares different types of phase detectors with a focus on the implantation on a digital control system.

Citation Download Citation

Jens Twiefel, Martin Klubal, Carlos Paiz, Sebastian Mojrzisch, and Holger Krüger "Digital signal processing for an adaptive phase-locked loop controller", Proc. SPIE 6926, Modeling, Signal Processing, and Control for Smart Structures 2008, 69260A (3 April 2008); https://doi.org/10.1117/12.776091

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