Digital signal processing for an adaptive phase-locked loop controller

被引：13

作者：

Twiefel, Jens ^{[1
]}

Klubal, Martin ^{[2
]}

Paiz, Carlos ^{[2
]}

Mojrzisch, Sebastian ^{[2
]}

Krueger, Holger ^{[2
]}

机构：

[1] Inst Dynam & Vibrat Res, Appelstr 11, Hannover, Germany

[2] Heinz Nixdorf Inst, Paderborn, Germany

来源：

MODELING, SIGNAL PROCESSING, AND CONTROL FOR SMART STRUCTURES 2008 | 2008年 / 6926卷

关键词：

resonance control; phase detection; FPGA-based-system; APLL;

D O I：

10.1117/12.776091

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页数：12