A HIGH OPEN-LOOP GAIN CONTROLLER

被引：11

作者：

SEPPA, H ^{[1
]}

SIPOLA, H ^{[1
]}

机构：

[1] HELSINKI UNIV TECHNOL,SF-02150 ESPOO,FINLAND

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1990年 / 61卷 / 09期

关键词：

D O I：

10.1063/1.1141337

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new controller, especially suited for phase-locked loops, is discussed. The controller, composed of RC-circuit electronics, has a gain with a slope of -30 dB/decade over a wide bandwidth. It is shown that in certain systems the present controller (PI3/2 controller) provides a much higher feedback gain than an ordinary proportional-integrator controller (PI controller). As applications, the superconducting quantum interference device (SQUID) and an electrically adjustable point contact used in surface microscopy or spectroscopy are discussed in some detail. The operation of the controller in a piezo-driven point contact was studied experimentally.

引用

页码：2449 / 2451

页数：3

共 12 条

[1]

CARLSON GE, 1964, IEEE T CIRCUITS SYST, VCT11, P210

[2] CONTROL-SYSTEMS FOR SCANNING TUNNELING MICROSCOPES WITH TUBE SCANNERS [J].