A Torque Magnetometer with Proportional-Integrating-Differentiating (PID) Compensation

Autor:	L. Lundgren, Björn Westerstrandh, Uno Gäfvert
Rok vydání:	1976
Předmět:	Physics Magnetometer PID controller Photodetector Proportional control Condensed Matter Physics Atomic and Molecular Physics and Optics law.invention Compensation (engineering) law Control theory Electromagnetic coil Magnet Torque Mathematical Physics
Zdroj:	Physica Scripta. 14:5-10
ISSN:	1402-4896 0031-8949
DOI:	10.1088/0031-8949/14/1-2/001
Popis:	A magnetometer for measuring torques in the range 10-10 Nm -5·10-4 Nm (10-3 dyncm -5·103 dyncm) is described. Torque compensation is achieved by feedback from a photodetector into a PID regulator system which generates a current through a compensation coil located in the field of permanent magnets. Stability criteria for the regulator system are discussed. The apparatus permits continuous measurement of the torque as a function of angle with simultanuous registration of the data on x-y-recorder and on paper tape for computer analysis. Measurements can be made in the temperature range 4.2 K to 400 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::437783a07a3426d12ca991533903482c https://doi.org/10.1088/0031-8949/14/1-2/001 Zobrazit plný text záznamu