Title :
Designand realization of a high-precision numericalcontrol current souse
Author :
Dongbo, Zhao ; Li Hui
Author_Institution :
Sch. of Electron. Inf., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
It is the design and application of digital controlled DC current source with an output range between 20 mA to 2000 mA, which was realized by making use of the single-chip microcomputer system, D/A and A/D converter, constant current source electric circuit, etc. In paper the frame drawing and main circuit were introduced. This design applied degenerative feedback closed loop control system, in order to advanced the output precision. Testing results show that this DC current source have credibility performance and high precision.
Keywords :
analogue-digital conversion; closed loop systems; constant current sources; digital-analogue conversion; direct digital control; electric current control; feedback; microprocessor chips; network synthesis; numerical control; A-D converter; D-A converter; constant current source; degenerative feedback closed loop control system; digital controlled DC current source; high precision numerical control; single-chip microcomputer system; Light emitting diodes; D/A converter; constant current source; digital controlled DC current source; single-chip microcomputer system;
Conference_Titel :
Circuits,Communications and System (PACCS), 2010 Second Pacific-Asia Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-7969-6
DOI :
10.1109/PACCS.2010.5626654
