Title :
A study on current stabilization technology of transmitter for controlled-source frequency electromagnetic sounding
Author :
Lixuan, Liu ; Zhishan, Liang ; Huaqing, Liang ; Hongdong, Yin ; Yin, Liu
Author_Institution :
Coll. of Geophys. & Inf. Eng., China Univ. of Pet., Beijing, China
Abstract :
A controlled-source frequency electromagnetic sounding system needs high-power low-frequency pulse current supplied by the transmitter. And the pulse current is required to possess high current stability. The article proposes a high precision mixed-signal (analog and digital) plan for current stabilization, and illustrates the principle and design method of the plan. A sampler of transmitter is developed with the current stabilization plan, for which many logging tests have been made in Daqing Oilfield, and the testing result demonstrates that the stability of output current of the transmitter has reached 0.3%.
Keywords :
closed loop systems; constant current sources; electric current control; mixed analogue-digital integrated circuits; transmitters; controlled-source frequency electromagnetic sounding; current stabilization technology; high current stability; high precision mixed-signal plan; high-power low-frequency pulse current; Circuit stability; Current measurement; DC-DC power converters; Educational institutions; Pulse width modulation; Thermal stability; Transmitters; Controlled-source frequency electromagnetic sounding; Current stability; Mixed-signal current stabilization control; Transmitter;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6038015
