摘要
电阻层析成像(ERT)系统的激励源大都采用基于双运算放大器结构的电压控制电流源(VCCS),这种VCCS结构简单,电流稳定性强,但是带负载能力偏低往往成为其应用的瓶颈。通过增加反馈电路的方法,提高了这种传统结构VCCS的带负载能力,拓宽了其应用范围。
Most of the excitation source in Electrical Resistance Tomography（ERT） system is based on dual-amplifier structure voltage controlled current source（VCCS）,this kind of VCCS is of simple structure and strong current stability,but lower load capacity becomes a bottlenecks in its application.Through the methods of increasing the feedback circuit,the load capacity of this VCCS with traditional structure is improved and its scope of application is also broaden.
出处
《自动化技术与应用》
2010年第11期88-91,共4页
Techniques of Automation and Applications
关键词
ERT
恒流源
带负载能力
ERT
constant current source
load capacity
