传输线上分布电容对微动同步传感器输出的影响分析  

Analysis on Influence of Distributed Capacitance on Transmission Line to Microsyn Output

作　　者：黄业绪[1] 史忠科[1] 秦永元[1] 李雷 赵青 厉毓良 

机构地区：[1]西北工业大学自动化学院,西安710072 [2]陕西华燕航空仪表公司,陕西汉中723102

出　　处：《传感技术学报》2004年第4期560-564,共5页Chinese Journal of Sensors and Actuators

摘　　要：微动同步器在交流输出时 ,分布电容使输出梯度和相移改变 ;在交流信号被解调成直流输出时 ,分布电容易引起输出级自激。我们采用分析和对比试验 ,提出了在交流输出高、低端各接一级跟随器 ,来隔离分布电容对输出的影响 ;在直流输出高、低端各接一级消振网络 ,来消除分布电容引起的自激 ;并通过试验验证了措施的有效性。Distribution capacitance on transmission line often alters with scale factor and phase of microsyn AC output. When AC signal of microsyn output was demodulated to DC output, distribution capacitance may cause DC output self excitation. By contrast experiments to theoretical analysis, this paper provides a solution that is, a follower connect seperately at AC output high terminal and low terminal for isolating the influence of distribution capacitance. There are an elimination oscillation network at DC output high terminal and another at low terminal for elimination of the self excitation. By experiments, the validity of the proposed methods has been verified.

关 键 词：分布电容 影响 同步器输出 自激 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]