摘要
基于叶尖定时测振原理,设计了用于叶尖定时测量的双屏蔽电容式脉冲传感器,并结合预处理电路建立了传感器的控制论模型,对电路系统的带宽计算做了优化.理论计算与仿真表明,该脉冲传感器带宽大、响应快;同时实验结果也表明,传感器具有很高的信噪比和很强的抗干扰能力,能够满足高精度叶尖定时传感器的要求.
Based on vibration measuring principle of blade tip-timing, double-shielded capacitive pulse sensor is designed to measure blade tip-timing. Combined with the pre-processed circuit, cybernetics model of the sensor is setup and calculation of the circuit system bandwidth is optimized. As theoretical calculation and simulation shows, the sensor is featured with large bandwidth and rapid response. Also, according to the experimental results, signals from the sensor that can be used as high precision blade tip-timing sensor have high SNR and strong anti-interference capability.
出处
《传感技术学报》
CAS
CSCD
北大核心
2007年第10期2199-2202,共4页
Chinese Journal of Sensors and Actuators
基金
国家自然基金资助(50375110)
教育部新世纪优秀人才支持计划资助(NECT)
关键词
BTT
叶片振动
电容传感器
双屏蔽
控制论模型
BTT
blade vibration
capacitive sensor
double-shielded
cybernetics model