摘要
动态特性是光纤陀螺的主要性能参数之一,改善动态特性有助于提高光纤陀螺的环境适应性。光纤陀螺的闭环检测带宽主要由检测电路的带宽限制。对于采用数字闭环方案的光纤陀螺,其带宽限制主要由闭环数字控制算法决定。通过理论分析及试验验证,表明在光纤陀螺闭环控制算法中引入PID控制算法,有效提高了闭环光纤陀螺检测带宽。由于角振动台测试方法的局限性,通过采用基于Faraday效应的带宽测试方法,给出了采用PID控制算法前后,光纤陀螺频率特性的实测曲线。
Dynamic performance is the primary parameter of fiber optic gyroscope （FOG）, the FOG＇s environmental adaptability could be improved by increasing the bandwidth. The bandwidth of closed-loop detection of FOG was limited by detection circuit. To the digital closed-loop FOG, its bandwidth was mainly limited by closed-loop arithmetic. The theory analysis and experiment showed that the bandwidth of closed-loop FOG was improved by inducing the PID control arithmetic to FOG＇s digital controller. The frequency response scale in the dynamic performance test of the fiber optical gyroscope＇s （FOG） is limited and the method to evaluate frequency characteristic of the FOG is used based on the magneto-optic Faraday effect. The bode figures of FOG＇s frequency performance were presented.
出处
《电子测量技术》
2012年第11期32-35,共4页
Electronic Measurement Technology
关键词
光纤陀螺
闭环控制
动态特性
PID控制
fiber optic gyros
closed loop
dynamic performance
PID control arithmetic
