Frequency Control Method Of Laser Gyroscope With Wavelet Filter And Automatic Gain

Recent decades laser gyros is a kind of rising Angle sensitive components, it is the modern aviation,maritime, aerospace and defence industry widely used an inertial navigation instruments, itsdevelopment of a country’s industrial, defense and other high-tech development has a very importantstrategic significance. Therefore, to have already been put into practical one type of laser gyroscope,improve its stability, reliability and precision is of great significance.This paper based on previous studies, in laser gyro real-time filter, the steady output signal lightamplification frequency control mode for future research, pretreatment of the laser gyroscope improvingprecision, long-term reliability, robustness, such as design work to have the certain reference value.According to the domestic and foreign literature studies, found that of the output signal of the lasergyros because there are random noise interference, greatly affects the precision of laser gyro output, sosignal processing, can improve precision. Laser gyro random noise in mainly includes: gaussian noise,fractal noise. Through wavelet real-time filtering attempt to efficiently filtered gaussian noise and fractalnoise, thus improving the laser gyro output signal signal-to-noise ratio.At present the actual practical firm frequency control mode limited to a single proportional control,through the fuzzy adaptive PID control method can improve overall system robust stability frequency,reduce the occurrence of self-excited concussion situation.In actual application of laser gyro exist change with the environment, service and appear opticalsignal prolonged greatly changing circumstances. Relying on digital potentiometer realize automaticgain function, eliminated stationary potentiometer, can greatly improve the environment adaptabilityand trouble-free service time.Rely on in view of the above research, the authors form integrate DSP real-time filtering, fuzzy PIDcontroller and digital potentiometer automatic gain model, for the next step into the road engineeringprovides a feasible.