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| The Adaptive Estimating Method and Simulation Used for The Vibration Frequency of The System of Missile |
| ZHANG Heng,RUI Xiao-ting,YANG Fu-feng,CHEN Gang-li |
| Institute of Launch Dynamics, Nanjing University of Science & Technology,Nanjing 210094, Jiangsu,China |
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Abstract To improve the output accuracy of inertial measurement unit which is in compound dynamic environment of missile which has a high acceleration, strong impact and high vibration, a cascade of second-order adaptive notch filters is designed to estimate the elastic vibration frequency of the missile. The filter use the recursive least square method which has a forgetting factor to optimize the parameters of each notch filter real-time, and it has the characteristics of low computational complexity, fast convergence speed. Results of simulation and experiment show that this method has a good frequency estimation effect for the vibration signals of missile which is in in compound dynamic environment, and it has a strong anti- noise ability, and be suitable for the real-time calculation of missile computer.
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Received: 01 April 2016
Published: 15 May 2017
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