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The New Calculation Method of Dynamic Feature of Gyro Motor ball bearing on agricultural machinery

The New Calculation Method of Dynamic Feature of Gyro Motor ...

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亚洲精细农业与计算机农业应用联合大会

作者： HUANG Qingxue 1 ZHAO Chunjiang 1 2 GE Shidong 3 1Department of material science and engineering Taiyuan University of Science and Tecchnology Taiyuan 030024 China 2College of Mechnaical Science and Engineering Jilin university Changchun 130022 China 3bearing research institute of Luoyang Luoyang 471039 China

The micromechanical gyroscope is the important seneor on agricultural machinery for course angle testing,and course angle is the key parameter for navigation positioning *** agricultural machinery on-stream is working under mal-cindition, so most of high degree accuracy fibre potic gyroscope not noly get bad Kalman filtering result under thrashing, vibration and temperature drift but also are expensive. The micromechanical gyroscope is extensively used in agricultural machinery navigation system because of its operating stationarity and bargain *** orientation performance of gyroscope is depend on the revolution stationarity and vibration of gyro motor,the anlysis and control of the revolution stationarity and vibration is based on the calculation of high-speed dynamic feature of gyro motor ball *** current calculation methods mostly use quasi statics method or quasi dynamics method .The quasi statics method based on the raceway control theory is not exact because of ingoring lubrication, so the error between inner and outer raceway control parameter is inevitable in the equilibriation equation of frictional force and gyro moment on rolling *** quasi dynamics method is not noly not fit for the feature of holder-oily lubrication but also complex. In this paper,based on the analysis of conventional calculation method about the dynamic character of high-speed rolling ball bearing , a new calculation method is put forward which simplifies the rolling ball under load at 3 direction into two hinge short bar according to the change features of the contact angle under high speed and the deformation of rolling ball and raceway. The specific form of stiffness matrix is given and the solving process by setting initial value of the load at three direction is discussesd. The complexity because of the variable coupling in the conventional Newton-Raphson method is avoid , and the congervence property is improved by this method, and the calculation forma

关键词： agricultural machinery guidance gyroscope, ball bearing dynamic feature, Calculation met hod

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