光纤陀螺寻北仪原理及其应用

陀螺寻北仪作为一种定北装置,在军事和民用定向中应用愈来愈多。此文介绍了一种新型陀螺寻北仪——光纤陀螺仪。在对光纤陀螺仪作了简单介绍的基础上,阐述了光纤陀螺寻北仪的原理及其应用。     

Analysis of mathematical model for micromechanical vibratory wheel gyroscope

By the sketch of structure of MVWG,the working laws of this kind of gyroscope were explained. To the aid of Euler‘‘s Dynamics Equation,a mathematical model of the gyroscope was constructed, and then by the basic working laws of MVWG the model was simplified. Under the conditions of the three axial direction rotations and general rotation, the mathematical model was resolved. And finally by the solutions, the working laws of the gyroscope, the working disparity among all sorts of gyrations and the influences from the gyrations in the axial directions were analysed.     

动力调谐陀螺仪数字化全状态伺服回路设计

动力调谐陀螺仪伺服系统在捷联系统中有着广泛的应用,传统的伺服回路只能实现陀螺仪在正常工作状态下的力平衡,而在静止和启停过程中陀螺转子处于自由状态,从而影响动力调谐陀螺仪的性能和使用寿命,并限制了其应用领域.根据动力调谐陀螺仪伺服技术的相关理论以及多变量自适应数字控制技术,设计动力调谐陀螺仪数字化全状态伺服回路的总体方案和控制算法.仿真和试验表明设计是正确的.     

自动泊车系统的智能化发展

自动泊车系统概述随着科技的不断进步,汽车逐渐向智能化发展,声音提示及影像已经满足不了安全泊车的需求,更具智能化的自动泊车系统(Automatic Parking System)应运而生。由于欧洲汽车制造业发展最早,汽车工业发展迅速,汽车保有量大幅提升,引发停车位紧张,从而导致了泊车难等问题,所以欧洲早在上个世纪八九十年代就开始了自动泊车方面的研究。此后,美、日等国的大量研究人员开始关注自     

周视跟瞄中瞄准线的陀螺稳定

本文运用陀螺特性与光学原理相结合的方法，介绍一种周视跟瞄系统中对瞄睢反射镜进行稳定的陀螺装置，并较详细地分析限控制回路中主回路、补偿回路和辅助回路及其设计试验参数。     

双平衡环挠性陀螺接头疲劳寿命的可靠性预计

本文以一种双平衡环挠性陀螺接头为结构模型,运用可靠性方法对挠性接头的疲劳寿命进行了分析,提出了一种预计挠性接头对于无限寿命的可靠度的方法。     

Capacitance Sensing and Software-Realized Lock-in Amplifier for the Electromagnetically Levitated Micro Gyroscope

In the novel prototype of micro-gyroscope structure,the new configured capacitance sensing scheme for the micro gyroscope was analyzed and the virtual instrument based detection scheme was implemented.The digital lock-in amplifier was employed in the capacitance detection to restrain the noise interference.The capacitance analysis shows that 1 fF capacitance variation corresponds to 0.1 degree of the turn angle.The differential capacitance bridge and the charge integral amplifier were used as the front signal input interface.In the implementation of digital lock-in amplifier,a new routine which warranted the exactly matching of the reference phase to signal phase was proposed.The result of the experiment shows that digital lock-in amplifier can greatly eliminate the noise in the output signal.The non linearity of the turn angle output is 2.3% and the minimum resolution of turn angle is 0.04 degrees.The application of the software demodulation in the signal detection of micro-electro-mechanical-system(MEMS)device is a new attempt,and it shows the prospective for a high-performance application.