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通过对曲柄群驱动机构平面内的惯性力与惯性力矩分析,建立了该机构动力优化平衡模型.以3个曲柄副的曲柄群机构为例,利用Matlab优化工具箱对具体优化模型进行了求解.结果表明,曲柄群驱动机构动力优化平衡方法能够大幅度降低机构的惯性力与惯性力矩,并且优化平衡时仅需要根据优化结果,在曲柄长度反方向的确定位置附加确定质量的平衡质量块即可,该方法具有较高的可操作性与实际应用价值,对该机构的快速平衡和推广应用具有一定指导意义. 相似文献
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连杆机构的平衡由来已久,1968年G·G·lowen对惯性力、惯性力矩和输入力矩的平衡方法已进行了全面的总结,对惯性力的完全平衡,归纳为五种方法,即质量替代法;主要点向量法;线性独立向量法;凸轮平衡法和对称机构平衡法。惯性力矩的完全平衡,归纳为三种方法,即凸轮平衡法;齿轮平衡法和对称机构平衡法。输入力矩的平衡则主要采用飞轮和弹簧。惯性力和惯性力矩的部分平衡,则主要用齿轮平衡重平衡其简谐波部分。本文仅就刚性平面连杆的平衡问题综述如下: 一、震动力的平衡 72年F·R·Tepper对“线性独立向量法”作了进一步的补充,一是应用回路原理证明了一个机构能否进行完全力平衡的条件;二是得出了可进行完全力平衡的一般n杆平面连杆机构的最少平衡重数量为n/2的结 相似文献
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以曲柄固定式斜盘发动机为研究对象,对其惯性力和惯性力矩进行了分析,得出结论:该型发动机完全可以实现自平衡,有利于提高发动机的运转平稳性、动力性和经济性. 相似文献
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阐述了惯性测量原理在轨道检测车中的应用,分析了常用捷联算法的优劣;介绍了四元数法的基本原理及其在捷联系统中的用法;给出了惯性测量系统的实用算法。 相似文献
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《Instrumentation》2015,(4)
The recent advances of atom interferometer and its application in precision inertial measurement are review ed. The principle,characteristics and implementation of atom interferometer are introduced and it can be used to measure gravitational acceleration,gravity gradient and rotation for its high sensitivity. We also present the principle,structure and new progress of gravimeter,gravity gradiometer and gyroscope based on atom interferometer. 相似文献
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Ryspek Usubamatov 《Journal of Mechanical Science and Technology》2018,32(1):101-108
Gyroscopic devices for navigation and control systems are widely applied in various industries, such as shipping and aerospace. A remarkable property of gyroscopes is that their axes can be maintained within a particular space. This interesting property of a spinning disc mounted on an axle is represented by a mathematical model formulated based on L. Euler’s principle of change in angular momentum. Nevertheless, numerous publications and analytical approaches in known gyroscope theories do not correspond to practical tests on gyroscopes. A simple rotating disc creates problems that do not have long-term solutions. Recent investigations in this area have demonstrated that the origin of gyroscope properties is more sophisticated than that described in known hypotheses. Researchers have not considered the action of inertial forces produced by the mass elements and center mass of the spinning rotor that create internal resistance and precession torques. Resistance torque is established through the actions of centrifugal and Coriolis forces. Precession torque is established through the actions of common inertial forces and a change in angular momentum. These internal torques act simultaneously and interdependently on two axes and represent the fundamental principles of gyroscope theory. Equations for internal inertial torques of a spinning disc have been formulated through mathematical analysis and differential and integral equations. These calculus methods provide a basis for understanding the rates of change in inertial forces acting on a gyroscope and include the use of functions, their derivatives, and integrals in modeling the physical processes in gyroscopes. This paper presents mathematical models for several internal inertial torques generated by the load torque acting on a spinning rotor. These models can describe all gyroscope properties and represent their novelty for machine dynamics and engineering. 相似文献
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微惯性测量器件的标定方法研究 总被引:1,自引:0,他引:1
在捷联惯性航向姿态测量系统中,微惯性器件是核心部分,陀螺和加速度计的精度直接影响整个系统的精度.详细给出了惯性测量器件的标定方法,利用软件来补偿器件的误差,从而改善系统性能. 相似文献