振荡的间接控制:理论要素

Q3 Mathematics
V. Chernyshev, L. Savin, O. Fominova
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引用次数: 3

摘要

简要介绍了可控振动保护系统的主要研究领域。研究表明,具有间接控制过程的振动系统可以以最小的能量消耗来保证可编程的开关参数和结构,其中在主动冲击的基础上产生耗散恢复力和惯性力。在间接控制的综合中,得到了寻找弹性阻尼单元最优综合函数的新的辅助数学构造链。它可以将具有间歇阻尼的基本模型与具有脉冲陷阱的基本模型分离开来。研究结果表明,基于谐波平衡法,得到了具有间歇阻尼的基本模型的动力特性,确定了补偿效果参数和计算动力系数的计算公式。结果表明,采用最优的阻尼切换顺序可以消除谐振现象,且瞬态过程在运动扰动的一个周期内衰减。带脉冲陷阱的基本模型模拟了间歇性阻尼的极限变化,实现了约束键的叠加过程,约束键的顺序和持续时间是增加可控性的新变量。对于间接脉冲控制,存在一定的与振动保护效果无关的最小功耗。抑制耦合在低频区应用的持续时间的有规律的增加和在高频区应用的持续时间的减少,在整个频率范围内提供了对动态系数单调递减的依赖。考虑了隔振系统基本模型阻尼过程控制优化问题的一个求解实例。建立了间歇阻尼是隔振系统最优性不可缺少的特征:当物体的速度符号发生变化时,阻尼器打开,当物体的位移符号发生变化时,阻尼器关闭。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Indirect Control of Oscillations: Elements of Theory
A brief review of the main research areas in the field of controlled vibration protection systems is given. It is shown that Vibration systems with indirect control processes of oscillations allow with a minimum expenditure of energy to ensure programmable switching parameters and structures, in which the dissipative restoring and inertial forces generated on the basis of active impact. Within synthesis of indirect control the chains of new auxiliary mathematical constructs for finding optimal synthesizing functions of the elastic-damping units parameters control are obtained. It enabled to separate a base model with intermittent damping and base model with impulse trap. As a result of the study, based on the harmonic balance method, the dynamic properties of the basic model with intermittent damping, calculation formulas are obtained for determining the parameters of the compensation effect and calculating the dynamic coefficient. It is established that, with an optimal sequence of damping switching, the resonant phenomena are eliminated, and the transient processes decay within one period of the kinematic perturbation. The basic model with a pulse trap imitates the limiting variant of intermittent damping and realizes the process of superimposing constraining bonds, the sequence and duration of which are new variables essentially increasing controllability. And for indirect pulse control, there exicts a certain minimum of power consumption independent of the achieved effect of vibration protection. A regulated increase in the duration of the application of the restraining coupling in the low-frequency region and a decrease in this duration in the high-frequency region provides a monotonically decreasing dependence on the dynamic coefficients over the entire frequency range. An example of a solution to the optimization problem of controlling the damping process for a basic model of a vibration isolation system is considered. It is established that intermittent damping is an indispensable feature of the optimality of the vibration isolation system: the damper switches on when the sign of the object's speed has changed and turns off when the object's displacement sign has changed.
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来源期刊
SPIIRAS Proceedings
SPIIRAS Proceedings Mathematics-Applied Mathematics
CiteScore
1.90
自引率
0.00%
发文量
0
审稿时长
14 weeks
期刊介绍: The SPIIRAS Proceedings journal publishes scientific, scientific-educational, scientific-popular papers relating to computer science, automation, applied mathematics, interdisciplinary research, as well as information technology, the theoretical foundations of computer science (such as mathematical and related to other scientific disciplines), information security and information protection, decision making and artificial intelligence, mathematical modeling, informatization.
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