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arXiv 1402.5233cs.RO
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并联力/速度驱动系统动力学耦合项(μ)的研究

Study of the Dynamic Coupling Term (μ) in Parallel Force/Velocity Actuated Systems

University of Texas at Austin(德克萨斯大学奥斯汀分校)

Dinesh Rabindran, Delbert Tesar

摘要:

在本文中提出的是一个致动器的概念,称为并行力/速度致动器(PFVA),它结合了两个根本不同的致动器(一个使用低齿轮减速甚至直接驱动,我们将称为力致动器(FA)和其他与高减速齿轮训练,我们将称为速度致动器(VA))。这项工作的目的是评估这些输入之间的动态耦合的相对比例因子,RSF(齿轮减速比)的效果。提出了一种基于双输入单输出行星齿轮训练的并行力/速度驱动器。然后,我们提出了一个分析配方的动态耦合项w.r.t.的变化。无国界记者组织。通过一个1自由度四杆机构的算例说明了该公式的结论。它示出,无论是分析和数值,我们增加RSF,两个输入到PFVA解耦w.r.t.惯性力矩。这一认识可以作为PFVA的重要设计指南。本文还提出了本研究的两个局限性,并建议未来的工作,这些警告的基础上。

英文摘要:

Presented in this paper is an actuator concept, called a Parallel Force/Velocity Actuator (PFVA), that combines two fundamentally distinct actuators (one using low gear reduction or even direct drive, which we will call a Force Actuator (FA) and the other with a high reduction gear train that we will refer to as a Velocity Actuator (VA)). The objective of this work is to evaluate the effect of the relative scale factor, RSF, (ratio of gear reductions) between these inputs on their dynamic coupling. We conceptually describe a Parallel Force/Velocity Actuator (PFVA) based on a Dual-Input-Single- Output (DISO) epicyclic gear train. We then present an analytical formulation for the variation of the dynamic coupling term w.r.t. RSF. Conclusions from this formulation are illustrated through a numerical example involving a 1-DOF four-bar linkage. It is shown, both analytically and numerically, that as we increase the RSF, the two inputs to the PFVA are decoupled w.r.t. the inertia torques. This understanding can serve as an important design guideline for PFVAs. The paper also presents two limitations of this study and suggests future work based on these caveats.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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