Nonlinear flexure coupling elements for precision control of multibody systems
Nonlinear flexure coupling elements for precision control of multibody systems
复制标题
用于多体系统精确控制的非线性挠性耦合元件
DOI:
10.1098/rspa.2018.0395
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Bailey N
中科院分区:
文献类型:
--
作者:
Bailey N
Conventional multibody systems used in robotics and automated machinery contain bearing components that exhibit complex and uncertain tribological characteristics. These limit fundamentally the precision of the automated motion and also cause wear. Replacing traditional bearing joints with flexure couplings eliminates these tribological effects, together with wear, reducing necessary system maintenance and offering a potential for increased motion precision. A flexure-coupled multibody system is considered and a novel general solution technique is presented. Derivation of a large deflection flexure coupling model is provided and subsequently validated using an experimental facility. A focused study of a unique double-flexure-coupling rigid body system is given; the formulated nonlinear mathematical model can be used for feedforward control. Equivalent control is also applied to a corresponding system with traditional bearing joints. The feasibility of replacing bearing joints by flexure couplings is demonstrated in terms of accurate large displacement control and reduction of high-frequency disturbances.
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