• CN:11-2187/TH
  • ISSN:0577-6686

›› 1991, Vol. 27 ›› Issue (4): 1-15.

• 论文 •    下一篇

扫码分享

关于任意机械系统动力学方程的结构

杨廷力;李惠良;罗玉峰   

  1. 金陵石油化工公司;东南大学;北京航空航天大学
  • 发布日期:1991-07-01

GENERALIZED DYNAMICAL EQUATIONS FOR ARBITRATY MULTI-RIGID-LINK PLANAR MECHANICAL SYSTEMS

Yang Tingli;Luo Yufeng;Li Huiliang   

  1. Manjing Jinling Petrochemical Corp. Beijing University of Aeronautics and Astronautics Southeast University
  • Published:1991-07-01

摘要: 本文给出了任意机械系统(完整、非完整的约束,含有各类运动副的开、闭或混合链系统)动力学显式方程。其中,含约束反力的动力学显式方程乃是Newton-Euler方法与动力学普遍方程(虚功原理)的统一形式;提出了动力学等效分解模型,在一定意义上将系统动力学方程试为若班干子系统在特定运动输入下的运动学关系的某种叠加与组合;给出了动力学方程生成的计算量与系统结构单元的划分层次及其拓扑结构特征之间的关系。从而进一步提示了系统动力学、运动学与结构学之间的内在联系。

关键词: 动力学, 机械系统, 拓扑, 1范数正则项, 递归储备池, 卡尔曼滤波, 模型辨识, 水面无人船

Abstract: This paper deals with formulation of dynamic equations for multi-rigid-link multi-degree-of-freedom planar mechanical system, holonomic and linear nonholonomic, in arbitrary topological configuration (open-, close- or hybrid-chains). A new dynamic equation with reaction forces and moments of joints which is a simple and unified equation for vectorical and analytical mechanics is presented. These equations are expressed in matrix form. It brings up a dynamical model of overlapping sub-kinematic-chains so that using velocity and accelaration analysis of the system with specifying certain motion inputs, the equivalent dynamic decomposition of the system can be carried out. Amount of computer operations for automatic generation of dynamic equationg briefly depends on kinds of structural units (such as: link-joint, tree-cotree, and singe-opened-chain, etc.) and topological characteristics of a system. After comparing them, the approach by means of order-single-opened chain[18] is better. Esp. It can be carried out directly for untree shaped system without cutting any joint or body.

Key words: 动力学, 机械系统, 拓扑, 1-norm regularization, Incremental echo state network, Kalman filter, model identification, Unmanned surface vehicle