空间冗余执行并行机制中的反向动力学公式的比较,受两个点接触高动力学对的约束
Chen Cheng1, Xiaojing Yuan1, Yenan Li1
1Laboratory of Mechatronics, Xi'an College of Technology, Xi'an 710025, China.
Biomimetics (Basel, Switzerland)
|September 27, 2024
概括
这项研究模拟了一个空间冗余激活并行机制 (RAPM),灵感来自人类的. 不同的动态建模方法揭示了更高的动力学对 (HKP) 约束如何影响机制行为和计算效率.
科学领域:
- 机器人和生物力学
- 机械工程 机械工程
- 运动学和动力学.
背景情况:
- 设计了一种新的空间冗余激活并行机制 (RAPM),灵感来自人类的.
- 该机制的终端效应器模仿下,有六个动力链代表肌和关节作为更高的动力对 (HKP) 约束.
研究的目的:
- 描述设计RAPM的受约束运动.
- 使用多种建模方法探索RAPM的刚体逆动力学.
- 为了比较由此产生的动态模型,并分析HKP约束的影响.
主要方法:
- 使用牛顿-欧勒定律,拉格朗日方程和虚拟工作原理,制定了五种动态模型.
- 分析了RAPM的逆动力学,考虑了来自HKPs的约束力和球形关节的反应力.
- 对不同模型的计算成本进行了比较,包括使用非冗余执行对应器的动态模型的模型.
主要成果:
- 牛顿-欧勒模型准确地表示来自HKPs的约束力,显示反应力对动力链数的依赖性.
- 拉格朗奇和虚拟工作模型忽略了约束和反应力,从而减少了方程和未知数.
- 基于非冗余执行对应的模型显示,计算成本显著降低 (16.7%和36.63%).
结论:
- 选择动态建模方法显著影响最终的模型结构和约束力表示.
- 在RAPM中的HKP约束引入复杂性并改变与非冗余执行机制相比的模型结构.
- 该研究强调了模型忠实性,计算效率和明确包含约束力之间的权衡.
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